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Re: xfs i/O error

To: Michael Monnerie <michael.monnerie@xxxxxxxxxxxxxxxxxxx>
Subject: Re: xfs i/O error
From: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Thu, 30 Jul 2009 22:37:53 -0500
Cc: xfs@xxxxxxxxxxx, rnb <neil.bell@xxxxxxxxx>
In-reply-to: <200907310148.52085@xxxxxx>
References: <24747808.post@xxxxxxxxxxxxxxx> <200907310148.52085@xxxxxx>
User-agent: Thunderbird 2.0.0.22 (Macintosh/20090605)
Michael Monnerie wrote:
> On Donnerstag 30 Juli 2009 rnb wrote:
>> [70273.864305] sd 8:0:0:0: [sdg] Sense Key : Medium Error [current]
>> [70273.864314] Info fld=0x0
>> [70273.864318] sd 8:0:0:0: [sdg] Add. Sense: Unrecovered read error
>> [70273.864327] end_request: I/O error, dev sdg, sector 378206415
> 
> Disk is bad, replace it.
> 
> mfg zmi

More or less, yep.

Read errors can be somewhat recoverable, if you write to that sector it
will remap if it can.

But anyway yeah, it's not an xfs I/O error, it's a disk IO error, and
xfs is bringing you the bad news.

repair may not have seen it because repair only looks at metadata, bad
sectors may be data in blocks, found when you try to copy data around.

-eric

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