9 a.m.
Hi
Has anyone experiencing the following issue with Storage Domain -
Failed to activate Storage Domain cLUN-R940-DC2-dstore01 --
VDSM command ActivateStorageDomainVDS failed: Storage domain does not exist:
(u'1b0ef853-fd71-45ea-8165-cc6047a267bc',)
Currently, the storge Domain is Inactive and strangely, the VMs are running as normal. We
can't manage or extend the volume size of this storage domain. The pvscan shows as:
[root@uk1-ion-ovm-18 pvscan
/dev/mapper/36000d310056978000000000000000014: Checksum error at offset 4397954425856
Couldn't read volume group metadata from
/dev/mapper/36000d310056978000000000000000014.
Metadata location on /dev/mapper/36000d310056978000000000000000014 at 4397954425856 has
invalid summary for VG.
Failed to read metadata summary from /dev/mapper/36000d310056978000000000000000014
Failed to scan VG from /dev/mapper/36000d310056978000000000000000014
I have tired the following steps:
1. Restarted ovirt-engine.service
2. tried to restore the metadata using vgcfgrestore but it failed with the following
error:
[root@uk1-ion-ovm-19 backup]# vgcfgrestore 36000d310056978000000000000000014
Volume group 36000d310056978000000000000000014 has active volume: .
WARNING: Found 1 active volume(s) in volume group
"36000d310056978000000000000000014".
Restoring VG with active LVs, may cause mismatch with its metadata.
Do you really want to proceed with restore of volume group
"36000d310056978000000000000000014", while 1 volume(s) are active? [y/n]: y
/dev/mapper/36000d310056978000000000000000014: Checksum error at offset 4397954425856
Couldn't read volume group metadata from
/dev/mapper/36000d310056978000000000000000014.
Metadata location on /dev/mapper/36000d310056978000000000000000014 at 4397954425856 has
invalid summary for VG.
Failed to read metadata summary from /dev/mapper/36000d310056978000000000000000014
Failed to scan VG from /dev/mapper/36000d310056978000000000000000014
/etc/lvm/backup/36000d310056978000000000000000014: stat failed: No such file or
directory
Couldn't read volume group metadata from file.
Failed to read VG 36000d310056978000000000000000014 from
/etc/lvm/backup/36000d310056978000000000000000014
Restore failed.
Please let me know if anyone knows any possible resolution.
-AMinur
1:19 a.m.
Hi Aminur,
Can you please send the engine and vdsm versions?
On Fri, Jun 7, 2019 at 5:03 PM <aminur.rahman(a)iongroup.com> wrote:
Hi
Has anyone experiencing the following issue with Storage Domain -
Failed to activate Storage Domain cLUN-R940-DC2-dstore01 --
VDSM command ActivateStorageDomainVDS failed: Storage domain does not
exist: (u'1b0ef853-fd71-45ea-8165-cc6047a267bc',)
Currently, the storge Domain is Inactive and strangely, the VMs are
running as normal. We can't manage or extend the volume size of this
storage domain. The pvscan shows as:
[root@uk1-ion-ovm-18 pvscan
/dev/mapper/36000d310056978000000000000000014: Checksum error at offset
4397954425856
Couldn't read volume group metadata from
/dev/mapper/36000d310056978000000000000000014.
Metadata location on /dev/mapper/36000d310056978000000000000000014 at
4397954425856 has invalid summary for VG.
Failed to read metadata summary from
/dev/mapper/36000d310056978000000000000000014
Failed to scan VG from /dev/mapper/36000d310056978000000000000000014
I have tired the following steps:
1. Restarted ovirt-engine.service
2. tried to restore the metadata using vgcfgrestore but it failed with the
following error:
[root@uk1-ion-ovm-19 backup]# vgcfgrestore
36000d310056978000000000000000014
Volume group 36000d310056978000000000000000014 has active volume: .
WARNING: Found 1 active volume(s) in volume group
"36000d310056978000000000000000014".
Restoring VG with active LVs, may cause mismatch with its metadata.
Do you really want to proceed with restore of volume group
"36000d310056978000000000000000014", while 1 volume(s) are active? [y/n]: y
/dev/mapper/36000d310056978000000000000000014: Checksum error at offset
4397954425856
Couldn't read volume group metadata from
/dev/mapper/36000d310056978000000000000000014.
Metadata location on /dev/mapper/36000d310056978000000000000000014 at
4397954425856 has invalid summary for VG.
Failed to read metadata summary from
/dev/mapper/36000d310056978000000000000000014
Failed to scan VG from /dev/mapper/36000d310056978000000000000000014
/etc/lvm/backup/36000d310056978000000000000000014: stat failed: No such
file or directory
Couldn't read volume group metadata from file.
Failed to read VG 36000d310056978000000000000000014 from
/etc/lvm/backup/36000d310056978000000000000000014
Restore failed.
Please let me know if anyone knows any possible resolution.
-AMinur
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--
Regards,
Eyal Shenitzky
2:59 p.m.
