Thread (11 messages) 11 messages, 3 authors, 2014-01-02

Re: Is partition alignment needed for RAID partitions ?

From: Phillip Susi <hidden>
Date: 2014-01-02 19:49:53

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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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