From: Neil Brown <neilb@suse.de>
To: Raz <raziebe@gmail.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Re-size RAID-10
Date: Fri, 27 Mar 2009 15:44:58 +1100 [thread overview]
Message-ID: <18892.22986.266806.170097@notabene.brown> (raw)
In-Reply-To: message from Raz on Thursday March 26
On Thursday March 26, raziebe@gmail.com wrote:
> Neil Hello
> I will be grateful for your reply. Currently I am working on raid0
> code reshape.
> 1. Will you be working on this functionality in the near future ?
I have no plans for raid0 reshape or raid10 reshape.
> 2. Should I save the superblocks like mdadm does in the case of 1,4,5,6 ?
When the layout changes, you certainly have to update the superblock,
yes.
> 3. What is the heuristics of strip_zones ? why do we need them ?
To make maximum use of available space.
>
> . non-power 2 raid0 chunk sizes.
> 4. Other than segments masks issues, why isn't possible ? can't i fix raid0
> to support 3MB chunks with a segment of 1MB ?
There is no intrinsic reason why chunk sizes should be powers of two.
When I started working on the code that limit already existed and I
have never had any reason to remove it.
If you would like to create patches which provide support for
non-power-of-two chunk sizes, I will be happy to review them.
NeilBrown
next prev parent reply other threads:[~2009-03-27 4:44 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-25 21:51 Re-size RAID-10 Daniel L. Miller
2009-03-25 22:14 ` Neil Brown
2009-03-26 7:40 ` Raz
2009-03-27 4:44 ` Neil Brown [this message]
2009-03-26 8:14 ` Keld Jørn Simonsen
2009-03-26 8:22 ` Raz
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