November 2017 - Users - oVirt List Archives

Cannot remove snapshot
by Nicolas Ecarnot 21 Nov '17

21 Nov '17

Hello, oVirt 3.6.7.5-1 I'm trying to remove a snapshot in a cold way (VM shut down). It is failing, and VDSM is telling : 4f1588f3-ae2d-4702-b7e1-4ef53b5b5a1d::DEBUG::2017-11-17 13:04:11,448::lvm::290::Storage.Misc.excCmd::(cmd) SUCCESS: <err> = ' WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!\n'; <rc> = 0 4f1588f3-ae2d-4702-b7e1-4ef53b5b5a1d::DEBUG::2017-11-17 13:04:11,456::lvm::462::Storage.LVM::(_reloadlvs) lvs reloaded 4f1588f3-ae2d-4702-b7e1-4ef53b5b5a1d::DEBUG::2017-11-17 13:04:11,456::lvm::462::Storage.OperationMutex::(_reloadlvs) Operation 'lvm reload operation' released the operation mutex 4f1588f3-ae2d-4702-b7e1-4ef53b5b5a1d::ERROR::2017-11-17 13:04:11,457::image::1302::Storage.Image::(merge) Unexpected error Traceback (most recent call last): File "/usr/share/vdsm/storage/image.py", line 1293, in merge sdDom, srcVolParams, volParams, reqSize, chain) File "/usr/share/vdsm/storage/image.py", line 1039, in _baseCowVolumeMerge unsafe=False, rollback=True) File "/usr/share/vdsm/storage/volume.py", line 278, in rebase raise se.MergeSnapshotsError(self.volUUID) MergeSnapshotsError: Error merging snapshots: ('4a8c17aa-5882-45a1-8a6e-40db39ed06ca',) I read this : https://bugzilla.redhat.com/show_bug.cgi?id=1069610 , hoping I could find some workaround. But I couldn't. If there is no abvious workaround, would there be other ways like : - find the bare logical volume, shut down the VM, and play with low level qemu-img commands. I think I knwn how to do that, but I'm worried the oVirt database won't be in sync once I've removed the snapshot or - export the VM then re-import, if this is related to some LV space missing. Then removing the snapshot the usual way. Any advice (apart the obvious upgrade-to-4.X-sir)? -- Nicolas ECARNOT

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Host Non Operational - Filed to configure management network on host Vollansicht Vollansicht
by jean.hort＠web.de 21 Nov '17

21 Nov '17

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Host Non Operational - Filed to configure management network on host Vollansicht
by jean.hort＠web.de 21 Nov '17

21 Nov '17

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oVirt 4.1.7: Duplicate MAC addresses had to be introduced into mac pool violating no duplicates setting.
by nicolas＠devels.es 20 Nov '17

20 Nov '17

Hi, We just upgraded from 4.1.6 to 4.1.7 and just after the engine was brought back the following event showed up: Duplicate MAC addresses had to be introduced into mac pool violating no duplicates setting. Can someone explain why is that? Thanks. Nicolás

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Re: [ovirt-users] Some tests results: lustrefs over nfs on VM
by Arman Khalatyan 19 Nov '17

19 Nov '17

hi Yaniv, yes for sure I hit some cache in between but not the vm cache, it has a 4GB ram, with oflag=direct I get about 120MB/s for the data analysis the cache is our friend:) The backend is a lustrefs 2.10.x. yes we have dedicated 10G on the hosts, where we can limit the vm interface to 10Gbit? Am 19.11.2017 8:33 nachm. schrieb "Yaniv Kaul" <ykaul(a)redhat.com>: On Sun, Nov 19, 2017 at 7:08 PM, Arman Khalatyan <arm2arm(a)gmail.com> wrote: > Hi, in our environment we got pretty good io performance on VM, with > following configuration: > lustrebox: /lust mounted on "GATEWAY" over IB > GATEWAY: export /lust as nfs4 on 10G interface > VM(test.vm): import as NFS over 10G interface > > [root(a)test.vm <root(a)gans.vm> ~]# dd if=/dev/zero bs=128K count=100000 > Without oflag=direct, you are hitting (somewhat) the cache. > > of=/test/tmp/test.tmp > 100000+0 records in > 100000+0 records out > 13107200000 <(310)%20720-0000> bytes (13 GB) copied, 20.8402 s, 629 MB/s > looks promising for the future deployments. > Very - what's the backend storage? > > only one problem remains that on heavy io I get some wornings that the vm > network is saturated, are there way to configure the bandwidth limits to > 10G for the VM Interface?? > Yes, but you really need a dedicated storage interface, no? Y. > > > thank you beforehand, > Arman. > > _______________________________________________ > Users mailing list > Users(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > >

