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Message-id: <20080306071734.GN3616@webber.adilger.int> Date: Thu, 06 Mar 2008 00:17:34 -0700 From: Andreas Dilger <adilger@....com> To: Duane Griffin <duaneg@...da.com> Cc: linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org, Theodore Tso <tytso@....edu>, sct@...hat.com, akpm@...ux-foundation.org Subject: Re: [RFC, PATCH 6/6] ext3: do not write to the disk when mounting a dirty read-only filesystem On Mar 06, 2008 01:59 +0000, Duane Griffin wrote: > NOTE: For now I'm simply preventing filesystems requiring recovery from being > remounted read-write. This breaks booting with an uncleanly mounted root > filesystem! I was going to ask about this - not being able to remount rw is a serious problem because many users have only the root filesystem and this limitation basically prevents this patch from being landable. I'd suggest if the filesystem is going to be remounted read/write that the journal mapping be discarded and the journal replayed. Depending on how you do the mapping it may be necessary to invalidate all of the pages in the cache so that they don't reference the blocks in the journal. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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