[ovirt-users] [STORAGE] Adding posix compliant FS

Thu Dec 18 06:12:01 UTC 2014

Hi Julian,

Please see my questions inline.

Vered

----- Original Message -----
> From: "Julian De Marchi" <julian at jdcomputers.com.au>
> To: "Vered Volansky" <vered at redhat.com>
> Cc: users at ovirt.org
> Sent: Wednesday, December 17, 2014 4:29:36 PM
> Subject: Re: [ovirt-users] [STORAGE] Adding posix compliant FS
> 
> On 17/12/14 21:38, Vered Volansky wrote:
> > Hi Julian,
> 
> Hey Vered,
> 
> > IIUC the you have a self-created lvm, to which you're trying to connect as
> > posix using ovirt.
> > If that's the case please try to manually change the device's permissions
> > to 36:36 under /dev/<your_VG>.
> > If that doesn't work try the actual device it's mapped to (which is what
> > vdsm actually tries to mount).
> > If that also doesn't work please send us the output of:
> >>> ls -lh /dev/<your_VG> .
> 
> Still failed mate after a chmod 36:36. The thing is though, it _does_
> mount the device for a moment before failing and unmounting it...
Is this the same behaviour as before?

> 
> [root at blade01 ~]# ls /dev/VolGroup/lv_images -lh
> lrwxrwxrwx 1 root root 7 Dec 15 16:52 /dev/VolGroup/lv_images -> ../dm-2

I see /dev/VolGroup/lv_images are still root:root.
Please chown 36:36 as well.

Please state the all the chown you tried.

