[CentOS] weird XFS problem
Joseph L. Casale
jcasale at activenetwerx.com
Sun Jan 22 19:56:16 UTC 2012
>I have a CentOS 5.7 machine hosting a 16 TB XFS partition used to house
>backups. The backups are run via rsync/rsnapshot and are large in terms of
>the number of files: over 10 million each.
>Now the machine is not particularly powerful: it is 64-bit machine, dual
>core CPU, 3 GB RAM. So perhaps this is a factor in why I am having the
>following problem: once in awhile that XFS partition starts generating
>multiple I/O errors, files that had content become 0 byte, directories
>disappear, etc. Every time a reboot fixes that, however. So far I've looked
>at logs but could not find a cause of precipitating event.
>Hence the question: has anyone experienced anything along those lines? What
>could be the cause of this?
In every situation like this that I have seen, it was hardware that never had
adequate memory provisioned.
Another consideration is you almost certainly wont be able to run a repair on that
fs with so little ram.
Finally, it would be interesting to know how you architected the storage hardware.
Hardware raid, BBC, drive cache status, barrier status etc...
More information about the CentOS