- Users - oVirt List Archives

Replicated Glusterfs on top of ZFS
by Arman Khalatyan 07 Mar '17

07 Mar '17

Hi, I use 3 nodes with zfs and glusterfs. Are there any suggestions to optimize it? host zfs config 4TB-HDD+250GB-SSD: [root@clei22 ~]# zpool status pool: zclei22 state: ONLINE scan: scrub repaired 0 in 0h0m with 0 errors on Tue Feb 28 14:16:07 2017 config: NAME STATE READ WRITE CKSUM zclei22 ONLINE 0 0 0 HGST_HUS724040ALA640_PN2334PBJ4SV6T1 ONLINE 0 0 0 logs lv_slog ONLINE 0 0 0 cache lv_cache ONLINE 0 0 0 errors: No known data errors Name: GluReplica Volume ID: ee686dfe-203a-4caa-a691-26353460cc48 Volume Type: Replicate (Arbiter) Replica Count: 2 + 1 Number of Bricks: 3 Transport Types: TCP, RDMA Maximum no of snapshots: 256 Capacity: 3.51 TiB total, 190.56 GiB used, 3.33 TiB free

6 16

Re: [ovirt-users] Storage balancer project
by nicolas＠devels.es 07 Mar '17

07 Mar '17

Hi, I added the LICENCE file [1] to the project. Regards. [1]: https://github.com/nkovacne/ovirt-storage-balancer/blob/master/LICENCE El 2017-03-07 06:36, Yaniv Kaul escribió: > On Mon, Mar 6, 2017, 10:18 PM <nicolas(a)devels.es> wrote: > >> Hi, >> >> I implemented a storage domain balancer [1], i.e. a script that >> tries to >> keep all storage domains under a defined threshold. We use our >> oVirt >> infrastructure for teaching so have several hundreds of users and >> cca. >> 800 VMs at this time, so something like this is really needed >> considering that when students create their VMs they tend to create >> their disks under the same storage domain (normally the first >> available >> one). This results in one or two heavily used SDs and the rest >> underused. >> >> I tried to keep it as simple as possible and doesn't have many >> features, >> but it seems to work (I tried it under our conditions: About 10 >> SDs, >> relatively highly used). If someone want to improve something on >> it, >> pull requests are welcome. >> >> Might also be an inspiration on [2]. >> >> Regards. >> >> [1]: https://github.com/nkovacne/ovirt-storage-balancer [1] > > Can you clarify the license? > Y. > >> [2]: https://bugzilla.redhat.com/show_bug.cgi?id=1331544 [2] >> _______________________________________________ >> Users mailing list >> Users(a)ovirt.org >> http://lists.ovirt.org/mailman/listinfo/users [3] > > > Links: > ------ > [1] https://github.com/nkovacne/ovirt-storage-balancer > [2] https://bugzilla.redhat.com/show_bug.cgi?id=1331544 > [3] http://lists.ovirt.org/mailman/listinfo/users

1 0

Storage balancer project
by nicolas＠devels.es 06 Mar '17

06 Mar '17

Hi, I implemented a storage domain balancer [1], i.e. a script that tries to keep all storage domains under a defined threshold. We use our oVirt infrastructure for teaching so have several hundreds of users and cca. 800 VMs at this time, so something like this is really needed considering that when students create their VMs they tend to create their disks under the same storage domain (normally the first available one). This results in one or two heavily used SDs and the rest underused. I tried to keep it as simple as possible and doesn't have many features, but it seems to work (I tried it under our conditions: About 10 SDs, relatively highly used). If someone want to improve something on it, pull requests are welcome. Might also be an inspiration on [2]. Regards. [1]: https://github.com/nkovacne/ovirt-storage-balancer [2]: https://bugzilla.redhat.com/show_bug.cgi?id=1331544

1 0

[ANN] oVirt 4.1.1 First Release Candidate
by Sandro Bonazzola 06 Mar '17

06 Mar '17

The oVirt Project is pleased to announce the availability of the First Release Candidate of oVirt 4.1.1 for testing, as of March 3rd, 2017 This is pre-release software. Please take a look at our community page[1] to know how to ask questions and interact with developers and users. All issues or bugs should be reported via oVirt Bugzilla[2]. This pre-release should not to be used in production. This update is the first release candidate of the first in a series of stabilization updates to the 4.1 series. 4.1.1 brings 26 enhancements and more than 350 bugfixes, including more than 130 high or urgent severity fixes, on top of oVirt 4.1 series This release is available now for: * Fedora 24 (tech preview) * Red Hat Enterprise Linux 7.3 or later * CentOS Linux (or similar) 7.3 or later This release supports Hypervisor Hosts running: * Red Hat Enterprise Linux 7.3 or later * CentOS Linux (or similar) 7.3 or later * Fedora 24 (tech preview) See the release notes draft [3] for installation / upgrade instructions and a list of new features and bugs fixed. Notes: - oVirt Live has been already built [4] - oVirt Node and Appliance has not been built for this release due to build issues we're still investigating. Additional Resources: * Read more about the oVirt 4.1.1 release highlights: http://www.ovirt.org/release/4.1.1/ * Get more oVirt Project updates on Twitter: https://twitter.com/ovirt * Check out the latest project news on the oVirt blog: http://www.ovirt.org/blog/ [1] https://www.ovirt.org/community/ [2] https://bugzilla.redhat.com/enter_bug.cgi?classification=oVirt [3] http://www.ovirt.org/release/4.1.1/ [4] http://resources.ovirt.org/pub/ovirt-4.1-pre/iso/ -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com

5 10

Re: [ovirt-users] [Gluster-users] Hot to force glusterfs to use RDMA?
by Arman Khalatyan 06 Mar '17