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Some tests results: lustrefs over nfs on VM
by Arman Khalatyan 19 Nov '17

19 Nov '17

Hi, in our environment we got pretty good io performance on VM, with following configuration: lustrebox: /lust mounted on "GATEWAY" over IB GATEWAY: export /lust as nfs4 on 10G interface VM(test.vm): import as NFS over 10G interface [root(a)test.vm <root(a)gans.vm> ~]# dd if=/dev/zero bs=128K count=100000 of=/test/tmp/test.tmp 100000+0 records in 100000+0 records out 13107200000 bytes (13 GB) copied, 20.8402 s, 629 MB/s looks promising for the future deployments. only one problem remains that on heavy io I get some wornings that the vm network is saturated, are there way to configure the bandwidth limits to 10G for the VM Interface?? thank you beforehand, Arman.

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VDSM command GetVmsInfoVDS failed: Missing OVF file from VM
by Алексей Максимов 19 Nov '17

19 Nov '17

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NIC Bonding
by magnus.isaksson＠ilw.se 19 Nov '17

19 Nov '17

----=_RainLoop_715_686258566.1509963308 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Hello!=0AI'm new(-ish) to oVirt and have a question regarding network. = =0A=0A I currently use vmware, the hosts have 4 nic each and connected to= two switches in stack(extreme), i have two vSwitch with two nic each set= up in active/standby, with this i don't have to do anything with the phys= ical switch. =0A So how do i do this setup on oVirt so i don't need to co= nfigure the switches?=0AI know how to bond the cards, but i am afraid of = a switchloop, so i just want to make sure that does not happen.=0A=0ARega= rds=0AMagnus Isaksson ----=_RainLoop_715_686258566.1509963308 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable <!DOCTYPE html><html><head><meta http-equiv=3D"Content-Type" content=3D"t= ext/html; charset=3Dutf-8" /></head><body><div data-html-editor-font-wrap= per=3D"true" style=3D"font-family: arial, sans-serif; font-size: 13px;"> = <signature><signature><p><span display=3D"inline">Hello!<br>I'm new(-ish)= to oVirt and have a question regarding network.</span></p> <p><span disp= lay=3D"inline">I currently use vmware, the hosts have 4 nic each and conn= ected to two switches in stack(extreme), i have two vSwitch with two nic = each setup in active/standby, with this i don't have to do anything with = the physical switch.</span></p> <div><p><span display=3D"inline">So how d= o i do this setup on oVirt so i don't need to configure the switches?<br>= I know how to bond the cards, but i am afraid of a switchloop, so i just = want to make sure that does not happen.</span><br><br>Regards<br>Magnus I= saksson</p></div></signature></signature><br> </div></body></html> ----=_RainLoop_715_686258566.1509963308--

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using oVirt with newer librbd1
by Matthias Leopold 18 Nov '17

18 Nov '17

Hi, we want to use a Ceph cluster as the main storage for our oVirt 4.1.x datacenter. We successfully tested using librbd1-12.2.1-0.el7 package from Ceph repos instead of the standard librbd1-0.94.5-2.el7 from CentOS 7 in an oVirt virtualization node. Are there any caveats when doing so? Will this work in oVirt 4.2? thx matthias

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Snapshot or not?
by Demeter Tibor 17 Nov '17

