Re: [Users] (potential bug) After I create a virtual disk I am unable to start a VM - Permissions issue ? The node seems to have no write access to the directory on the NFS server...

From advise in IRC I changed

Hi Just to update this. On the NFS server I created vdsm:kvm user/group Also on my debian NFS server I have in /etc/default/nfs-kernel-server RPCMOUNTDOPTS="--manage-gids --no-nfs-version 4" But the node always mounted in nfs4 (according to the mount command) From advise in IRC I changed # nfs_mount_options = soft,nosharecache to nfs_mount_options = soft,nosharecache,vers=3 - then re attached the node - it now shows as nfs3 using the  mount command  and has the correct UID/GID i.e ls -al /rhev/data-center/b2b2e054-66b2-11e1-bda3-1728f784de9e/2f7ee7bc-09b3-42ba-af91-40d79293e360/images/7e2f025e-5676-4592-84fd-7c9661f5ee2e/  total 2097168  drwxr-xr-x. 2 vdsm kvm       4096 Mar 28 15:23 .  drwxr-xr-x. 3 vdsm kvm       4096 Mar 28 15:23 ..  -rw-rw----. 1 vdsm kvm 2147483648 Mar 28 15:23 e4aa8bf8-0cb8-4f1c-84cf-b83909f7206b  -rw-r--r--. 1 vdsm kvm        320 Mar 28 15:23 e4aa8bf8-0cb8-4f1c-84cf-b83909f7206b.meta It still doesn't work... Cheers On 28 March 2012 16:26, Keith Robertson <kroberts(a)redhat.com&gt; wrote: > Morgan, > > I did some googling and it looks like that ID, i.e. 4294967294, is the > nfsnobody ID.  There are various posts on the debian forums related to it. > > One suspicion I have is that your debian server is running NFSv4.  Try > turning it off [1] as oVirt doesn't currently support it [2]. > > [1] >  "RPCMOUNTDOPTS=--no-nfs-version 4": >  http://lists.debian.org/debian-user/2011/11/msg01892.html > [2] http://www.ovirt.org/wiki/Troubleshooting_NFS_Storage_Issues > > Cheers, > Keith > > > On 03/28/2012 09:51 AM, Keith Robertson wrote: >> >> On 03/28/2012 09:30 AM, Morgan Cox wrote: >>> >>> Hi. >>> >>> My setup is 3 servers >>> >>> 1. Frontend (engine). >>> 2 Ovirt node >>> 3. Nfs server (debian) >>> >>>  From the Frontend (engine) :- >>> >>> -bash-4.2$ ls -la >>> >>> /tmp/test/2f7ee7bc-09b3-42ba-af91-40d79293e360/images/d1fcc1ae-dcf5-426e-a99f-3a48e84c5ae3/ >>> total 2097168 >>> drwxr-xr-x. 2 vdsm kvm       4096 Mar 28  2012 . >>> drwxr-xr-x. 3 vdsm kvm       4096 Mar 28  2012 .. >>> -rw-rw----. 1 vdsm kvm 2147483648 Mar 28  2012 >>> 9fe193c9-7139-4a6c-933a-c6f31d5e96bd >>> -rw-r--r--. 1 vdsm kvm        317 Mar 28  2012 >>> 9fe193c9-7139-4a6c-933a-c6f31d5e96bd.meta >>> >>> >>> I have (now) write access with vdsm user from here >>> >>>  From the node (look at ownership....) :- >>> >>> >>> -bash-4.2$ ls -la >>> >>> /rhev/data-center/b2b2e054-66b2-11e1-bda3-1728f784de9e/2f7ee7bc-09b3-42ba-af91-40d79293e360/images/d1fcc1ae-dcf5-426e-a99f-3a48e84c5ae3/ >>> total 2097168 >>> drwxr-xr-x. 2 4294967294 4294967294       4096 Mar 28 13:21 . >>> drwxr-xr-x. 3 4294967294 4294967294       4096 Mar 28 13:05 .. >>> -rw-rw----. 1 4294967294 4294967294 2147483648 Mar 28 13:05 >>> 9fe193c9-7139-4a6c-933a-c6f31d5e96bd >>> -rw-r--r--. 1 4294967294 4294967294        317 Mar 28 13:05 >>> 9fe193c9-7139-4a6c-933a-c6f31d5e96bd.meta >>> >> Morgan, >> Look at the UID/GID here.  