06 Mar '17

Dear Deepak, thank you for the hints, which gluster are you using? As you can see from my previous email that the RDMA connection tested with qperf. It is working as expected. In my case the clients are servers as well, they are hosts for the ovirt. Disabling selinux is nor recommended by ovirt, but i will give a try. Am 03.03.2017 7:50 vorm. schrieb "Deepak Naidu" <dnaidu(a)nvidia.com>: I have been testing glusterfs over RDMA & below is the command I use. Reading up the logs, it looks like your IB(InfiniBand) device is not being initialized. I am not sure if u have an issue on the client IB or the storage server IB. Also have you configured ur IB devices correctly. I am using IPoIB. Can you check your firewall, disable selinux, I think, you might have checked it already ? *mount -t glusterfs -o transport=rdma storageN1:/vol0 /mnt/vol0* · *The below error seems if you have issue starting your volume. I had issue, when my transport was set to tcp,rdma. I had to force start my volume. If I had set it only to tcp on the volume, the volume would start easily.* [2017-03-02 11:49:47.829391] E [MSGID: 114022] [client.c:2530:client_init_rpc] 0-GluReplica-client-2: failed to initialize RPC [2017-03-02 11:49:47.829413] E [MSGID: 101019] [xlator.c:433:xlator_init] 0-GluReplica-client-2: Initialization of volume 'GluReplica-client-2' failed, review your volfile again [2017-03-02 11:49:47.829425] E [MSGID: 101066] [graph.c:324:glusterfs_graph_init] 0-GluReplica-client-2: initializing translator failed [2017-03-02 11:49:47.829436] E [MSGID: 101176] [graph.c:673:glusterfs_graph_activate] 0-graph: init failed · *The below error seems if you have issue with IB device. If not configured properly.* [2017-03-02 11:49:47.828996] W [MSGID: 103071] [rdma.c:4589:__gf_rdma_ctx_create] 0-rpc-transport/rdma: rdma_cm event channel creation failed [No such device] [2017-03-02 11:49:47.829067] W [MSGID: 103055] [rdma.c:4896:init] 0-GluReplica-client-2: Failed to initialize IB Device [2017-03-02 11:49:47.829080] W [rpc-transport.c:354:rpc_transport_load] 0-rpc-transport: 'rdma' initialization failed -- Deepak *From:* gluster-users-bounces(a)gluster.org [mailto:gluster-users-bounces@ gluster.org] *On Behalf Of *Sahina Bose *Sent:* Thursday, March 02, 2017 10:26 PM *To:* Arman Khalatyan; gluster-users(a)gluster.org; Rafi Kavungal Chundattu Parambil *Cc:* users *Subject:* Re: [Gluster-users] [ovirt-users] Hot to force glusterfs to use RDMA? [Adding gluster users to help with error] [2017-03-02 11:49:47.828996] W [MSGID: 103071] [rdma.c:4589:__gf_rdma_ctx_create] 0-rpc-transport/rdma: rdma_cm event channel creation failed [No such device] On Thu, Mar 2, 2017 at 5:36 PM, Arman Khalatyan <arm2arm(a)gmail.com> wrote: BTW RDMA is working as expected: root@clei26 ~]# qperf clei22.vib tcp_bw tcp_lat tcp_bw: bw = 475 MB/sec tcp_lat: latency = 52.8 us [root@clei26 ~]# thank you beforehand. Arman. On Thu, Mar 2, 2017 at 12:54 PM, Arman Khalatyan <arm2arm(a)gmail.com> wrote: just for reference: gluster volume info Volume Name: GluReplica Type: Replicate Volume ID: ee686dfe-203a-4caa-a691-26353460cc48 Status: Started Snapshot Count: 0 Number of Bricks: 1 x (2 + 1) = 3 Transport-type: tcp,rdma Bricks: Brick1: 10.10.10.44:/zclei22/01/glu Brick2: 10.10.10.42:/zclei21/01/glu Brick3: 10.10.10.41:/zclei26/01/glu (arbiter) Options Reconfigured: network.ping-timeout: 30 server.allow-insecure: on storage.owner-gid: 36 storage.owner-uid: 36 cluster.data-self-heal-algorithm: full features.shard: on cluster.server-quorum-type: server cluster.quorum-type: auto network.remote-dio: enable cluster.eager-lock: enable performance.stat-prefetch: off performance.io-cache: off performance.read-ahead: off performance.quick-read: off performance.readdir-ahead: on nfs.disable: on [root@clei21 ~]# gluster volume status Status of volume: GluReplica Gluster process TCP Port RDMA Port Online Pid ------------------------------------------------------------ ------------------ Brick 10.10.10.44:/zclei22/01/glu 49158 49159 Y 15870 Brick 10.10.10.42:/zclei21/01/glu 49156 49157 Y 17473 Brick 10.10.10.41:/zclei26/01/glu 49153 49154 Y 18897 Self-heal Daemon on localhost N/A N/A Y 17502 Self-heal Daemon on 10.10.10.41 N/A N/A Y 13353 Self-heal Daemon on 10.10.10.44 N/A N/A Y 32745 Task Status of Volume GluReplica ------------------------------------------------------------ ------------------ There are no active volume tasks On Thu, Mar 2, 2017 at 12:52 PM, Arman Khalatyan <arm2arm(a)gmail.com> wrote: I am not able to mount with RDMA over cli.... Are there some volfile parameters needs to be tuned? /usr/bin/mount -t glusterfs -o backup-volfile-servers=10.10. 10.44:10.10.10.42:10.10.10.41,transport=rdma 10.10.10.44:/GluReplica /mnt [2017-03-02 11:49:47.795511] I [MSGID: 100030] [glusterfsd.c:2454:main] 0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.8.9 (args: /usr/sbin/glusterfs --volfile-server=10.10.10.44 --volfile-server=10.10.10.44 --volfile-server=10.10.10.42 --volfile-server=10.10.10.41 --volfile-server-transport=rdma --volfile-id=/GluReplica.rdma /mnt) [2017-03-02 11:49:47.812699] I [MSGID: 101190] [event-epoll.c:628:event_dispatch_epoll_worker] 0-epoll: Started thread with index 1 [2017-03-02 11:49:47.825210] I [MSGID: 101190] [event-epoll.c:628:event_dispatch_epoll_worker] 0-epoll: Started thread with index 2 [2017-03-02 11:49:47.828996] W [MSGID: 103071] [rdma.c:4589:__gf_rdma_ctx_create] 0-rpc-transport/rdma: rdma_cm event channel creation failed [No such device] [2017-03-02 11:49:47.829067] W [MSGID: 103055] [rdma.c:4896:init] 0-GluReplica-client-2: Failed to initialize IB Device [2017-03-02 11:49:47.829080] W [rpc-transport.c:354:rpc_transport_load] 0-rpc-transport: 'rdma' initialization failed [2017-03-02 11:49:47.829272] W [rpc-clnt.c:1070:rpc_clnt_connection_init] 0-GluReplica-client-2: loading of new rpc-transport failed [2017-03-02 11:49:47.829325] I [MSGID: 101053] [mem-pool.c:641:mem_pool_destroy] 0-GluReplica-client-2: size=588 max=0 total=0 [2017-03-02 11:49:47.829371] I [MSGID: 101053] [mem-pool.c:641:mem_pool_destroy] 0-GluReplica-client-2: size=124 max=0 total=0 [2017-03-02 11:49:47.829391] E [MSGID: 114022] [client.c:2530:client_init_rpc] 0-GluReplica-client-2: failed to initialize RPC [2017-03-02 11:49:47.829413] E [MSGID: 101019] [xlator.c:433:xlator_init] 0-GluReplica-client-2: Initialization of volume 'GluReplica-client-2' failed, review your volfile again [2017-03-02 11:49:47.829425] E [MSGID: 101066] [graph.c:324:glusterfs_graph_init] 0-GluReplica-client-2: initializing translator failed [2017-03-02 11:49:47.829436] E [MSGID: 101176] [graph.c:673:glusterfs_graph_activate] 0-graph: init failed [2017-03-02 11:49:47.830003] W [glusterfsd.c:1327:cleanup_and_exit] (-->/usr/sbin/glusterfs(mgmt_getspec_cbk+0x3c1) [0x7f524c9dbeb1] -->/usr/sbin/glusterfs(glusterfs_process_volfp+0x172) [0x7f524c9d65d2] -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x7f524c9d5b4b] ) 0-: received signum (1), shutting down [2017-03-02 11:49:47.830053] I [fuse-bridge.c:5794:fini] 0-fuse: Unmounting '/mnt'. [2017-03-02 11:49:47.831014] W [glusterfsd.c:1327:cleanup_and_exit] (-->/lib64/libpthread.so.0(+0x7dc5) [0x7f524b343dc5] -->/usr/sbin/glusterfs(glusterfs_sigwaiter+0xe5) [0x7f524c9d5cd5] -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x7f524c9d5b4b] ) 0-: received signum (15), shutting down [2017-03-02 11:49:47.831014] W [glusterfsd.c:1327:cleanup_and_exit] (-->/lib64/libpthread.so.0(+0x7dc5) [0x7f524b343dc5] -->/usr/sbin/glusterfs(glusterfs_sigwaiter+0xe5) [0x7f524c9d5cd5] -->/usr/sbin/glusterfs(cleanup_and_exit+0x6b) [0x7f524c9d5b4b] ) 0-: received signum (15), shutting down On Thu, Mar 2, 2017 at 12:11 PM, Sahina Bose <sabose(a)redhat.com> wrote: You will need to pass additional mount options while creating the storage domain (transport=rdma) Please let us know if this works. On Thu, Mar 2, 2017 at 2:42 PM, Arman Khalatyan <arm2arm(a)gmail.com> wrote: Hi, Are there way to force the connections over RDMA only? If I check host mounts I cannot see rdma mount option: mount -l| grep gluster 10.10.10.44:/GluReplica on /rhev/data-center/mnt/glusterSD/10.10.10.44:_GluReplica type fuse.glusterfs (rw,relatime,user_id=0,group_id=0,default_permissions, allow_other,max_read=131072) I have glusterized 3 nodes: GluReplica Volume ID: ee686dfe-203a-4caa-a691-26353460cc48 Volume Type: Replicate (Arbiter) Replica Count: 2 + 1 Number of Bricks: 3 Transport Types: TCP, RDMA Maximum no of snapshots: 256 Capacity: 3.51 TiB total, 190.56 GiB used, 3.33 TiB free _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users ------------------------------ This email message is for the sole use of the intended recipient(s) and may contain confidential information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply email and destroy all copies of the original message. ------------------------------

