From: Neil Brown <neilb@suse.com>
To: "Rainer Fügenstein" <rfu@oudeis.org>
Cc: Linux-RAID <linux-raid@vger.kernel.org>
Subject: Re: performance issue
Date: Tue, 03 Nov 2015 12:34:25 +1100 [thread overview]
Message-ID: <8737wnkgri.fsf@notabene.neil.brown.name> (raw)
In-Reply-To: <5637E9C9.70600@oudeis.org>
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On Tue, Nov 03 2015, Rainer Fügenstein wrote:
> On 25.10.2015 21:08, Neil Brown wrote:
>> mdadm --grow /dev/md0 --bitmap=intermnal --bitmap-chunk=256
>
> not sure how to specify the chunks size:
>
> [root@alfred ~]# mdadm --grow /dev/md0 --bitmap=internal --bitmap-chunk=256
> mdadm: failed to create internal bitmap - chunksize problem.
> [root@alfred ~]# mdadm --grow /dev/md0 --bitmap=internal --bitmap-chunk=256M
> mdadm: invalid bitmap chunksize: 256M
I guess you have an mdadm version earlier than 3.2
try
--bitmap-chunk=262144
which is 256*1024. The number is in K.
NeilBrown
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prev parent reply other threads:[~2015-11-03 1:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-15 13:38 kernel: BUG: soft lockup - CPU#1 stuck for 60s! [md0_raid5:1614] Rainer Fügenstein
2015-10-16 1:15 ` Neil Brown
2015-10-16 19:31 ` Rainer Fügenstein
2015-10-24 16:15 ` performance issue (was: Re: kernel: BUG: soft lockup - CPU#1 stuck for 60s!) Rainer Fügenstein
2015-10-24 16:31 ` Roman Mamedov
2015-10-25 19:23 ` Rainer Fügenstein
2015-10-25 20:08 ` Neil Brown
2015-10-25 20:32 ` Rainer Fügenstein
2015-10-25 21:10 ` Neil Brown
2015-11-02 22:55 ` performance issue Rainer Fügenstein
2015-11-03 1:34 ` Neil Brown [this message]
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