Re: Hints on reducing kickouts

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Hello,

mdadm --grow /dev/md2 --bitmap=internal
mdadm: failed to set internal bitmap.

I then tried it on md1 and this crashed my machine. (bitmap_endwrite
<- handle_stripe)
hmm.

I don't know what to do.

-- John

2012/3/3 Bryan Mesich <bryan.mesich@xxxxxxxx>:
> On Sat, Mar 03, 2012 at 10:28:20PM +0100, John Obaterspok wrote:
>> Please see below for errors I get when trying to add internal bitmap.
>
> [snip...]
>
>> okay, I'm trying to add an interal bitmap to see how much it slows down things:
>>
>> [root@Emperor ~]# mdadm --version
>> mdadm - v3.2.3 - 23rd December 2011
>>
>>
>> [root@Emperor ~]# mdadm --grow --bitmap=internal /dev/md2
>> mdadm: failed to set internal bitmap.
>
> I think you are using the wrong cmd line syntax.  Try the
> following for adding an internal bitmap to /dev/md2
>
> mdadm --grow /dev/md2 --bitmap=internal
>
> If you want to use an external bitmap, use --bitmap="path to
> file".
>
>> [root@Emperor ~]# mdadm --examine-bitmap /dev/md2
>>         Filename : /dev/md2
>>            Magic : 00000000
>> mdadm: invalid bitmap magic 0x0, the bitmap file appears to be corrupted
>>          Version : 0
>> mdadm: unknown bitmap version 0, either the bitmap file is corrupted
>> or you need to upgrade your tools
>>
>
> [snip...]
>
> Bryan
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