4 7

oVirt Nested Virtualization
by Luca 'remix_tj' Lorenzetto 06 Mar '17

06 Mar '17

Hello, we're installing a small ovirt cluster for hosting some test environments at work. We're interested in testing VM running hypervisors (i.e ovirt itself or a small openstack deployment). Is there any documentation showing how to enable nested virtualization in ovirt? I've seen that while adding an host to the cluster there is the opportunity to flag "Nested Virtualization" option, but i didn't understand if other packages and configs are required. Our environment is running latest ovirt 4.1 installed with ovirt-node-ng. Luca -- "E' assurdo impiegare gli uomini di intelligenza eccellente per fare calcoli che potrebbero essere affidati a chiunque se si usassero delle macchine" Gottfried Wilhelm von Leibnitz, Filosofo e Matematico (1646-1716) "Internet è la più grande biblioteca del mondo. Ma il problema è che i libri sono tutti sparsi sul pavimento" John Allen Paulos, Matematico (1945-vivente) Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca(a)gmail.com>

5 6

VM Permissions (3.6)
by Alexis HAUSER 06 Mar '17

06 Mar '17

------=_Part_2283923_195487747.1488714679596 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit hi, I'm trying to figure out how to manage VM permissions with ovirt. >From what I've understood, if you add a user to user role in the system preferences, this user can access every VM and resources on the cluster, with the associated permissions; right ? Now, if I want to control who has access to each VM : I musn't add this user to user role from the system tab; but instead add it on each resources (like on each VM) it should access ? Is there another way to manage permissions ? How you guys do personally manage this ? Do you automate it with scripts ? Thanks for you ideas and suggestions (using 3.6) ------=_Part_2283923_195487747.1488714679596 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit <html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div>hi, I'm trying to figure out how to manage VM permissions with ovirt.<br></div><div>From what I've understood, if you add a user to user role in the system preferences, this user can access every VM and resources on the cluster, with the associated permissions; right ?<br></div><div>Now, if I want to control who has access to each VM : I musn't add this user to user role from the system tab; but instead add it on each resources (like on each VM) it should access ?<br></div><div><br></div><div>Is there another way to manage permissions ? How you guys do personally manage this ? Do you automate it with scripts ?<br></div><div><br></div><div>Thanks for you ideas and suggestions<br></div><div><br></div><div>(using 3.6)<br></div></div></body></html> ------=_Part_2283923_195487747.1488714679596--

