From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bill Davidsen Subject: Re: Any benefity to write intent bitmaps on Raid1 Date: Sat, 11 Apr 2009 09:08:39 -0400 Message-ID: <49E09657.4020809@tmr.com> References: <45635.60.234.49.2.1239236645.squirrel@webmail.stevencherie.net> <18909.36541.447308.778177@notabene.brown> <87myaqfily.fsf@frosties.localdomain> <18911.2963.478861.845896@notabene.brown> <87y6u7sxsi.fsf@frosties.localdomain> <18912.11285.266605.223182@notabene.brown> <877i1rpogf.fsf@frosties.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <877i1rpogf.fsf@frosties.localdomain> Sender: linux-raid-owner@vger.kernel.org To: Goswin von Brederlow Cc: Neil Brown , Steven Ellis , Linux RAID List-Id: linux-raid.ids Goswin von Brederlow wrote: > Neil Brown writes: > > >> You could make it work, but there would be a performance hit. >> >> Now look at your cases where a filesystem doesn't work well: >> 1/ Swap. That is a non-issue. After a crash, the contents of swap >> are irrelevant. Without a crash, the races you refer to are >> irrelevant. >> > > What about suspend to swap? > suspend is a "without a crash" case, I wouldn't want to restore from swap if the system failed to complete a clean shutdown. -- bill davidsen CTO TMR Associates, Inc "You are disgraced professional losers. And by the way, give us our money back." - Representative Earl Pomeroy, Democrat of North Dakota on the A.I.G. executives who were paid bonuses after a federal bailout.