Hi! I'd like to drop a small note on "mdadm .. --replace .. --with .." (new command to replace a specific disk with a hot spare without loosing redundancy) In SLES11SP4 that command doesn't work (always gives: "mdadm: Failed to request replacement for ..")
The relevant part of the strace suggests that the kernel does not have the required feature: [...] open("/sys/block/md20/md/dev-dm-12/state", O_WRONLY) = 5 write(5, "want_replacement", 16) = -1 EINVAL (Invalid argument) close(5) = 0 write(2, "mdadm: Failed to request replace"..., 52mdadm: Failed to request replacement for /dev/dm-12 ) = 52 [...] Maybe I should also remark that I had created a support call on this. It seems the problem won't be fixed; instead it's recommended not to use the command above (instead to this: first fail one disk, then remove it from the RAID, then add another disk). The feature should work in openSUSE 13.2, however. Regards, Ulrich _______________________________________________ Users mailing list: Users@clusterlabs.org http://clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org