[Linux-cluster] GFS and (missing) filesystem labels
Riaan van Niekerk
riaan at obsidian.co.za
Mon Sep 11 09:19:21 UTC 2006
Jos Vos wrote:
> It seems that you can not add a filesystem label to a GFS filesystem.
> Especially when using iSCSI, it would be handy to have a method to be
> sure that you mount the right SCSI device, in case the device name
> has changed due to a failure of another (i)SCSI device.
> Is there a good solution for this?
a) use LVM. it does not care what the underlying physical volume names
are, it will do the "right thing" w.r.t. volume groups and logical
b) your multipathing solution (e.g. EMC PowerPath with its persistent
mapping functionality of paths to for example /dev/emcpowera1) might
also solve this problem, if you want to avoid using LVM.
note - on SANs with multiple paths to the same LUN/partition, using
labels to mount does not work (you will get an error message about
duplicate labels), which is probably why the functionality is not there
to begin with, and probably will not be either.
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