From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Robinson Subject: Re: bitmap questions Date: Thu, 14 Oct 2010 13:11:10 +0100 Message-ID: <4CB6F35E.6040307@anonymous.org.uk> References: <201010131824.53363.a.miskiewicz@gmail.com> <201010140800.38419.a.miskiewicz@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <201010140800.38419.a.miskiewicz@gmail.com> Sender: linux-raid-owner@vger.kernel.org To: Arkadiusz Miskiewicz Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 14/10/2010 07:00, Arkadiusz Miskiewicz wrote: [...] > So there is no way to know in advance how much is going to be resynced when > sudden reset would happen in that moment? Only in the general sense that there's a limit to how many chunks could have been dirtied in whatever period your kernel will hang on to stuff before insisting on flushing it. I think that defaults to 5 seconds, so you'd have to have a pathological workload to dirty so many chunks the resync might take more than a minute. Cheers, John.