Gentoo Archives: gentoo-user

From: Michael Orlitzky <michael@××××××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Problem with RAID1
Date: Thu, 19 Apr 2012 18:57:19
Message-Id: 4F905F67.2090803@orlitzky.com
In Reply to: [gentoo-user] Problem with RAID1 by Mike Diehl
1 On 04/19/12 14:20, Mike Diehl wrote:
2 >
3 > My question is, "which one?" Usually I get a [UU] on a good RAID, and an _
4 > for the failed drive. That would indicate that sda3 has failed. However,
5 > sdb3 is marked with an (F), which I've never seen before.
6 >
7 > Which drive should I replace?
8
9 You can use smartctl to pull the S/N off the drive.
10
11 backup2 ~ # smartctl -i /dev/sda
12 smartctl 5.42 2011-10-20 r3458 [x86_64-linux-3.2.2-hardened-r1]
13 (local build)
14 Copyright (C) 2002-11 by Bruce Allen,
15 http://smartmontools.sourceforge.net
16
17 === START OF INFORMATION SECTION ===
18 Model Family: Western Digital Caviar Blue Serial ATA
19 Device Model: WDC WD2500AAKS-61L9A0
20 Serial Number: WD-WMAV2JE70517
21 ...
22
23
24 > Also, why did I get an I/O error? Shouldn't my RAID have just failed over
25 > silently?
26
27 Short answer: lots of things can go wrong. It might be as simple as
28 removing the failing drive from the array. But it doesn't matter, back
29 up the un-failed disk right now if there's anything important on it.
30 *Then* play around to get the array working again.