17 Nov '17

--=_356f090b-8288-4845-8f3a-5ab9dcf0b36a Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Dear Users, I have a disk of a vm, that is have a snapshot. It is very interesting, because there are two other disk of that VM, but there are no snapshots of them. I found this while I've try to migrate a storage-domain between two datacenter. Because, I didn't import that vm from the storage domain, I did an another similar VM with exactly same sized thin-provisioned disks. I have renamed, copied to here my originals. The VM started successfully, but the disk that contain a snapshot did not recognized by the os. I can see the whole disk as raw. (disk id, format in ovirt, filenames of images, etc) . I think ovirt don't know that is a snapshotted image and use as raw. Is it possible? I don't see any snapshot in snapshots. Also I have try to list snapshots with qemu-img info and qemu-img snapshot -l , but it does not see any snapshots in the image. Really, I don't know how is possible this. [root@storage1 8d815282-6957-41c0-bb3e-6c8f4a23a64b]# qemu-img info 5974fd33-af4c-4e3b-aadb-bece6054eb6b image: 5974fd33-af4c-4e3b-aadb-bece6054eb6b file format: qcow2 virtual size: 13T (13958643712000 bytes) disk size: 12T cluster_size: 65536 backing file: ../8d815282-6957-41c0-bb3e-6c8f4a23a64b/723ad5aa-02f6-4067-ac75-0ce0a761627f backing file format: raw Format specific information: compat: 0.10 [root@storage1 8d815282-6957-41c0-bb3e-6c8f4a23a64b]# qemu-img info 723ad5aa-02f6-4067-ac75-0ce0a761627f image: 723ad5aa-02f6-4067-ac75-0ce0a761627f file format: raw virtual size: 2.0T (2147483648000 bytes) disk size: 244G [root@storage1 8d815282-6957-41c0-bb3e-6c8f4a23a64b]# ll total 13096987560 -rw-rw----. 1 36 36 13149448896512 Nov 13 13:42 5974fd33-af4c-4e3b-aadb-bece6054eb6b -rw-rw----. 1 36 36 1048576 Nov 13 19:34 5974fd33-af4c-4e3b-aadb-bece6054eb6b.lease -rw-r--r--. 1 36 36 262 Nov 13 19:54 5974fd33-af4c-4e3b-aadb-bece6054eb6b.meta -rw-rw----. 1 36 36 2147483648000 Jul 8 2016 723ad5aa-02f6-4067-ac75-0ce0a761627f -rw-rw----. 1 36 36 1048576 Jul 7 2016 723ad5aa-02f6-4067-ac75-0ce0a761627f.lease -rw-r--r--. 1 36 36 335 Nov 13 19:52 723ad5aa-02f6-4067-ac75-0ce0a761627f.meta qemu-img snapshot -l 5974fd33-af4c-4e3b-aadb-bece6054eb6b (nothing) Because it is a very big (13 TB) disk I can't migrate to an another image, because I don't have enough free space. So I just would like to use it in ovirt like in the past. I have a very old ovirt (3.5) How can I use this disk? Thanks in advance, Regards, Tibor --=_356f090b-8288-4845-8f3a-5ab9dcf0b36a Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <html><body><div style=3D"font-family: arial, helvetica, sans-serif; font-s= ize: 12pt; color: #000000"><div>Dear Users,</div><div><br data-mce-bogus=3D= "1"></div><div>I have a disk of a vm, that is have a snapshot. It is very i= nteresting, because there are two other disk of that VM, but there are no s= napshots of them.</div><div>I found this while I've try to migrate a storag= e-domain between two datacenter. </div><div>Because, I didn't import t= hat vm from the storage domain, I did an another similar VM with exactly sa= me sized thin-provisioned disks. I have renamed, copied to here my original= s. </div><div><br data-mce-bogus=3D"1"></div><div>The VM started succe= ssfully, but the disk that contain a snapshot did not recognized by the os.