From: Roy Sigurd Karlsbakk <roy@karlsbakk.net>
To: Robin Hill <robin@robinhill.me.uk>
Cc: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: raid-5 initiated as raid-4?
Date: Thu, 7 Feb 2013 19:32:29 +0100 (CET) [thread overview]
Message-ID: <23526154.30.1360261949571.JavaMail.root@zimbra> (raw)
In-Reply-To: <23689346.18.1360259772196.JavaMail.root@zimbra>
> ok, so do I understand correctly that the initial raid-5 build only
> writes data/parity to a single drive (the 'replacement')? Doing some
> more testing now to see what I can find…
Now, this is interesting. Initiating a raid-5 will create parity blocks (and perhaps data blocks) for the other drives, growing it will recreate parity for them all, which is normal. now, creating an empty raid-6 takes merely second, on the same (virtual) drive size (only more drives). What does the raid-6 code do that the raid-5 code could (or should?) have done?
Vennlige hilsener / Best regards
roy
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prev parent reply other threads:[~2013-02-07 18:32 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-07 17:08 raid-5 initiated as raid-4? Roy Sigurd Karlsbakk
2013-02-07 17:53 ` Robin Hill
2013-02-07 17:56 ` Roy Sigurd Karlsbakk
2013-02-07 18:32 ` Roy Sigurd Karlsbakk [this message]
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