2 1

Ovirt importing VM
by rightkicktech.gmail.com 06 Mar '17

06 Mar '17

------SZR5TSRASD8ALPWG0P8ZQNHBNKKQYO Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi, I am using Virt4=2E1 on top glusterfs=2E I have defined two data domains, one for engine and one for vms=2E Also ex= port and iso domains are on separate dedicated gluster volumes=2E When I try to import a VM from the export domain the VM is imported in the= engine data domain=2E I would expect to be able to select on which data do= main to import it=2E Am I missing sth? Thanx, Alex --=20 Sent from my Android device with K-9 Mail=2E Please excuse my brevity=2E ------SZR5TSRASD8ALPWG0P8ZQNHBNKKQYO Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi,<br> <br> I am using Virt4=2E1 on top glusterfs=2E<br> I have defined two data domains, one for engine and one for vms=2E Also ex= port and iso domains are on separate dedicated gluster volumes=2E<br> <br> When I try to import a VM from the export domain the VM is imported in the= engine data domain=2E I would expect to be able to select on which data do= main to import it=2E Am I missing sth?<br> <br> Thanx,<br> Alex<br> <br> -- <br> Sent from my Android device with K-9 Mail=2E Please excuse my brevity=2E ------SZR5TSRASD8ALPWG0P8ZQNHBNKKQYO--

3 2

Re: [ovirt-users] lvscan on rhv host
by Nir Soffer 06 Mar '17

06 Mar '17

On Mon, Mar 6, 2017 at 1:03 AM, Marcin Kruk <askifyouneed(a)gmail.com> wrote: Please reply to the list, other users may find this discussion valuable. > 1. perfect and clear explanation > 2. Could you explain "These are probably OVF_STORE volumes, used to keep vms > ovs.", what is vms ovs, > and what valuable information is in te ovf file which you extracted? OVF is standard format for describing a VM: https://en.wikipedia.org/wiki/Open_Virtualization_Format All the VM that have a disk on a storage domain are stored in the OVF_STORE disks using OVF format, so you can restore all the VM from storage if you lost your engine database. Or, if you want to move entire storage domain from one setup to another, you can detach the storage domain from one setup, attach to the other setup, and import all the VMs. The OVF is also used by hosted engine to obtain engine vm setup from storage, and start the engine vm after a host is rebooted. > 3. perfect and clear > Thank you > > 2017-03-05 12:32 GMT+01:00 Nir Soffer <nsoffer(a)redhat.com>: >> >> On Sun, Mar 5, 2017 at 10:08 AM, Marcin Kruk <askifyouneed(a)gmail.com> >> wrote: >> > VDSM side, means RHV HOST side, right? >> > I missed LVM tags, so the command: >> > lvs -o vg_name,name,lv_tags is very helpful, thanks. >> > >> > 1. Is it a tool in command line to show: disk ID, alias, atached to >> > fields? >> >> No, you need to extract this info manually. >> >> Here is an example >> >> # lvs -o lv_name,size,attr,tags aed577ea-d1ca-4ebe-af80-f852c7ce59bb >> LV LSize Attr LV Tags >> 91799827-85b8-450d-a521-42de12fa08e6 1.00g -wi-ao---- >> >> IU_db343be2-f709-4835-b1c5-a1bbdb650b2a,MD_8,PU_93331705-46be-4cb8-9dc2-c1559843fd4a >> 93331705-46be-4cb8-9dc2-c1559843fd4a 3.00g -wi-ao---- >> >> IU_239d9e96-ad7d-4a7d-83af-d593877db11b,MD_7,PU_00000000-0000-0000-0000-000000000000 >> dfbf69fc-3371-42d4-8298-415a6ad4244a 128.00m -wi------- >> >> IU_7324cafc-905f-475e-8217-1a919bcca9e9,MD_5,PU_00000000-0000-0000-0000-000000000000 >> ea556b30-e62b-4d66-b832-459a5dd01890 128.00m -wi------- >> >> IU_aab45dbc-c016-4990-b834-ce455bbc4fef,MD_4,PU_00000000-0000-0000-0000-000000000000 >> ids 128.00m -wi-ao---- >> inbox 128.00m -wi-a----- >> leases 2.00g -wi-a----- >> master 1.00g -wi-ao---- >> metadata 512.00m -wi-a----- >> outbox 128.00m -wi-a----- >> xleases 1.00g -wi-a----- >> >> What is dfbf69fc-3371-42d4-8298-415a6ad4244a? >> >> MD_5 means this volume metadata is at offset 5 * 512 in >> 143dc2d0-8e1a-4b95-a306-2a26a7b4832f metadata >> >> # dd if=/dev/aed577ea-d1ca-4ebe-af80-f852c7ce59bb/metadata bs=512 count=1 >> skip=5 >> >> # dd if=/dev/aed577ea-d1ca-4ebe-af80-f852c7ce59bb/metadata bs=512 count=1 >> skip=5 >> DOMAIN=aed577ea-d1ca-4ebe-af80-f852c7ce59bb >> CTIME=1487525999 >> FORMAT=RAW >> DISKTYPE=2 >> LEGALITY=LEGAL >> SIZE=262144 >> VOLTYPE=LEAF >> DESCRIPTION={"Updated":true,"Size":30720,"Last Updated":"Fri Feb 24 >> 20:49:24 EST 2017","Storage >> Domains":[{"uuid":"aed577ea-d1ca-4ebe-af80-f852c7ce59bb"}],"Disk >> Description":"OVF_STORE"} >> IMAGE=7324cafc-905f-475e-8217-1a919bcca9e9 >> PUUID=00000000-0000-0000-0000-000000000000 >> MTIME=0 >> POOL_UUID= >> TYPE=PREALLOCATED >> GEN=0 >> EOF >> 1+0 records in >> 1+0 records out >> 512 bytes (512 B) copied, 0.00146441 s, 350 kB/s >> >> So this is OVF_STORE disk, see bellow >> >> > >> > 2. I found information about metadata, outbox etc volumes, >> > but I can not find info about lvm volumes with 128 MiB size. >> > Are these any metadata volumes? ex: from lvscan: >> > ACTIVE >> > >> > '/dev/b41214a0-4748-47a8-85f2-9ad1e573ab10/57e904c5-3267-4d94-a52c-babb06912d90' >> > [128.00 MiB] inherit' [128.00 MiB] inherit? >> >> These are probably OVF_STORE volumes, used to keep vms ovs. >> >> You can extract the data from these volumes like this: >> >> lvchange -ay >> aed577ea-d1ca-4ebe-af80-f852c7ce59bb/dfbf69fc-3371-42d4-8298-415a6ad4244a >> >> # tar tvf >> /dev/aed577ea-d1ca-4ebe-af80-f852c7ce59bb/dfbf69fc-3371-42d4-8298-415a6ad4244a >> -rw-r--r-- 0/0 138 2017-02-25 03:49 info.json >> -rw-r--r-- 0/0 11068 2017-02-25 03:49 >> 55e347d5-4074-4408-b782-c43011483845.ovf >> -rw-r--r-- 0/0 10306 2017-02-25 03:49 >> bcb03d22-0799-4b0e-bcb3-f69954e6f5eb.ovf >> >> # tar xvf >> /dev/aed577ea-d1ca-4ebe-af80-f852c7ce59bb/dfbf69fc-3371-42d4-8298-415a6ad4244a >> bcb03d22-0799-4b0e-bcb3-f69954e6f5eb.ovf >> bcb03d22-0799-4b0e-bcb3-f69954e6f5eb.ovf >> >> # dd if=bcb03d22-0799-4b0e-bcb3-f69954e6f5eb.ovf bs=512 count=1 >> <?xml version="1.0" encoding="UTF-8"?><ovf:Envelope >> xmlns:ovf="http://schemas.dmtf.org/ovf/envelope/1/" >> >> xmlns:rasd="http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_ResourceAllocationSet…" >> >> xmlns:vssd="http://schemas.dmtf.org/wbem/wscim/1/cim-schema/2/CIM_VirtualSystemSettingD…" >> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" >> ovf:version="4.1.0.0"><References><File >> >> ovf:href="239d9e96-ad7d-4a7d-83af-d593877db11b/93331705-46be-4cb8-9dc2-c1559843fd4a" >> ovf:id="93331705-46be-4cb8-9dc2-c15598431+0 records in >> 1+0 records out >> 512 bytes (512 B) copied, 8.0163e-05 s, 6.4 MB/s >> >> > >> > 3. Are they removed? When, for example, the virtual machine or disk will >> > be >> > deleted ? >> >> Yes, we create an lv when you create a disk or create snapshot, and remove >> them >> when you delete vm, disk, or snapshot. >> >> Nir > >

