From mboxrd@z Thu Jan 1 00:00:00 1970 From: Phillip Susi Subject: Re: Is partition alignment needed for RAID partitions ? Date: Thu, 02 Jan 2014 14:49:53 -0500 Message-ID: <52C5C2E1.9060906@ubuntu.com> References: <52C08E63.8020800@insync.za.net> <52C11929.3070600@hardwarefreak.com> <52C12F8B.6080507@insync.za.net> <52C14FB8.8080005@hardwarefreak.com> <52C162A7.1080309@insync.za.net> <52C1A8F0.2030208@hardwarefreak.com> <52C2184B.5030403@insync.za.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <52C2184B.5030403@insync.za.net> Sender: linux-raid-owner@vger.kernel.org To: Pieter De Wit , stan@hardwarefreak.com, linux-raid List-Id: linux-raid.ids -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 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. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJSxcLhAAoJEI5FoCIzSKrw4N8H/i5M74R1CJQTbptxE5lBelLP /ESQb/zKIDD4eEodmg4oowh260trV6u91+WBbPYcZVtQ1bPK/4kMkuH8pRVKpnvw nQghIjKGyaPAfzGHpHxyqM/xibIwHl3doTM+Ld17jjilyYVfv/QcERn9QjYSG2pM Isl3H+C51BMQcOPdCHUeNml5mqBxA6QB3eYkSXvtKVkbBRs1r+nOJObizwrRld5B gFDGRmEbi40GpROCbxFPDZPqpz5wKygf+/PFm1VHt1Hsiib5rndabcsJdB9H8SqK PDw33Qa7GRTkpWdXRhDnxJq3uXNXnF74IGtTPYS2eTZL+ljORgMq24BMo5bPLl8= =HgAd -----END PGP SIGNATURE-----