= I can see the whole disk as raw. (disk id, format in ovirt, filenames of i= mages, etc) . I think ovirt don't know that is a snapshotted image and use = as raw. Is it possible?</div><div>I don't see any snapshot in snapshots. Al= so I have try to list snapshots with qemu-img info and qemu-img snapshot -l= , but it does not see any snapshots in the image.</div><div><br data-mce-b= ogus=3D"1"></div><div>Really, I don't know how is possible this.</div><div>= <br data-mce-bogus=3D"1"></div><div><div>[root@storage1 8d815282-6957-41c0-= bb3e-6c8f4a23a64b]# qemu-img info 5974fd33-af4c-4e3b-aadb-bece6054eb6b</div= ><div>image: 5974fd33-af4c-4e3b-aadb-bece6054eb6b</div><div>file format: qc= ow2</div><div>virtual size: 13T (13958643712000 bytes)</div><div>disk size:= 12T</div><div>cluster_size: 65536</div><div>backing file: ../8d815282-6957= -41c0-bb3e-6c8f4a23a64b/723ad5aa-02f6-4067-ac75-0ce0a761627f</div><div>back= ing file format: raw</div><div>Format specific information:</div><div>&nbsp= ;   compat: 0.10</div></div><div><div><div><br data-mce-bogus=3D"1"></= div><div>[root@storage1 8d815282-6957-41c0-bb3e-6c8f4a23a64b]# qemu-img inf= o 723ad5aa-02f6-4067-ac75-0ce0a761627f</div><div>image: 723ad5aa-02f6-4067-= ac75-0ce0a761627f</div><div>file format: raw</div><div>virtual size: 2.0T (= 2147483648000 bytes)</div><div>disk size: 244G</div></div><div><br></div><d= iv>[root@storage1 8d815282-6957-41c0-bb3e-6c8f4a23a64b]# ll</div><div>total= 13096987560</div><div>-rw-rw----. 1 36 36 13149448896512 Nov 13 13:42 5974= fd33-af4c-4e3b-aadb-bece6054eb6b</div><div>-rw-rw----. 1 36 36   =     1048576 Nov 13 19:34 5974fd33-af4c-4e3b-aadb-bece6054eb6b.le= ase</div><div>-rw-r--r--. 1 36 36            = 262 Nov 13 19:54 5974fd33-af4c-4e3b-aadb-bece6054eb6b.meta</div><div>-rw-rw= ----. 1 36 36  2147483648000 Jul  8  2016 723ad5aa-02f6-4067= -ac75-0ce0a761627f</div><div>-rw-rw----. 1 36 36       = 1048576 Jul  7  2016 723ad5aa-02f6-4067-ac75-0ce0a761627f.lease<= /div><div>-rw-r--r--. 1 36 36            335 = Nov 13 19:52 723ad5aa-02f6-4067-ac75-0ce0a761627f.meta</div><div><br data-m= ce-bogus=3D"1"></div><div>qemu-img snapshot -l 5974fd33-af4c-4e3b-aadb-bece= 6054eb6b<br data-mce-bogus=3D"1"></div><div><br data-mce-bogus=3D"1"></div>= <div>(nothing)</div><div><br data-mce-bogus=3D"1"></div><div>Because it is = a very big (13 TB) disk I can't migrate to an another image, because I don'= t have enough free space. So I just would like to use it in ovirt like in t= he past. </div><div><br data-mce-bogus=3D"1"></div><div>I have a very = old ovirt (3.5)</div><div><br data-mce-bogus=3D"1"></div><div>How can I use= this disk?</div><div><br data-mce-bogus=3D"1"></div><div>Thanks in advance= ,</div><div><br data-mce-bogus=3D"1"></div><div>Regards,</div></div><div><b= r></div><div data-marker=3D"__SIG_PRE__"><p style=3D"font-family: 'Times Ne= w Roman'; font-size: medium; margin: 0px;" data-mce-style=3D"font-family: '= Times New Roman'; font-size: medium; margin: 0px;"><strong><span style=3D"f= ont-size: medium;" data-mce-style=3D"font-size: medium;"><span style=3D"col= or: #2d67b0;" data-mce-style=3D"color: #2d67b0;"></span></span></strong></p= >Tibor<p></p></div></div></body></html> --=_356f090b-8288-4845-8f3a-5ab9dcf0b36a--

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