From: Roy Sigurd Karlsbakk <roy@karlsbakk.net>
To: Robin Hill <robin@robinhill.me.uk>
Cc: linux-raid@vger.kernel.org, Robin Dong <robin.k.dong@gmail.com>
Subject: Re: Question about resync in RAID5
Date: Tue, 16 Apr 2013 17:46:07 +0200 (CEST) [thread overview]
Message-ID: <4915289.2.1366127167165.JavaMail.root@zimbra> (raw)
In-Reply-To: <20130416102452.GC25795@cthulhu.home.robinhill.me.uk>
> > Is there any method to just resync WRITTEN data to new-added-disk ?
> > Or any developing plan to add this feature?
>
> No, because md is a block device it has no knowledge of what data has
> actually been written to the disk or where it is stored. This means it
> has to rebuild the entire disk.
>
> There are plans to improve this by keeping track of which stripes have
> been written to, which should help (and will also mean no need for an
> initial RAID sync). I don't know whether this has progressed beyond
> the idea stage yet though.
Interesting - do you have any docs about this? I haven't seen any talk on this list about it...
Vennlige hilsener / Best regards
roy
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Roy Sigurd Karlsbakk
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I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilfeller eksisterer adekvate og relevante synonymer på norsk.
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next prev parent reply other threads:[~2013-04-16 15:46 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-16 10:02 Question about resync in RAID5 Robin Dong
2013-04-16 10:24 ` Robin Hill
2013-04-16 15:46 ` Roy Sigurd Karlsbakk [this message]
2013-04-16 16:55 ` Robin Hill
[not found] ` <CANsebLH0PcjV2nmcQ0TmEE_8XxF6pi53baSenV3qKwdRxioK+Q@mail.gmail.com>
2013-04-22 0:15 ` NeilBrown
2013-04-22 9:16 ` Goswin von Brederlow
-- strict thread matches above, loose matches on Subject: below --
2013-04-16 9:59 Robin Dong
2013-04-15 20:27 ` Oliver Schinagl
2013-04-16 15:20 ` Keith Keller
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