Thread (1 message) 1 message, 1 author, 2008-12-09

Re: Data integrity and RAID

From: Justin Piszcz <hidden>
Date: 2008-12-09 23:33:04

What kind of disks? Does it go away after a 'repair'?
Show smartctl -a of both disks in the raid?

On Tue, 9 Dec 2008, Ryan Wagoner wrote:
My swap is on a different RAID 1, but my other RAID 1 with the root
partition was showing inconsistencies as well. It does it on both my
servers.

Ryan

On Tue, Dec 9, 2008 at 11:28 AM, Justin Piszcz [off-list ref] wrote:
quoted

On Tue, 9 Dec 2008, Ryan Wagoner wrote:
quoted
The issue I've had with RAID 1 using mdadm is the disk's aren't
consistent. I've noticed that unlike RAID 5 when a write is aborted
mdadm doesn't completely write the data.

When I run a check on the RAID 1 I always have inconsistencies where I
have never had one on a RAID 5. The issue here is you never know if
the inconsistencies can be ignored or are signs of a failing disk,
etc.

I sent an email to the list previously on this with no response.

http://marc.info/?l=linux-raid&m=122572326107399&w=2
I have asked about this before as well, do you have your swap on raid1? I
recall someone replying that it was normal if that is the case.

Justin.
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