From: "Peter Sangas" <pete@wnsdev.com>
To: linux-raid@vger.kernel.org
Subject: 2 disk RAID1 need to replace a disk logging errors (use replace?)
Date: Wed, 8 Nov 2017 10:39:22 -0800 [thread overview]
Message-ID: <004c01d358c0$e5ea50a0$b1bef1e0$@wnsdev.com> (raw)
Hi,
I have a 2 disk RAID1 and one of the disks is logging errors. Array is still redundant. I read the Wiki, this lists postings and the mdadm man page and I believe it’s advised to perform a “–-replace” rather than a “fail/remove” in order to preserve redundancy but would be happy if someone can confirm before I do it.
To replace sdb with a sdc I run the following for each mdx???
mdadm /dev/md0 --add /dev/sdc1 --replace /dev/sdb1 --with /dev/sdc1
--------------------
mdadm - v3.3 - 3rd September 2013
cat /proc/mdstat
Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10]
md1 : active raid1 sda2[0] sdb2[2]
14640128 blocks super 1.2 [2/2] [UU]
md0 : active raid1 sda1[0] sdb1[2]
19514368 blocks super 1.2 [2/2] [UU]
md2 : active raid1 sdb3[2] sda3[0]
454074368 blocks super 1.2 [2/2] [UU]
bitmap: 1/4 pages [4KB], 65536KB chunk
Thanks,
Pete
reply other threads:[~2017-11-08 18:39 UTC|newest]
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