On Mon, 28 Apr 2008, Luke Sheldrick wrote:
To: "linux-raid@xxxxxxxxxxxxxxx" <linux-raid@xxxxxxxxxxxxxxx>
From: Luke Sheldrick <luke@xxxxxxxxxxxxxxx>
Subject: RE: mdadm crashing server?
From the Linux software raid howto: It is not recommended to
run the same RAID1 array on the same IDE cable as
master/slave. In fact the howto recommends 1 drive set as
master on one cable only. One reason being if your master
drive goes down, then the slave may not operate correctly.
I was think it probably wasn't a good idea.
I changed over one of the disc's from the array, to sit on
the secondary IDE. It seems to now die at 1% and reset the
sync (not killing the machine this time however)
*snip*
hex): Apr 28 09:27:09 nas kernel: 72 03 11 04 00 00 00 0c
00 0a 80 00 00 00 00 00 Apr 28 09:27:09 nas kernel: 00 94
61 80 Apr 28 09:27:09 nas kernel: sd 3:0:1:0: [sdf] Add.
Sense: Unrecovered read error - auto reallocate failed Apr
28 09:27:09 nas kernel: end_request: I/O error, dev sdf,
sector 9724288 Apr 28 09:27:09 nas kernel: ata4: EH
complete Apr 28 09:27:09 nas kernel: raid1: sdf:
unrecoverable I/O read error for block 9722240 Apr 28
Maybe you need to run smartmontools on the disk.
I think auto reallocate failure is a smart disk attribute.
Also the disks seem to be running at different DMA speeds.
Do they need setting to the same speeds or not?
Kind Regards
Keith Roberts
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