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Message-id: <9F53CAF8-B6B4-40EB-89FA-CD6779D17DBE@sun.com> Date: Thu, 18 Feb 2010 14:41:45 -0700 From: Andreas Dilger <adilger@....com> To: PiX <pix@...life.org> Cc: linux-fsdevel@...r.kernel.org, ext4 development <linux-ext4@...r.kernel.org> Subject: Re: [ext3] Changes to block device after an ext3 mount point has been remounted readonly On 2010-02-18, at 09:45, PiX wrote: > I'm experiencing a strange behavior. After having remounted / to > readonly, I'm doing a sha1sum on /dev/sda1 (which is mounted on /) > Then, I reboot, GRUB starts the kernel with the ro option, when I do a > hash of /dev/sda1 the sum has changed. Are you sure this isn't because e2fsck has been run at boot time and changed e.g. the "last checked" timestamp in the superblock? > This only happen when the rootfs hash been mounted ro, then remounted > rw to make some changes and remounted ro. > On the next reboot the hash will change, but only one time. Next > reboots will not alter the control sum, until of course I remount it > RW. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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