1 0

Ubuntu VM does not complete reboot cycle without Console Open
by Anantha Raghava 06 Mar '17

06 Mar '17

This is a multi-part message in MIME format. --------------A2448A45784238E495EAEAFE Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Hi, I have been observing that Ubuntu Precise VM, if restarted using a crontab at a given time, stops at the OS / Kernel Selection screen and does not complete the reboot. If we issue the reboot command with Console open, the same command works without any issues and the VM boots properly. This issue happens only with Ubuntu Precise and not with Trusty or Xeniel or even with any of Rehat distributions or CentOS. Interestingly, it doesn't happen with VMWare ESXi. I also read somewhere that this issue is with VDSM 3.6 and it seems to continue with VDSM 4 as well. Any suggestions in this regard. -- Thanks & Regards, Anantha Raghava eXzaTech Consulting And Services Pvt. Ltd. DISCLAIMER: This e-mail communication and any attachments may be privileged and confidential to eXza Technology Consulting & Services, and are intended only for the use of the recipients named above If you are not the addressee you may not copy, forward, disclose or use any part of it. If you have received this message in error, please delete it and all copies from your system and notify the sender immediately by return e-mail. Internet communications cannot be guaranteed to be timely, secure, error or virus-free. The sender does not accept liability for any errors or omissions. Do not print this e-mail unless required. Save Paper & trees. --------------A2448A45784238E495EAEAFE Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <body bgcolor="#FFFFFF" text="#000000"> <p><font face="Liberation Serif">Hi,</font></p> <p><font face="Liberation Serif">I have been observing that Ubuntu Precise VM, if restarted using a crontab at a given time, stops at the OS / Kernel Selection screen and does not complete the reboot. If we issue the reboot command with Console open, the same command works without any issues and the VM boots properly. This issue happens only with Ubuntu Precise and not with Trusty or Xeniel or even with any of Rehat distributions or CentOS.<br> </font></p> <p><font face="Liberation Serif">Interestingly, it doesn't happen with VMWare ESXi. <br> </font></p> <p><font face="Liberation Serif">I also read somewhere that this issue is with VDSM 3.6 and it seems to continue with VDSM 4 as well.</font></p> <p><font face="Liberation Serif">Any suggestions in this regard.</font><br> </p> -- <div class="moz-signature"> <p style="margin-bottom: 0cm; line-height: 100%"><font face="Times New Roman, serif">Thanks & Regards,</font></p> <p style="margin-bottom: 0cm; line-height: 100%"><br> </p> <address style="line-height: 100%"><font face="Times New Roman, serif">Anantha Raghava</font></address> <address style="line-height: 100%"><font face="Times New Roman, serif">eXzaTech Consulting And Services Pvt. Ltd.</font></address> <p style="margin-bottom: 0cm; line-height: 100%"><font color="#1f497d"><font face="Calibri, sans-serif"><font style="font-size: 7pt" size="1">DISCLAIMER:<br> This e-mail communication and any attachments may be privileged and confidential to eXza Technology Consulting & Services, and are intended only for the use of the recipients named above If you are not the addressee you may not copy, forward, disclose or use any part of it. If you have received this message in error, please delete it and all copies from your system and notify the sender immediately by return e-mail. Internet communications cannot be guaranteed to be timely, secure, error or virus-free. The sender does not accept liability for any errors or omissions. </font></font></font> </p> <p style="margin-bottom: 0cm; line-height: 100%"><br> </p> <p style="margin-bottom: 0cm; line-height: 100%"><font color="#66cc00"><font face="Times New Roman, serif">Do not print this e-mail unless required. Save Paper & trees.</font></font></p> </div> </body> </html> --------------A2448A45784238E495EAEAFE--

