From mboxrd@z Thu Jan  1 00:00:00 1970
From: Chris Murphy <lists@colorremedies.com>
Subject: Re: moving spares into group and checking spares
Date: Wed, 14 Sep 2016 21:51:30 -0600
Message-ID: <CAJCQCtRW9REafzmyk+W6aVxqxMUWCdXNkrST1e7udrH-zp26Uw@mail.gmail.com>
References: <nramjg$n07$1@blaine.gmane.org> <20160914092959.GA3584@metamorpher.de>
 <nrc2pm$2a9$1@blaine.gmane.org> <20160914232249.6e5fc568@natsu>
 <nrce27$2km$1@blaine.gmane.org> <CAJCQCtQJwOTYsWubd0rV-6PRL4kmVRKLfLr3=7ZPr1Zb3SrwtQ@mail.gmail.com>
 <nrckp2$k8e$1@blaine.gmane.org> <CAJCQCtQ1GHdQtShbW3U1o-fmXhT3fHrC7S9BxsxrrOG=0H_p3A@mail.gmail.com>
 <nrd5ak$e8c$1@blaine.gmane.org>
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To: scar <scar@drigon.com>
Cc: Linux-RAID <linux-raid@vger.kernel.org>
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On Wed, Sep 14, 2016 at 9:42 PM, scar <scar@drigon.com> wrote:

> 00 80 00
> Sep 12 08:05:34 hind kernel: [1350051.023847] end_request: critical medium
> error, dev sdk, sector 598457896
> Sep 12 08:05:35 hind kernel: [1350051.385810] md/raid:md0: read error
> corrected (8 sectors at 598455848 on sdk1)
> Sep 12 08:05:35 hind kernel: [1350051.385826] md/raid:md0: read error
> corrected (8 sectors at 598455856 on sdk1)
> Sep 12 08:05:35 hind kernel: [1350051.385834] md/raid:md0: read error
> corrected (8 sectors at 598455864 on sdk1)
> Sep 12 08:05:35 hind kernel: [1350051.385840] md/raid:md0: read error
> corrected (8 sectors at 598455872 on sdk1)
> Sep 12 08:05:35 hind kernel: [1350051.385847] md/raid:md0: read error
> corrected (8 sectors at 598455880 on sdk1)
> Sep 12 08:05:35 hind kernel: [1350051.385853] md/raid:md0: read error
> corrected (8 sectors at 598455888 on sdk1)
> Sep 12 08:05:35 hind kernel: [1350051.385859] md/raid:md0: read error
> corrected (8 sectors at 598455896 on sdk1)
> Sep 12 08:05:35 hind kernel: [1350051.385865] md/raid:md0: read error
> corrected (8 sectors at 598455904 on sdk1)
> Sep 12 08:05:35 hind kernel: [1350051.385873] md/raid:md0: read error
> corrected (8 sectors at 598455912 on sdk1)
> Sep 12 08:05:35 hind kernel: [1350051.385880] md/raid:md0: read error
> corrected (8 sectors at 598455920 on sdk1)
> Sep 12 13:39:43 hind kernel: [1370087.022160] md: md0: data-check done.
>
>
> so it seems to be working?  although the sector reported by libata is
> different than what md corrected

Looks like it replaced the entire chunk that includes the bad sector.
Is the chunk size 32KiB?


-- 
Chris Murphy