[Linux-cluster] gfs over raid/lvm or any other option?

Ferenc Wagner wferi at niif.hu
Fri Aug 22 17:12:49 UTC 2008

Alex <linux at vfemail.net> writes:

> If on one machine i have 8 block devices (/deb/sda, /dev/sdb, ... /dev/sdg, 
> dev/sdh) imported via iscsi from 8 different computers (computerX) can i 
> group volumes two by two using raid1 and after that to join resulted /dev/md0 
> up to md3 in one logical volume and run GFS on top?

You can aggregate iSCSI devices by mdadm only on one node at a time.
That is, the Linux software RAID is not cluster aware.  You can use it
in HA, though.  For what you want, check out ddraid or distributed
file systems like Coda or Lustre.

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