1 0

VM Permissions (3.6)
by Alexis HAUSER 06 Mar '17

06 Mar '17

------=_Part_2376072_2003072310.1488785909633 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit hi, I'm trying to figure out how to manage VM permissions with ovirt. >From what I've understood, if you add a user to user role in the system preferences, this user can access every VM and resources on the cluster, with the associated permissions; right ? Now, if I want to control who has access to each VM : I musn't add this user to user role from the system tab; but instead add it on each resources (like on each VM) it should access ? Is there another way to manage permissions ? How you guys do personally manage this ? Do you automate it with scripts ? Thanks for you ideas and suggestions (using 3.6) ------=_Part_2376072_2003072310.1488785909633 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><body><div style=3D"font-family: times new roman, new york, times, se= rif; font-size: 12pt; color: #000000"><div><div style=3D"font-family: times= new roman, new york, times, serif; font-size: 12pt; color: #000000;" data-= mce-style=3D"font-family: times new roman, new york, times, serif; font-siz= e: 12pt; color: #000000;"><div>hi, I'm trying to figure out how to manage V= M permissions with ovirt.</div><div>From what I've understood, if you add a= user to user role in the system preferences, this user can access every VM= and resources on the cluster, with the associated permissions; right ?</di= v><div>Now, if I want to control who has access to each VM : I musn't add t= his user to user role from the system tab; but instead add it on each resou= rces (like on each VM) it should access ?</div><div><br></div><div>Is there= another way to manage permissions ? How you guys do personally manage this= ? Do you automate it with scripts ?</div><div><br></div><div>Thanks for yo= u ideas and suggestions</div><div><br></div><div>(using 3.6)</div></div></d= iv><div><br></div><div><br></div></div></body></html> ------=_Part_2376072_2003072310.1488785909633--

1 0

VMs imported from libvirt have no cdrom device
by Chris Boot 05 Mar '17

05 Mar '17

Hi, I've imported a number of VMs that I previously was running under a self-hosted libvirt configuration. Most of the VMs at the source did not have a cdrom device (but some did) because I just added one as I needed to. Now that the VMs have been imported into oVirt, none of them have a cdrom device. Even booting with the "Attach CD" option doesn't create a cdrom device. I can't see any way to get oVirt to re-create the missing device. Is there a way for me to add these missing devices to my VMs? I'm running oVirt 4.1 on CentOS 7.3.1611 with a hosted engine setup. VMs were migrated from a Debian Stretch machine running libvirt 3.0.0 with qemu 2.8.0. Thanks, Chris -- Chris Boot bootc(a)bootc.net

2 2

Question about injecting ISO images workflow and network configuration
by wodel youchi 05 Mar '17

05 Mar '17

Hi, May be it's a silly question :-) , but how are gays configuring the storage network? Let me explain, if the management network and the storage network are not on the same subnet, if you wish to upload and ISO image on an NFS storage domain, you have to have a route between the two subnets, because the VM engine will try to mount the ISO domain locally to inject the file. PS : For iSCSI ISO domain, I don't know how it will be done, I didn't try it. My questions : - why not use the SPM server for that? - Is it safe to merge the management network with the storage network? - Is the best way to do it is to create a route between the the two subnets? Thanks in advance. Regards. <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> Garanti sans virus. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campai…> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

2 1

oVirt Hosted Engine Setup fails
by Manuel Luis Aznar 05 Mar '17

05 Mar '17

Hello there, I am having some trouble when deploying an oVirt 4.1 hosted engine installation. When I m just to end the installation and the hosted engine setup script is about to start the Vm engine (appliance) it fails saying "The VM is not powring up". If I double check the service vdsmd i get this error all the time: vdsm root ERROR failed to retrieve Hosted Engine HA info Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/host/api.py", line 231, in _getHaInfo stats = instance.get_all_stats() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/client/client.py", line 102, in get_all_stats with broker.connection(self._retries, self._wait): File "/usr/lib64/python2.7/contextlib.py", line 17, in __enter__ return self.gen.next() File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 99, in connection self.connect(retries, wait) File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 78, in connect raise BrokerConnectionError(error_msg) BrokerConnectionError: Failed to connect to broker, the number of errors has exceeded the limit (1) Did anyone have experimented the same problem?¿? Any hint on How to solved it?¿? I have tried several times with clean installations and always getting the same... The host where I am trying to do the installation have CentOS 7... Thanks for all in advance Will be waiting for any hint to see what I am doing wrong... Manuel Luis Aznar

