I heard that, in case of a power failure, XFS may lose data, even data
that was already existing on the disk. For example, I heard horror
stories of files being overwritten with zeros.
Are those stories true?
* Do you recommend not using XFS on devices that may frequently fail due
to power failure?
* Is it possible to find out what files have been damaged? If not,
will only files be affected that have been changed during the last
couple of hours?
* Are there options to increase data safety? Should one run a regular
"sync" in a cron job?
* Is it unsafe to use XFS in a virtual machine which may sometimes be
terminated without proper shutdown? Suppose the virtual machine is
running under Windows, and Windows may sometimes be terminated without
I currently am using XFS under Ubuntu 7.10 (Kernel 2.6.22), running in a
virtual machine (VMware) under Windows. The XFS file system is in a
native partition on a second HDD.
Felix E. Klee
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