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Modify vmdk UUID to work hotadd
Hy!
Nowadays I noticed that some VMs cannot us the hotadd feature during backup. I checked the Veeam VMs log, and identify there are some VMs wihch has tha same disk UUID. I think these VMS deployed from template. What do you think, can I modify the disk UUID manually in VMware? Is it safe? Are there any impact for the runing VM?
https://kb.vmware.com/s/article/2006865
Thanks.
Nowadays I noticed that some VMs cannot us the hotadd feature during backup. I checked the Veeam VMs log, and identify there are some VMs wihch has tha same disk UUID. I think these VMS deployed from template. What do you think, can I modify the disk UUID manually in VMware? Is it safe? Are there any impact for the runing VM?
https://kb.vmware.com/s/article/2006865
Thanks.
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Re: Modify vmdk UUID to work hotadd
Hi Adam
It's safe. But could it be, that you are affected by this known issue?
https://www.veeam.com/kb4460
If so, please disable multipath on your Linux proxies and the duplicated issue will not shown anymore in Veeam job session logs.
Best,
Fabian
It's safe. But could it be, that you are affected by this known issue?
https://www.veeam.com/kb4460
If so, please disable multipath on your Linux proxies and the duplicated issue will not shown anymore in Veeam job session logs.
Best,
Fabian
Product Management Analyst @ Veeam Software
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Re: Modify vmdk UUID to work hotadd
No. There is the following in during the backup: Unable to hot add source disk vmname.vmdk, failing over to network mode...
There isn't any error.
There isn't any error.
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Re: Modify vmdk UUID to work hotadd
Then it's a technical issue which must be investigated via a support case.
You can change the disk UUID on VMware side. But I expect Veeam to take a new full backup of this disk.
Best,
Fabian
You can change the disk UUID on VMware side. But I expect Veeam to take a new full backup of this disk.
Best,
Fabian
Product Management Analyst @ Veeam Software
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Re: Modify vmdk UUID to work hotadd
I am testing the Virtual Appliance mode with two VMs. I create these two VMs with template. I checked the vmdk file UUID:
The UUID is different, but even so the backup job say during backup:
2023. 09. 19. 13:42:46 :: Unable to hot add source disk TST02.vmdk, failing over to network mode...
I checked the TST02 VM logs:
The Veeam can backup with hotadd the TST01 VMs. I don't idea which UUID is wrong so the two VMs disk UUID is different.
Code: Select all
[root@node01:/vmfs/volumes/ee9ab993-c8b5b227] vmkfstools -J getuuid /vmfs/volumes/ee9ab993-c8b5b227/TST02/TST02.vmdk
UUID is 60 00 C2 99 fd 80 2f 62-00 ea 88 f1 67 f1 1e 93
[root@node01:/vmfs/volumes/ee9ab993-c8b5b227] vmkfstools -J getuuid /vmfs/volumes/ee9ab993-c8b5b227/TST01/TST01.vmdk
UUID is 60 00 C2 9d 72 28 45 a7-82 09 83 7b 6d 23 40 dd
2023. 09. 19. 13:42:46 :: Unable to hot add source disk TST02.vmdk, failing over to network mode...
I checked the TST02 VM logs:
Code: Select all
[TryInvoke] Invocation error;
[19.09.2023 13:31:10.125] <50> Error Failed to get guest OS path for newly attached disk [SimplivityDS1] TST02/TST02.vmdk: there are 2 new disks with uuid 6000C299-fd80-2f62-00ea-88f167f11e93 (System.Exception)
[19.09.2023 13:31:10.125] <50> Error at Veeam.Backup.Core.CSoapHotaddAttachAlg.RescanDisksAndGetAttachedDiskPath(CVirtualDisk disk, String diskPath, IEnumerable`1 diskUuidsAndPathsBeforeAttach)
[19.09.2023 13:31:10.125] <50> Error at Veeam.Backup.Common.SFunctionExtensions.TryInvoke[TResult](Func`1 action, Int32 retryCount, TimeSpan timeout, Func`2 excFilter)
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Re: Modify vmdk UUID to work hotadd
Hy!Mildur wrote: ↑Sep 19, 2023 7:31 am Hi Adam
It's safe. But could it be, that you are affected by this known issue?
https://www.veeam.com/kb4460
If so, please disable multipath on your Linux proxies and the duplicated issue will not shown anymore in Veeam job session logs.
Best,
Fabian
Meanwhile I turned off the multipath and my problem is resolved. Thanks!
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Re: Modify vmdk UUID to work hotadd
Hi Adam
You're welcome.
I'm glad the kb article worked in your case too.
Best,
Fabian
You're welcome.
I'm glad the kb article worked in your case too.
Best,
Fabian
Product Management Analyst @ Veeam Software
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