On Fri, Jun 7, 2019 at 5:03 PM <aminur.rahman(a)iongroup.com> wrote:
Hi
Has anyone experiencing the following issue with Storage Domain -
Failed to activate Storage Domain cLUN-R940-DC2-dstore01 --
VDSM command ActivateStorageDomainVDS failed: Storage domain does not
exist: (u'1b0ef853-fd71-45ea-8165-cc6047a267bc',)
Currently, the storge Domain is Inactive and strangely, the VMs are
running as normal. We can't manage or extend the volume size of this
storage domain. The pvscan shows as:
[root@uk1-ion-ovm-18 pvscan
/dev/mapper/36000d310056978000000000000000014: Checksum error at offset
4397954425856
Couldn't read volume group metadata from
/dev/mapper/36000d310056978000000000000000014.
Metadata location on /dev/mapper/36000d310056978000000000000000014 at
4397954425856 has invalid summary for VG.
Failed to read metadata summary from
/dev/mapper/36000d310056978000000000000000014
Failed to scan VG from /dev/mapper/36000d310056978000000000000000014
This looks like corrupted vg metadata.
I have tired the following steps:
1. Restarted ovirt-engine.service
2. tried to restore the metadata using vgcfgrestore but it failed with the
following error:
[root@uk1-ion-ovm-19 backup]# vgcfgrestore
36000d310056978000000000000000014
Volume group 36000d310056978000000000000000014 has active volume: .
WARNING: Found 1 active volume(s) in volume group
"36000d310056978000000000000000014".
Restoring VG with active LVs, may cause mismatch with its metadata.
Do you really want to proceed with restore of volume group
"36000d310056978000000000000000014", while 1 volume(s) are active? [y/n]: y
This is not safe, you cannot fix the VG while it is being used by oVirt.
You need to migrate the running VMs to other storage, or shut down the VMs.
Then
deactivate this storage domain. Only then you can try to restore the VG.
/dev/mapper/36000d310056978000000000000000014: Checksum error at offset
4397954425856
Couldn't read volume group metadata from
/dev/mapper/36000d310056978000000000000000014.
Metadata location on /dev/mapper/36000d310056978000000000000000014 at
4397954425856 has invalid summary for VG.
Failed to read metadata summary from
/dev/mapper/36000d310056978000000000000000014
Failed to scan VG from /dev/mapper/36000d310056978000000000000000014
/etc/lvm/backup/36000d310056978000000000000000014: stat failed: No such
file or directory
Looks like you don't have a backup in this host. You may have the most
recent backup
on another host.
Couldn't read volume group metadata from file.
Failed to read VG 36000d310056978000000000000000014 from
/etc/lvm/backup/36000d310056978000000000000000014
Restore failed.
Please let me know if anyone knows any possible resolution.
David, we keep 2 metadata copies on the first PV. Can we use one of the
copies on the PV
to restore the metadata to the least good state?
David, how do you suggest to proceed?
Nir
3:22 p.m.
On Mon, Jun 10, 2019 at 10:59:43PM +0300, Nir Soffer wrote:
> [root@uk1-ion-ovm-18 pvscan
> /dev/mapper/36000d310056978000000000000000014: Checksum error at offset
> 4397954425856
> Couldn't read volume group metadata from
> /dev/mapper/36000d310056978000000000000000014.
> Metadata location on /dev/mapper/36000d310056978000000000000000014 at
> 4397954425856 has invalid summary for VG.
> Failed to read metadata summary from
> /dev/mapper/36000d310056978000000000000000014
> Failed to scan VG from /dev/mapper/36000d310056978000000000000000014
This looks like corrupted vg metadata.
Yes, the second metadata area, at the end of the device is corrupted; the
first metadata area is probably ok. That version of lvm is not able to
continue by just using the one good copy.
Last week I pushed out major changes to LVM upstream to be able to handle
and repair most of these cases. So, one option is to build lvm from the
upstream master branch, and check if that can read and repair this
metadata.
David, we keep 2 metadata copies on the first PV. Can we use one of
the
copies on the PV to restore the metadata to the least good state?
pvcreate with --restorefile and --uuid, and with the right backup metadata
could probably correct things, but experiment with some temporary PVs
first.
4:06 p.m.
On Mon, Jun 10, 2019 at 11:22 PM David Teigland <teigland(a)redhat.com> wrote:
On Mon, Jun 10, 2019 at 10:59:43PM +0300, Nir Soffer wrote:
> > [root@uk1-ion-ovm-18 pvscan
> > /dev/mapper/36000d310056978000000000000000014: Checksum error at
offset
> > 4397954425856
> > Couldn't read volume group metadata from
> > /dev/mapper/36000d310056978000000000000000014.
> > Metadata location on /dev/mapper/36000d310056978000000000000000014 at
> > 4397954425856 has invalid summary for VG.
> > Failed to read metadata summary from
> > /dev/mapper/36000d310056978000000000000000014
> > Failed to scan VG from /dev/mapper/36000d310056978000000000000000014
>
> This looks like corrupted vg metadata.
Yes, the second metadata area, at the end of the device is corrupted; the
first metadata area is probably ok. That version of lvm is not able to
continue by just using the one good copy.