They are definitely not 36:36; hence, the user >> VDSM *might* have an issue with R/W privileged from the node. >> >> Can the user VDSM R/W anything in the mounted directory from the node? >>  Also, if you don't want to create a UID/GID combination on the NFS server >> of 36:36 try pinning it... >> $ cat /etc/exports >> /virt/iso >>  192.168.122.11(rw,sync,all_squash,anonuid=107,anongid=107) <-- I'm pinning >> to 107 because I don't want 36:36 on my NFS server. >> >> >> >> >>> Also >>> >>>  From the engine - mount command:- >>> >>> 10.0.0.190:/storage1/ on /tmp/test type nfs >>> >>> (rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=10.0.0.190,mountvers=3,mountport=35065,mountproto=udp,local_lock=none,addr=10.0.0.190) >>> >>> - note that the NFS share wasn't mounted until I mounted it... >>> >>>  From the node - mount command >>> >>> 10.0.0.190:/storage1/ on /rhev/data-center/mnt/10.0.0.190:_storage1 >>> type nfs4 >>> (rw,relatime,vers=4,rsize=1048576,wsize=1048576,namlen=255,soft,nosharecache,proto=tcp,port=0,timeo=600,retrans=6,sec=sys,clientaddr=10.0.0.101,minorversion=0,local_lock=none,addr=10.0.0.190) >>> >>> - looks like nfs4 on the node........ >>> >>> Any ideas anyone ? >>> >>> Cheers >>> >>> >>> >>> >>> >>> >>> On 28 March 2012 06:45, Deepak C Shetty&lt;deepakcs(a)linux.vnet.ibm.com&gt; >>>  wrote: >>>> >>>> On 03/27/2012 04:08 PM, Morgan Cox wrote: >>>> >>>> Hi >>>> >>>> http://www.ovirt.org/wiki/Troubleshooting_NFS_Storage_Issues >>>> >>>> - This seems to refer to setup on a redhat based system >>>> >>>> The fies it refers to do not exist on Debian - i.e >>>> >>>> /etc/sysconfig/nfs and/etc/nfsmount.conf - they do not exist... >>>> >>>> Do you know the equivalent on Debian ? >>>> >>>> >>>> Sorry, i use fedora, and I dont know the equivalent of Debain. >>>> Maybe asking the big brain(google) might help. There should be an >>>> equivalent way of doing the same on debian. >>>> >>>> Also in my case v4 was not a issue, as much as the perms and uid:gid >>>> were, so look further to see perms and selinux booleans are >>>> set correctly in your setup. >>>> >>>> >>>> Regards >>>> >>>> >>>> On 27 March 2012 07:07, Deepak C Shetty&lt;deepakcs(a)linux.vnet.ibm.com&gt; >>>>  wrote: >>>>> >>>>> On 03/26/2012 05:28 PM, Morgan Cox wrote: >>>>> >>>>> Hi. >>>>> >>>>> Still not actually managed to test a vm... I can start a VM (and use >>>>> spice) without a virtual disk. >>>>> >>>>> However as soon as I add a virtual disk the VM no longer starts >>>>> >>>>> >>>>> Go thru this and see if it helps... >>>>> http://www.ovirt.org/wiki/Troubleshooting_NFS_Storage_Issues >>>>> >>>>> >>>>> example error message >>>>> >>>>> >>>>> >>>>> ------------------------------------------------------------------------------------------------------------------- >>>>> VM ddf is down. Exit message internal error process exited while >>>>> connecting to monitor: qemu-kvm: -drive >>>>> >>>>> file=/rhev/data-center/b2b2e054-66b2-11e1-bda3-1728f784de9e/2f7ee7bc-09b3-42ba-af91-40d79293e360/images/c507a2bc-38c5-498e-88c0-7cce8169cf67/6c36c8e4-6618-42f3-9cc4-06d2bccdc9cf,if=none,id=drive-virtio-disk0,format=raw,serial=c507a2bc-38c5-498e-88c0-7cce8169cf67,cache=none,werror=stop,rerror=stop,aio=threads: >>>>> could not open disk image >>>>> >>>>> /rhev/data-center/b2b2e054-66b2-11e1-bda3-1728f784de9e/2f7ee7bc-09b3-42ba-af91-40d79293e360/images/c507a2bc-38c5-498e-88c0-7cce8169cf67/6c36c8e4-6618-42f3-9cc4-06d2bccdc9cf: >>>>> Permission denied . >>>>> >>>>> >>>>> ------------------------------------------------------------------------------------------------------------------- >>>>> >>>>> I have noticed that the >>>>> directory /rhev/data-center/b2b2e054-66b2-11e1-bda3-1728f784de9e/ is >>>>> not >>>>> writable via the ovirt node server. >>>>> >>>>> I am using a separate NFS server for storage. >>>>> >>>>> Is this a bug ? >>>>> >>>>> Does anyone know how to fix this ? >>>>> >>>>> shall I report it ? >>>>> >>>>> Many regards ! >>>>> >>>>> >>>>> _______________________________________________ >>>>> 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 >> >> >