A few warnings for folks running RHEL4/GFS on HP BL25p blades:
- update your firmware to the latest version on BL25p blades, or
kernel 2.6.9-34.0.1smp (x86_64) will hang on boot (this is GFS/cluster
unrelated)
- if you update one member of the cluster with the new fenced and
reboot it (with other members being on with old fenced), once the new
member comes back, others will go all weird and drop out of the
cluster, followed by a panic on OOPS if you try to reboot them; the
cluster won't work that way at all; best do them all at once (i.e.
schedule downtime)
I found out the hard way... (i.e. nothing in fenced release notes about this).
--
Bojan
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