2 3

Re: [ovirt-users] best way to remove SAN lun
by Pavel Gashev 05 Mar '17

05 Mar '17

Please also consider a case when a single iSCSI target has several LUNs and you remove one of them. In this case you should not logout. -----Original Message----- From: <users-bounces(a)ovirt.org> on behalf of Nelson Lameiras <nelson.lameiras(a)lyra-network.com> Date: Friday, 3 March 2017 at 20:55 To: Nir Soffer <nsoffer(a)redhat.com> Cc: users <users(a)ovirt.org> Subject: Re: [ovirt-users] best way to remove SAN lun Hello Nir, I think I was not clear in my explanations, let me try again : we have a oVirt 4.0.5.5 cluster with multiple hosts (centos 7.2). In this cluster, we added a SAN volume (iscsi) a few months ago directly in GUI Later we had to remove a DATA volume (SAN iscsi). Below the steps we have taken : 1- we migrated all disks outside the volume (oVirt) 2- we put volume on maintenance (oVirt) 3- we detach volume (oVirt) 4- we removed/destroyed volume (oVirt) In SAN : 5- we put it offline on SAN 6- we delete it from SAN We thought this would be enough, but later we has a serious incident when log partition went full (partially our fault) : /var/log/messages was continuously logging that it was still trying to reach the SAN volumes (we have since taken care of the issue of log space issue => more aggressive logrotate, etc) The real solution was to add two more steps, using shell in ALL hosts : 4a - logout from SAN : iscsiadm -m node --logout -T iqn.XXXXXXXX 4b - remove iscsi targets : rm -fr /var/lib/iscsi/nodes/iqn.XXXXXXXXX This effectively solved our problem, but was fastidious since we had to do it manually in all hosts (imagine if we had hundreds of hosts...) So my question was : shouldn't it be oVirt job to system "logout" and "remove iscsi targets" automatically when a volume is removed from oVirt ? maybe not, and I'm missing something? cordialement, regards, Nelson LAMEIRAS Ingénieur Systèmes et Réseaux / Systems and Networks engineer Tel: +33 5 32 09 09 70 nelson.lameiras(a)lyra-network.com www.lyra-network.com | www.payzen.eu Lyra Network, 109 rue de l'innovation, 31670 Labège, FRANCE ----- Original Message ----- From: "Nir Soffer" <nsoffer(a)redhat.com> To: "Nelson Lameiras" <nelson.lameiras(a)lyra-network.com> Cc: "Gianluca Cecchi" <gianluca.cecchi(a)gmail.com>, "Adam Litke" <alitke(a)redhat.com>, "users" <users(a)ovirt.org> Sent: Wednesday, February 22, 2017 8:27:26 AM Subject: Re: [ovirt-users] best way to remove SAN lun On Wed, Feb 22, 2017 at 9:03 AM, Nelson Lameiras <nelson.lameiras(a)lyra-network.com> wrote: > Hello, > > Not sure it is the same issue, but we have had a "major" issue recently in our production system when removing a ISCSI volume from oVirt, and then removing it from SAN. What version? OS version? The order must be: 1. remove the LUN from storage domain will be available in next 4.1 release. in older versions you have to remove the storage domain 2. unzone the LUN on the server 3. remove the multipath devices and the paths on the nodes > The issue being that each host was still trying to access regularly to the SAN volume in spite of not being completely removed from oVirt. What do you mean by "not being completely removed"? Who was accessing the volume? > This led to an massive increase of error logs, which filled completely /var/log partition, Which log was full with errors? > which snowballed into crashing vdsm and other nasty consequences. You should have big enough /var/log to avoid such issues. > > Anyway, the solution was to manually logout from SAN (in each host) with iscsiadm and manually remove iscsi targets (again in each host). It was not difficult once the problem was found because currently we only have 3 hosts in this cluster, but I'm wondering what would happen if we had hundreds of hosts ? > > Maybe I'm being naive but shouldn't this be "oVirt job" ? Is there a RFE still waiting to be included on this subject or should I write one ? We have RFE for this here: https://bugzilla.redhat.com/1310330 But you must understand that ovirt does not control your storage server, you are responsible to add devices on the storage server, and remove them. We are only consuming the devices. Even we we provide a way to remove devices on all hosts, you will have to remove the device on the storage server before removing it from hosts. If not, ovirt will find the removed devices again in the next scsi rescan, and we do lot of these to support automatic discovery of new devices or resized devices. Nir > > cordialement, regards, > > > Nelson LAMEIRAS > Ingénieur Systèmes et Réseaux / Systems and Networks engineer > Tel: +33 5 32 09 09 70 > nelson.lameiras(a)lyra-network.com > > www.lyra-network.com | www.payzen.eu > > > > > > Lyra Network, 109 rue de l'innovation, 31670 Labège, FRANCE > > ----- Original Message ----- > From: "Nir Soffer" <nsoffer(a)redhat.com> > To: "Gianluca Cecchi" <gianluca.cecchi(a)gmail.com>, "Adam Litke" <alitke(a)redhat.com> > Cc: "users" <users(a)ovirt.org> > Sent: Tuesday, February 21, 2017 6:32:18 PM > Subject: Re: [ovirt-users] best way to remove SAN lun > > On Tue, Feb 21, 2017 at 7:25 PM, Gianluca Cecchi > <gianluca.cecchi(a)gmail.com> wrote: >> On Tue, Feb 21, 2017 at 6:10 PM, Nir Soffer <nsoffer(a)redhat.com> wrote: >>> >>> This is caused by active lvs on the remove storage domains that were not >>> deactivated during the removal. This is a very old known issue. >>> >>> You have remove the remove device mapper entries - you can see the devices >>> using: >>> >>> dmsetup status >>> >>> Then you can remove the mapping using: >>> >>> dmsetup remove device-name >>> >>> Once you removed the stale lvs, you will be able to remove the multipath >>> device and the underlying paths, and lvm will not complain about read >>> errors. >>> >>> Nir >> >> >> OK Nir, thanks for advising. >> >> So what I run with success on the 2 hosts >> >> [root@ovmsrv05 vdsm]# for dev in $(dmsetup status | grep >> 900b1853--e192--4661--a0f9--7c7c396f6f49 | cut -d ":" -f 1) >> do >> dmsetup remove $dev >> done >> [root@ovmsrv05 vdsm]# >> >> and now I can run >> >> [root@ovmsrv05 vdsm]# multipath -f 3600a0b80002999020000cd3c5501458f >> [root@ovmsrv05 vdsm]# >> >> Also, with related names depending on host, >> >> previous maps to single devices were for example in ovmsrv05: >> >> 3600a0b80002999020000cd3c5501458f dm-4 IBM ,1814 FAStT >> size=2.0T features='2 pg_init_retries 50' hwhandler='1 rdac' wp=rw >> |-+- policy='service-time 0' prio=0 status=enabled >> | |- 0:0:0:2 sdb 8:16 failed undef running >> | `- 1:0:0:2 sdh 8:112 failed undef running >> `-+- policy='service-time 0' prio=0 status=enabled >> |- 0:0:1:2 sdg 8:96 failed undef running >> `- 1:0:1:2 sdn 8:208 failed undef running >> >> And removal of single path devices: >> >> [root@ovmsrv05 root]# for dev in sdb sdh sdg sdn >> do >> echo 1 > /sys/block/${dev}/device/delete >> done >> [root@ovmsrv05 vdsm]# >> >> All clean now... ;-) > > Great! > > I think we should have a script doing all these steps. > > Nir > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users

2 1

Re: [ovirt-users] rhevm listening on ipv6 ?
by Yevgeny Zaspitsky 05 Mar '17

05 Mar '17

Šimon, According to [1] oVirt should be accessible through IPv6 address. >From my experience engine web&rest can be accessed by using an URL with an IPv6 address in a browser. Please notice that an IPv6 literal address (not a hostname that resolves to an IPv6 address) in a valid URL should be wrapped by brackets, e.g. http:// [1::2]:80/path. You can verify that the engine listens to an IPv6 by running the following command from the Linux console of the host that runs ovirt-engine (while ovirt-engine service runs): netstat -lnp6 | grep <port> where <port> is the port ovirt-engine should be listening to and be accessed through (default is 80). It seems to me like a problem on ManageIQ side. Please let me know if you need further assistance. Regards, Yevgeny [1] https://bugzilla.redhat.com/show_bug.cgi?id=1310837 On Fri, Mar 3, 2017 at 4:55 PM, Šimon <simi(a)mykolab.com> wrote: > Hello Yevgeny, > > I am working on ipv6-only support for ManageIQ. And I have noticed that > providers QA has around listen on ipv4 only. > > Is it possible for rhevm web/api to listen on ipv6? What are the steps I > need to do? > > Thanks a lot! > ~š. >

