From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: mdadm 2.6.x regression, fails creation of raid1 w/ v1.0 sb and internal bitmap Date: Fri, 19 Oct 2007 12:41:41 +1000 Message-ID: <18200.6501.186871.539817@notabene.brown> References: <170fa0d20710170837g1b0cd549w3b7fe8e663a01b7e@mail.gmail.com> <4716769E.5030508@tmr.com> <170fa0d20710171421l4ff62ebdwdef307e71a2ad30d@mail.gmail.com> <471754D8.2060909@tmr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: message from Bill Davidsen on Thursday October 18 Sender: linux-raid-owner@vger.kernel.org To: Bill Davidsen Cc: Mike Snitzer , linux-raid@vger.kernel.org List-Id: linux-raid.ids On Thursday October 18, davidsen@tmr.com wrote: > > Unless there's a substantial benefit from using the 1.0 format, you > might want to go with something which works. I am every grateful to the many people who do not just find work arounds, but report problems and persist until they get fixed. Obviously everyone should choose the path that suits them best, but I'd rather we didn't discourage people who are working to get a bug fixed. > I would suggest using > --bitmap-chunk, but the man page claims it doesn't apply to internal > bitmaps. It also claims the bitmap size is chosen automatically to best > use available space, but "doesn't work" seems an exception to "best > use." ;-) In this case, it does work, and it is best use. It just appears that the 'available space' is not truly available - read error. NeilBrown