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...

[root@blade01 ~]# ls /dev/VolGroup/lv_images -lh
lrwxrwxrwx 1 root root 7 Dec 15 16:52 /dev/VolGroup/lv_images -> ../dm-2
[root@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" <jul...@jdcomputers.com.au>
To: users@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" <jul...@jdcomputers.com.au>
To: users@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@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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