From: Shaochun Wang <scwang@ios.ac.cn>
To: linux-raid@vger.kernel.org
Subject: Re: RAID5 write hole?
Date: Tue, 29 Jun 2010 21:28:16 +0800 [thread overview]
Message-ID: <20100629132816.GA1705@localhost> (raw)
In-Reply-To: <alpine.DEB.1.10.1006290822470.8623@uplift.swm.pp.se>
On Tue, Jun 29, 2010 at 08:23:35AM +0200, Mikael Abrahamsson wrote:
> On Tue, 29 Jun 2010, Shaochun Wang wrote:
>
> $ cat /proc/mdstat | grep bitmap
> bitmap: 0/8 pages [0KB], 131072KB chunk
>
> If you don't get any bitmap information in there, it's not enabled.
It seems that I do not have write-intent bitmap enabled. If
write-intent bitmap is useful, why is it not the default one?
--
Shaochun Wang <scwang@ios.ac.cn>
Jabber: fungusw@jabber.org
prev parent reply other threads:[~2010-06-29 13:28 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-26 14:31 RAID5 write hole? Shaochun Wang
2010-06-26 15:42 ` Mikael Abrahamsson
2010-06-26 21:28 ` Shaochun Wang
2010-06-27 10:33 ` John Hendrikx
2010-06-27 12:16 ` Neil Brown
2010-06-29 6:16 ` Shaochun Wang
2010-06-29 6:23 ` Mikael Abrahamsson
2010-06-29 13:28 ` Shaochun Wang [this message]
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