Re: Hi! Strange issue with LSR -- bitmaps hadn't been used during 2 of 3 RAIDs resync

[Igor M Podlesny <for.poige+lsr@xxxxxxxxx>]

On 28 May 2012 12:03, Igor M Podlesny <for.poige+lsr@xxxxxxxxx> wrote:
> On 28 May 2012 10:54, NeilBrown <neilb@xxxxxxx> wrote:
> [...]
>> The best indicator is total time that it takes (which can probably be
>> extracted from logs as start and end are logged).  Divide that into size of a
>> device to get average MB/sec.  If the bitmap was used, that will normally be
>> much less the best throughput of the device.
>
>   That's exactly why I am stating it didn't use WIBs 2 times of 3. It
> went resyncing from beginning till the end -- I had my finger on its
> pulse. :)
>
>   I can't promise (due to popular "lack of time" disease, yeah), but
> if I'll get on it using VirtualBox or real environment [Lord forbid
> :)] once again, I'll let you know, sure.

   Here it is: http://pastie.org/4118133

   — 3.4.2-rt10 went suspend ok for 2 times, the 3rd it didn't.
Reboot, resync, no bitmaps use.

   And, BTW, it's rather slow in despite of having max. stripe_cache_size set.

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