Red Hat Bugzilla – Bug 5063
raidtools do not inform user the they >must< use "persistent-superblock 1" in their raids
Last modified: 2008-05-01 11:37:51 EDT
Since raidadd/raidrun have been replaced with raidstart
and raidstart lacks some of the functionality of starting
raid devices, the user must use "persistent-superblock 1"
for each raid device, or when the raid is stopped,
raidstart will not start it.
All the /etc/raidtab is fine, but without this option in
each raiddev stanze, if you raidstop the device, the
next time I try to raidstart it, I messages in
/var/log/messages of the type:
kernel: (read) sdc1's sb offset: 8883840 [events: ea5fe76b]
kernel: md: invalid raid superblock magic on sdc1
kernel: md: sdc1 has invalid sb, not importing!
kernel: could not import sdc1!
kernel: autostart sdc1 failed!
Simply adding the persistant-superblock removes this
problem. Without it, the first time you reboot, you lose
It would be nice if this were documented as a "must do",
and if it were mentioned in all the sample raidtabs in
/usr/doc/raidtools-0.90, not just raid0.conf.sample in
This is fixed now.