Checking mounted fs

[Jan Strohbehn <j.strohbehn@xxxxxxxxxx>]

Hi !!

I have a SAN with two servers and one disk with an xfs.
They are connected over heartbeat, so that the second server performs a 
failover, if the first fails.
My question is, can I run a  "xfs_check /dev/.. || xfs_repair /dev/.." 
before mounting the disk (during a takeover), or will I run into 
additional problems, if the xfs is (accidently) still mounted etc. ??
(It just happened, that the takeover failed because of a corrupted xfs.)

Thanks,
Jan