Issue Backup task notification

[xdelios]

Hello,

I am have a plesk latest version hosted on a Hetzner dedicated server.
I was ,up until now, getting backups to an FTP storage but I recently added a storagebox via mount.cifs to the server and decided to take backups there.

Now my issue is that 1 every 3 backups (may be random to be honest not sure) is getting me a warning and ends up stopping at half the size.

The warning I am getting is the following ( I replaced the domain)
First thing I thought maybe the time schedule that the backup is runnning maybe interferes with something else...is that a possibility?
I tried plesk repair fs in case there was a filesystem error but that shows that everything is good.

Any ideas would be much appreciated.

Thank you

<message severity="warning">
<description>Unable to back up files from /var/www/vhosts/domain owned by system user. Error: Failed to create archive: Failed to close volume: (5) Input/output error
</description>
</message>

 

[IgorG]

I saw a similar problem on the server with a lack of RAM or SWAP.
I suggest you check the system log file /var/log/messages to understand what happened around that timeframe. The kernel can struggle to allocate RAM and SWAP with some kind of messages like:

Aug 27 13:14:41 discovery kernel: Node 0 DMA32 free:81700kB min:25108kB low:31384kB high:37660kB active_anon:1975848kB inactive_anon:120920kB active_file:193204kB inactive_file:224896kB unevictable:0kB writepending:43524kB present:312920
0kB managed:2899824kB mlocked:0kB kernel_stack:2368kB pagetables:26872kB bounce:0kB free_pcp:1468kB local_pcp:0kB free_cma:0kB
Aug 27 13:14:41 discovery kernel: lowmem_reserve[]: 0 0 4768 4768 4768
Aug 27 13:14:41 discovery kernel: Node 0 Normal free:52728kB min:42336kB low:52920kB high:63504kB active_anon:3908636kB inactive_anon:148792kB active_file:148456kB inactive_file:214104kB unevictable:0kB writepending:47668kB present:50462
72kB managed:4889652kB mlocked:0kB kernel_stack:9764kB pagetables:76964kB bounce:0kB free_pcp:228kB local_pcp:0kB free_cma:0kB
Aug 27 13:14:41 discovery kernel: lowmem_reserve[]: 0 0 0 0 0

In this case please consider increasing the RAM specs on the server and adding a SWAP partition or file:

https://support.plesk.com/hc/en-us/...of-SWAP-RAM-and-Disk-space-for-Plesk-Obsidian
https://support.plesk.com/hc/en-us/...-swap-is-required-on-Plesk-for-Linux-servers-

 

[xdelios]

Hello,

I saw something similar in the logs so I went on and change the settings a bit.
Still getting the same warning though.

 

[xdelios]

I keep having the same issue.
I have narrowed it down to this. It only happens for one subscription.
If I manually exclude this sub from the server backup by including the path then it will work just fine.
How could I repair that? Repairing file system changes nothing.