Hardware: DNS 323 / 343 Degraded Array

Hardware: DNS 323 / 343 Degraded Array
That will not necessarily work. It is making several assumptions that may or may not be correct. Just
blindly adding a drive back without removing its superblock data can cause it to sync the wrong way
(I have seen this happen). It does appear from the report that the drive has been indeed removed, so
you need to first find out why. Shutting down incorrectly will not cause this. Normally a failed drive
will be shown as still in the array, but faulty. This shows removed -- not typical. Anyway run mount
and check to make sure the syatem did not mount that drive by itself. If it did, it will not add back until
after you unmount it. Once you know that it is not mounted, then run:
Code:
mdadm --zero-superblock /dev/sda2
This will remove the array information from that drive. Since you had a problem with it, I would
recommend reformatting it first, but it is up to you. To do that:
Code:
mke2fs -m 0 /dev/sda2
Then you can run the command to add it. Pleas not the correct syntax
Code:
mdadm /dev/md0 -a /dev/sda2
and immediately run
Code:
do_reboot
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Hardware: DNS 323 / 343 Degraded Array
This will reboot it and it will sync following that. You can also choose to allow sync to complese
before rebooting, but you may get an amber light which will go away after the reboot. Also, if you end
up having to reboot during the sync, it will begin from scratch after the reboot.
All this also assumes you have not moved your drives around, which can cause this type of issue.
Quelle: http://forum.dsmg600.info/t2595-(another)-Degraded-Array-Topic-with-mdadm%3F.html
Eindeutige ID: #1068
Verfasser: Stefan Pflug
Letzte Änderung der FAQ: 2009-03-30 22:03
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(c) 2017 ComputerCentrum Lübbecke GmbH <[email protected]> ¦ 2017-01-20 16:57
URL: http://faq.computercentrum.de/index.php?action=artikel&cat=22&id=69&artlang=de
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