I have a Solaris Volume Manager (aka Disksuite) RAID 1+0 device consisting of 12 devices. One of these is failing (it has logged several mechanical positioning errors), and I have a replacement disk.
Normally, when a disk fails, volume manager marks it as failed, and replacing it is fairly easy. I would just unconfigure the disk (cfgadm -c unconfigure), replace it, reconfigure the disk, run devfsadm, partition the disk, and then use metareplace to replace it in volume manager.
However, in this case the disk has not actually failed, and is still being written to. How do I tell volume manager to stop using the disk? The only commands I know (metadetatch and metaoffline) will disable the whole d91 submirror (AFAIK), not just this device.
Here is the metadevice in question:
So, how do I replace c4t8d0s0, but still continue using all the other disks during the replacement? I want to use the same slot, so I have to pull the old disk out first.
(Note: Solaris Volume Manager makes this look like a RAID 0+1, but my understanding is this is really a RAID 1+0 as explained here)
Good point - the meta device driver must know that the disk has failed.
The safest method is to simply pull out the physical disk,
and read from that metadevice until metastat shows that the device has failed.
Then insert the new physical disk, and run
in your case ---------- Post updated at 05:24 AM ---------- Previous update was at 05:22 AM ----------
Please first check with
If the failed device has got a metadb, it must be recreated before a metareplace.
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