From mboxrd@z Thu Jan  1 00:00:00 1970
From: scar <scar-47zfDnpWZoPQT0dZR+AlfA@public.gmane.org>
Subject: Re: moving spares into group and checking spares
Date: Tue, 27 Sep 2016 17:19:03 -0700
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Chris Murphy wrote on 09/14/2016 08:51 PM:
> On Wed, Sep 14, 2016 at 9:42 PM, scar <scar-47zfDnpWZoPQT0dZR+AlfA@public.gmane.org> 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?
>

No it is 512K, and the sector reported by libata is almost 2000 sectors 
different than what mdadm reported


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