> [root at blade01 ~]# ls /dev/dm-2 -lh
> brw-rw---- 1 vdsm kvm 253, 2 Dec 15 16:52 /dev/dm-2
> 
> >
> > Regards,
> > Vered
> >
> > ----- Original Message -----
> >> From: "Julian De Marchi" <julian at jdcomputers.com.au>
> >> To: users at ovirt.org
> >> Sent: Wednesday, December 17, 2014 3:35:34 AM
> >> Subject: Re: [ovirt-users] [STORAGE] Adding posix compliant FS
> >>
> >> Think I found some more clues.
> >>
> >> Thread-21910::DEBUG::2014-12-17
> >> 11:26:07,277::lvm::288::Storage.Misc.excCmd::(cmd) /usr/bin/sudo -n
> >> /sbin/lvm vgs --config ' devices { preferred_names = ["^/dev/mapper/"]
> >> ignore_suspended_devices=1 write_cache_state=0
> >> disable_after_error_count=3 obtain_device_list_from_udev=0 filter = [
> >> '\''r|.*|'\'' ] }  global {  locking_type=1  prioritise_write_locks=1
> >> wait_for_locks=1  use_lvmetad=0 }  backup {  retain_min = 50
> >> retain_days = 0 } ' --noheadings --units b --nosuffix --separator '|'
> >> --ignoreskippedcluster -o
> >> uuid,name,attr,size,free,extent_size,extent_count,free_count,tags,vg_mda_size,vg_mda_free,lv_count,pv_count,pv_name
> >> 3ba06bee-861e-4868-8e89-f29f785bab65 (cwd None)
> >> Thread-21910::DEBUG::2014-12-17
> >> 11:26:07,348::lvm::288::Storage.Misc.excCmd::(cmd) FAILED: <err> = '
> >> Volume group "3ba06bee-861e-4868-8e89-f29f785bab65" not found\n
> >> Skipping volume group 3ba06bee-861e-4868-8e89-f29f785bab65\n'; <rc> = 5
> >> Thread-21910::WARNING::2014-12-17
> >> 11:26:07,350::lvm::370::Storage.LVM::(_reloadvgs) lvm vgs failed: 5 []
> >> ['  Volume group "3ba06bee-861e-4868-8e89-f29f785bab65" not found', '
> >> Skipping volume group 3ba06bee-861e-4868-8e89-f29f785bab65']
> >> Thread-21910::DEBUG::2014-12-17
> >> 11:26:07,351::lvm::407::Storage.OperationMutex::(_reloadvgs) Operation
> >> 'lvm reload operation' released the operation mutex
> >>
> >> But I still don't understand what it's trying to do. Just to recap, I do
> >> see it create the dir and mount the device. But when it fails it umounts
> >> everything.
> >>
> >> I tried to manually create the DIR it is expecting, but ovirt seems to
> >> remove it and re-create it which then ends up with root:root. I can see
> >> this as when I add the storage I run watch ls -lh and can see it all
> >> occur.
> >>
> >> Any help would still be greatly appreciated!
> >>
> >> On 12/16/14 19:46, Julian De Marchi wrote:
> >>> On 16/12/14 17:20, Aharon Canan wrote:
> >>>> Did you "chown 36:36" the folder to get the right permissions for
> >>>> adding to ovirt?
> >>>
> >>> That's the thing. Ovirt actually creates that dir when I go and try to
> >>> add the storage. It mounts the LVM device to that dir then fails. In the
> >>> logs I posted at http://pastebin.com/fzN9ktAX you can see it is failing
> >>> with a permission denied error. The command that is above the error is
> >>> touch. I think it is trying to touch a file to ensure all is well and
> >>> when that fails it gives the error.
> >>>
> >>> If I knew where in the code to prefix the touch command with sudo and
> >>> add a line to the sudoers entry I can test this idea.
> >>>
> >>> [...]
> >>>
> >>>> ----- Original Message -----
> >>>>
> >>>> From: "Julian De Marchi" <julian at jdcomputers.com.au>
> >>>> To: users at ovirt.org
> >>>> Sent: Tuesday, December 16, 2014 4:40:04 AM
> >>>> Subject: Re: [ovirt-users] [STORAGE] Adding posix compliant FS
> >>>>
> >>>> On 12/16/14 08:57, Julian De Marchi wrote:
> >>>>> Heya--
> >>>>>
> >>>>> I'm using ovirt 3.5 and trying to add a posix compliant FS to a node in
> >>>>> my cluster.
> >>>>>
> >>>>> The storage I'm trying to add is contained within LVM. Below is a link
> >>>>> to my log files on the node where I'm trying to attach the storage.
> >>>>>
> >>>>> http://pastebin.com/fzN9ktAX
> >>>>>
> >>>>> I've read the ovirt manual for adding posix compliant storage and
> >>>>> believe I'm doing everything correct.
> >>>>>
> >>>>> Any help to get this storage added would be great thanks and if I
> >>>>> forgot
> >>>>> to include any info please ask.
> >>>>
> >>>> More info to add. I was doing an "ls" on the dir it does the mount in
> >>>> and saw the dir was owned by root:root with different perms to the ones
> >>>> mounted via NFS.
> >>>>
> >>>> [root at blade01 libvirt]# ls /rhev/data-center/mnt/ -lh
> >>>> total 20K
> >>>> drwxrwxrwx 4 root root 4.0K Dec 11 09:00 10.106.200.100:_VM__IMAGES
> >>>> drwxrwxrwx 3 root root 4.0K Oct 17 09:42 10.106.200.22:_opt_vmexport
> >>>> drwxrwxrwx 4 root root 4.0K Oct 17 09:39
> >>>> 10.106.200.22:_var_lib_libvirt_images
> >>>> drwxr-xr-x 3 root root 4.0K Dec 15 16:52 _dev_mapper_VolGroup-lv__images
> >>>>
> >>>> This could explain why the touch command fails.
> >>>>
> >>>> Still at a loss over the issue though.
> >>>
> >>> _______________________________________________
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> >>> http://lists.ovirt.org/mailman/listinfo/users
> >>
> >> _______________________________________________
> >> Users mailing list
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> >> http://lists.ovirt.org/mailman/listinfo/users
> >>
> 
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