Host-based backup of VMware vSphere VMs.
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Kris1992
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VSS_WS_FAILED_AT_PREPARE_SNAPSHOT

Post by Kris1992 »

Hello,
I know, that problem was in this forum, but I can't solve this :(
Event log from Veeam:
Processing VM_SQL Error: Unfreeze error: [Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. A VSS critical writer has failed. Writer name: [SqlServerWriter]. Class ID: [{a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}]. Instance ID: [{40a7d7f0-4a49-4ca4-9eda-81a4bc6cc770}]. Writer's state: [VSS_WS_FAILED_AT_PREPARE_SNAPSHOT]. Error code: [0x800423f4].]

Unable to release guest. Error: Unfreeze error: [Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. A VSS critical writer has failed. Writer name: [SqlServerWriter]. Class ID: [{a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}]. Instance ID: [{40a7d7f0-4a49-4ca4-9eda-81a4bc6cc770}]. Writer's state: [VSS_WS_FAILED_AT_PREPARE_SNAPSHOT]. Error code: [0x800423f4].]
Error: Unfreeze error: [Backup job failed. Cannot create a shadow copy of the volumes containing writer's data. A VSS critical writer has failed. Writer name: [SqlServerWriter]. Class ID: [{a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}]. Instance ID: [{40a7d7f0-4a49-4ca4-9eda-81a4bc6cc770}]. Writer's state: [VSS_WS_FAILED_AT_PREPARE_SNAPSHOT]. Error code: [0x800423f4].]
PTide
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Re: VSS_WS_FAILED_AT_PREPARE_SNAPSHOT

Post by PTide »

Hi,

Have you already tried the steps described here? If that does not help, kindly contact our support team and post your case ID in this thread.

Thanks!
aich365
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Re: VSS_WS_FAILED_AT_PREPARE_SNAPSHOT

Post by aich365 »

Hi Kriss
I had this with a Customer and it failed at the pretty much the same time every night. It was found SQL was running its own backup at the same time. Check Event Viewer to see what else is happening. We ended up re-timing the job but it still failed occasionally if the SQL backup over-ran.
Kris1992
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Re: VSS_WS_FAILED_AT_PREPARE_SNAPSHOT

Post by Kris1992 »

P.Tide wrote: Sep 19, 2019 12:45 pm Have you already tried the steps described here? If that does not help, kindly contact our support team and post your case ID in this thread.
I don't have this aplication on my server, weird? so I can't try this ;( How I can contact with support team?

aich365>> I checked, unfortunately not :(

Log from Windows Events for example:
Sqllib error: OLEDB Error encountered calling ICommandText::Execute. hr = 0x80040e14. SQLSTATE: 42000, Native Error: 3013
Error state: 1, Severity: 16
Source: Microsoft SQL Server Native Client 10.0
Error message: BACKUP DATABASE is terminating abnormally.
SQLSTATE: 42000, Native Error: 3202
Error state: 1, Severity: 16
Source: Microsoft SQL Server Native Client 10.0
Error message: Write on "{1B02C911-65C5-4CC9-A0CB-AE85A7B1F831}4" failed: 995(Operacja We/Wy została przerwana z powodu zakończenia wątku lub żądania aplikacji.)
BACKUP failed to complete the command BACKUP DATABASE (name of database ). Check the backup application log for detailed messages.
foggy
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Re: VSS_WS_FAILED_AT_PREPARE_SNAPSHOT

Post by foggy »

Please open a case at https://cp.veeam.com.
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