Can we copy the first metadata area into the second metadata area?
Last week I pushed out major changes to LVM upstream to be able to handle
and repair most of these cases. So, one option is to build lvm from
the
upstream master branch, and check if that can read and repair this
metadata.
This sound pretty risky for production.
David, we keep 2 metadata copies on the first PV. Can we use one of
the
> copies on the PV to restore the metadata to the least good state?
pvcreate with --restorefile and --uuid, and with the right backup metadata
What would be the right backup metadata?
could probably correct things, but experiment with some temporary
PVs
first.
Aminur, can you copy and compress the metadata areas, and shared them
somewhere?
To copy the first metadata area, use:
dd if=/dev/mapper/360014058ccaab4857eb40f393aaf0351 of=md1 bs=128M count=1
skip=4096 iflag=skip_bytes
To copy the second metadata area, you need to know the size of the PV. On
my setup with 100G
PV, I have 800 extents (128M each), and this works:
dd if=/dev/mapper/360014058ccaab4857eb40f393aaf0351 of=md2 bs=128M count=1
skip=799
gzip md1 md2
Nir
3:44 a.m.
Hi Nir
Yes, the metadata was corrupted but the VMs were running OK. This master storage domain
has increased its allocation significantly overnight and ran out the space limit and went
to offline completely. The cluster was online and VMs were running OK but the affected
Storage Domain went offline. I tired increase the storage domain but the Ovirt wasn’t
allowing to expend the storage.
Due to time constrain, I had restore the storage domain using Compellent snapshot.
However, we need to prevent this happening again when Master storage Domain fill-up with
the space. Currently, we have the following parameter set in the 5TB storage Domain.
ID: 0e1f2a5d-a548-476c-94bd-3ab3fe239926
Size: 5119 GiB
Available: 2361 GiB
Used: 2758 GiB
Allocated: 3104 GiB
Over Allocation Ratio: 14%
Images: 13
Warning Low Space Indicator: 10% (511 GiB)
Critical Space Action Blocker: 5 GiB
Please kindly advise what action needs to implement, so we can prevent this occurs again
in the future.
Thanks
Aminur Rahman
aminur.rahman@iongroup.com<mailto:aminur.rahman@iongroup.com>
t
+44 20 7398 0243<tel:+44%2020%207398%200243>
m
+44 7825 780697<tel:+44%207825%20780697%3c>
iongroup.com<https://www.iongroup.com>
From: Nir Soffer <nsoffer(a)redhat.com>
Sent: 10 June 2019 22:07
To: David Teigland <teigland(a)redhat.com>
Cc: Aminur Rahman <aminur.rahman(a)iongroup.com>; users <users(a)ovirt.org>
Subject: Re: [ovirt-users] Failed to activate Storage Domain --- ovirt 4.2
On Mon, Jun 10, 2019 at 11:22 PM David Teigland
<teigland@redhat.com<mailto:teigland@redhat.com>> wrote:
On Mon, Jun 10, 2019 at 10:59:43PM +0300, Nir Soffer wrote:
> [root@uk1-ion-ovm-18 pvscan
> /dev/mapper/36000d310056978000000000000000014: Checksum error at offset
> 4397954425856
> Couldn't read volume group metadata from
> /dev/mapper/36000d310056978000000000000000014.
> Metadata location on /dev/mapper/36000d310056978000000000000000014 at
> 4397954425856 has invalid summary for VG.
> Failed to read metadata summary from
> /dev/mapper/36000d310056978000000000000000014
> Failed to scan VG from /dev/mapper/36000d310056978000000000000000014
This looks like corrupted vg metadata.
Yes, the second metadata area, at the end of the device is corrupted; the
first metadata area is probably ok. That version of lvm is not able to
continue by just using the one good copy.
Can we copy the first metadata area into the second metadata area?
Last week I pushed out major changes to LVM upstream to be able to handle
and repair most of these cases. So, one option is to build lvm from the
upstream master branch, and check if that can read and repair this
metadata.
This sound pretty risky for production.
David, we keep 2 metadata copies on the first PV. Can we use one of
the
copies on the PV to restore the metadata to the least good state?
pvcreate with --restorefile and --uuid, and with the right backup metadata
What would be the right backup metadata?
could probably correct things, but experiment with some temporary PVs
first.
Aminur, can you copy and compress the metadata areas, and shared them somewhere?
To copy the first metadata area, use:
dd if=/dev/mapper/360014058ccaab4857eb40f393aaf0351 of=md1 bs=128M count=1 skip=4096
iflag=skip_bytes
To copy the second metadata area, you need to know the size of the PV. On my setup with
100G
PV, I have 800 extents (128M each), and this works:
dd if=/dev/mapper/360014058ccaab4857eb40f393aaf0351 of=md2 bs=128M count=1 skip=799
gzip md1 md2
Nir
1774
days inactive
1778
days old
6 comments
5 participants
participants (5)
-
Aminur Rahman -
aminur.rahman＠iongroup.com
-
David Teigland -
Eyal Shenitzky -
Nir Soffer