From: Phillip Susi <psusi@ubuntu.com>
To: Pieter De Wit <pieter@insync.za.net>,
stan@hardwarefreak.com, linux-raid <linux-raid@vger.kernel.org>
Subject: Re: Is partition alignment needed for RAID partitions ?
Date: Thu, 02 Jan 2014 14:49:53 -0500 [thread overview]
Message-ID: <52C5C2E1.9060906@ubuntu.com> (raw)
In-Reply-To: <52C2184B.5030403@insync.za.net>
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On 12/30/2013 8:05 PM, Pieter De Wit wrote:
> 1) pvmove isn't as fast as I think - it might be due to some
> checksums or some other process (I know it creates a small mirror
> of a PE and then breaks it - rinse repeat for all PEs)
It doesn't actually work this way. The man page makes it sound like
it does ( though not for every individual PE -- it uses the nebulous
term "checkpoint" ), but it turns out that in practice, there's no
such thing and it just makes one big mirror to sync as many contiguous
PEs as it can. This can be rather annoying when you decide to reboot
85% of the way through a 1 TB pvmove and it starts over at the beginning.
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prev parent reply other threads:[~2014-01-02 19:49 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-29 21:04 Is partition alignment needed for RAID partitions ? Pieter De Wit
2013-12-30 6:56 ` Stan Hoeppner
2013-12-30 8:32 ` Pieter De Wit
2013-12-30 10:49 ` Stan Hoeppner
2013-12-30 12:10 ` Pieter De Wit
2013-12-30 17:10 ` Stan Hoeppner
2013-12-30 18:32 ` Pieter De Wit
2013-12-31 14:21 ` Stan Hoeppner
2013-12-31 1:05 ` Pieter De Wit
2013-12-31 14:38 ` Stan Hoeppner
2014-01-02 19:49 ` Phillip Susi [this message]
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