1 0

test
by Doron Fe 05 Mar '17

05 Mar '17

1 0

test- please ignore
by Doron Fediuck 05 Mar '17

05 Mar '17

1 0

Contributing on ovirt
by shubham dubey 05 Mar '17

05 Mar '17

Hello, I am interested in being part of ovirt for gsoc 2017. I have looked into ovirt project ideas and the project that I find most suitable is Configuring the backup storage in ovirt. Since the ovirt online docs have sufficient info for getting started for development so I don't have a questions about that but I want to clarify one doubt that did the previous year mentioned project on ovirt gsoc page are also available to work on? I will also appreciate any discussion about the project or question from mentor side.Even some guideline for start working is welcome. Thanks, Shubham

2 1

failed to migrate Vm
by Bill James 05 Mar '17

05 Mar '17

I have a hardware node that for whatever reason most of the VM status was "?", even though VM was up and running fine. node was running ovirt 3.6 so I decided to upgrade it to 4.1.0.4-1 like most of the rest of the cluster is, including engine. After upgrade some VMs I'm able to start up fine on the upgraded hosts, other fail to start on that host and migrate themselves to another host. If I try to manually migrate them to the recently upgraded host migration fails. I have yet to find in the logs where it says why they fail. I am able to "runonce" the VM and tell it to start on this host and it starts fine. Why is migration failing? ovirt-engine-4.1.0.4-1.el7.centos.noarch vdsm-4.19.4-1.el7.centos.x86_64 2017-03-04 10:16:51,716-08 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (org.ovirt.thread.pool-7-thread-48) [519095c3-83ed-4478-8dd4-f432db6db140] EVENT_ID: VM_MIGRATION_TO_SERVER_FAILED(120), Correlation ID: 2 6d1ecba-8711-408d-b9d5-6461a4aab4e5, Job ID: 546e0e11-9b4b-48d4-bd50-2f525d049ae2, Call Stack: null, Custom Event ID: -1, Message: Migration failed (VM: *j2es2.test.j2noc.com*, Source: ovirt6.test.j2noc.com, Destination: *ovirt4.test.j2noc.com*) (engine.log attached) Thanks.

2 1

lvscan on rhv host
by Marcin Kruk 05 Mar '17

05 Mar '17

Could somebody give me a links to doc or explain behavior of lv volumes in RHV 4 cluster, once they are active another time they are incative, and how to corelate the lv volumes names with disks of virtual machines, or other disks?

2 1

Staring cluster Hosted Engine stuck - failed liveliness check
by Maton, Brett 04 Mar '17

04 Mar '17

What is the correct way to shut down a cluster ? I shutdown my 4.1 cluster following this guide https://github.com/rharmonson/richtech/wiki/OSVDC-Series:- oVirt-3.6-Cluster-Shutdown-and-Startup as the NAS hosting the nfs mounts needed rebooting after updates. ( I realise the guide is for 3.6, surely not that different ? ) However hosted engine isn't starting now. failed liveliness check I've tried connecting from the host starting the HE vm to see what's going on with: virsh console HostedEngine I don't know what authentication it requires, tried engine admin details and root os... hosted-engine --add-console-password Enter password: no graphics devices configured unsurprisingly, remote-viewer vnc://localhost:5900 fails with Unable to connect to the graphic server vnc://localhost:5900 What can I do next ?

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best way to remove SAN lun
by Gianluca Cecchi 03 Mar '17

03 Mar '17

Hello, currently I have a cluster of 3 hosts where each one has FC SAN connectivity to 4 LUNs: 3 are already configured as storage domains (1TB, 2TB, 4TB), one is free, not allocated. See here for screenshot: https://drive.google.com/file/d/0BwoPbcrMv8mvRVZZMTlNcTQ5MGs/view?usp=shari… At the moment the command "multipath -l" run on hosts shows all the 4 LUNs. Now I want to do 2 things at storage array level: - remove the 2TB storage domain LUN - remove the 20Gb LUN not yet allocated What is the correct workflow, supposing I have already emptied the 2TB from VM disks ad such? Select 2Tb SD, then Datacenter subtab, then "maintenance", detach" and at the end "remove"? I think I continue to see 4 LUNs at this point, correct? Now I proceed with removal of lun at storage array level? Should I select an SD line and then "Scan disks" to see refresh the SAN and see in multipath only 2 of them at the end? Or any manual command at host level before removal from array? Thanks in advance Gianluca

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Hot to force glusterfs to use RDMA?
by Arman Khalatyan 03 Mar '17

03 Mar '17

Hi, Are there way to force the connections over RDMA only? If I check host mounts I cannot see rdma mount option: mount -l| grep gluster 10.10.10.44:/GluReplica on /rhev/data-center/mnt/glusterSD/10.10.10.44:_GluReplica type fuse.glusterfs (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,max_read=131072) I have glusterized 3 nodes: GluReplica Volume ID: ee686dfe-203a-4caa-a691-26353460cc48 Volume Type: Replicate (Arbiter) Replica Count: 2 + 1 Number of Bricks: 3 Transport Types: TCP, RDMA Maximum no of snapshots: 256 Capacity: 3.51 TiB total, 190.56 GiB used, 3.33 TiB free

4 7

Unsupported Cluster with oVirt question
by m m 03 Mar '17

03 Mar '17

Hi, I have two questions about an oVirt setup. I have 3 nodes connected to a SAN storage via FC and all VMs are kept in this SAN. From the SAN I have mounted two partitions to each of these nodes and these partitions are in an OCFS2 cluster setup. I am planning to export these partitions and create NFS Domain storage in oVirt. Is there any better way considering this setup? my second question is, in the event that one of the nodes is failing, is there thing I can do to prevent VMs running on that failing node not to fail? Regards

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