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If you see the “Rebuild Status:” percentage increasing, then things are looking up and you can try the same procedure on the other degraded raids.
If sdb3 reverts to faulty, then the drive may be defective. If you have the manufacturer’s diagnostic utility, then try testing the drive with it. If it fails that test, then it’s time to spend some money on a new drive.
My RAID1 had exactly the same problem (except it is an IDE setup). I followed the procedure to diagnose and fix it to the letter, and the drive is now rebuilding. Many thanks to WhatsHisName. I recently switched from Mandrake to Ubuntu, could that be the culprit?
i watch /proc/mdstat and see all are syncing well & the mirroring "[UU]" are all complete, i also try mdadm --query --detail /dev/md[0-5] and all tells "clean"..and it gives me a good night sleep, but the next morning my machine give a tons of error, after seeing the output mdstat some of my sdb fails again... what seems to be the problem??? i dont konw what to do next
Distribution: RHEL 4 and up, CentOS 5.x, Fedora Core 5 and up, Ubuntu 8 and up
Degraded Software RAID Array - RAID 5 CentOS 5.0
I have read over this post and I have received similar e-mails... so here is the e-mail I receive:
From email@example.com Sun Jun 29 18:50:17 2008
Date: Sun, 29 Jun 2008 18:50:12 -0600
From: mdadm monitoring <firstname.lastname@example.org>
Subject: DegradedArray event on /dev/md1:sandbox
This is an automatically generated mail message from mdadm
running on sandbox
A DegradedArray event had been detected on md device /dev/md1.
Faithfully yours, etc.
P.S. The /proc/mdstat file currently contains the following: