Backup agent for Linux servers and workstations on-premises or in the public cloud
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nghh
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Snapshot overflow

Post by nghh » Jul 19, 2016 5:37 pm

Hi,

we have CentOS server with LVM and try to backup it with Veeam for Linux. When the backup is nearly completed we get the following error message:

Code: Select all

2016-07-18 19:01:39 [error] Snapshot overflow.
2016-07-18 19:01:39 [error] Failed to perform backup
Output of df -h:

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Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_xxx-lv_root
                      242G  110G  120G  48% /
tmpfs                 3,9G     0  3,9G   0% /dev/shm
/dev/sda1             485M  139M  321M  31% /boot
Any idea what "Snapshot overflow" exactly means? Thanks a lot :-)

Gostev
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Re: Snapshot overflow

Post by Gostev » Jul 19, 2016 6:37 pm

Hi, it means there were lots of write activity on the protected computer during backup, which filled all available space in the snapshot file. In this beta, snapshot file is preallocated file of a few GB in size (don't remember how much). The release version will support dynamic snapshot file growth though. Thanks!

nghh
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Re: Snapshot overflow

Post by nghh » Jul 19, 2016 6:58 pm

Thanks a lot for your quick reply. Is it possible to modify the size of snapshot file in this beta version?

Gostev
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Re: Snapshot overflow

Post by Gostev » Jul 19, 2016 10:35 pm 1 person likes this post

I don't think so, but let's wait for Pavel to confirm.

PTide
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Re: Snapshot overflow

Post by PTide » Jul 20, 2016 12:02 pm 1 person likes this post

Hi,

Please make sure that the set of volumes that you backup does not include the destination volume, i.e. the entire machine backup should be targeted to a shared folder. If you already meet that requirement please check you forum inbox - I've sent you a PM describing how to set snapshot size. Also please archive and share the /var/log/veeam directory so we can check at what snapshot size did the job fail.

Thanks.

andreiw
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Re: Snapshot overflow

Post by andreiw » Aug 05, 2016 2:59 pm

Hello PTide,

I'm having the same issue, it's a development zabbix server that's pulling monitoring telemetry from 40+ servers (100 or so values per second). Backup fails around 30% with snapshot overflow. I was going to test turning off all the services and trying again but if there's a way I can expand the snapshot size I'd love to try it out if you don't mind giving me the option. If not that's fine I'll wait for dynamic snaps to come out.

Thanks,

Andrei

SPart
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Re: Snapshot overflow

Post by SPart » Oct 12, 2016 4:12 pm

The same problem happens here.
The size of the disk we need to backup is 1 TB

PTide
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Re: Snapshot overflow

Post by PTide » Oct 21, 2016 11:42 am

Hi,
The same problem happens here. The size of the disk we need to backup is 1 TB
Sent you instructions via PM.

Thanks

Nettkroken
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Re: Snapshot overflow

Post by Nettkroken » Nov 08, 2016 8:23 am

I also have this problem, can I get the instructions?

PTide
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Re: Snapshot overflow

Post by PTide » Nov 08, 2016 5:08 pm

Hi,

Sent you via PM

boatmn810
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Re: Snapshot overflow

Post by boatmn810 » Nov 09, 2016 12:58 am

Can I get that PM with the instructions as well ?

PTide
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Re: Snapshot overflow

Post by PTide » Nov 09, 2016 1:51 pm

Hi,

Sure, check your PM.

marcinbojko
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Re: Snapshot overflow

Post by marcinbojko » Nov 10, 2016 11:57 am

I would like to have one to, same problem.

PTide
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Re: Snapshot overflow

Post by PTide » Nov 10, 2016 3:19 pm

Hi,

I sent you instructions. Could you please provide some details about your job settings and the server configuration?

Thanks

marcinbojko
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Re: Snapshot overflow

Post by marcinbojko » Nov 14, 2016 7:17 am

Thanks, looks good.
Works ;)

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