> 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. Is the CentOS you are running a 64 bit one? The reason I am asking this is because the use of XFS under a 32 bit OS is NOT recommended. If you search this list's archives you will find some discussion about this subject.