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Date: Mon, 9 Apr 2007 04:14:40 -0600 From: Andreas Dilger <adilger@...sterfs.com> To: Eric Sandeen <sandeen@...hat.com> Cc: Samuel Thibault <samuel.thibault@...-lyon.org>, linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: Add a norecovery option to ext3/4? On Apr 08, 2007 22:24 -0500, Eric Sandeen wrote: > Samuel Thibault wrote: > >Distribution installers usually try to probe OSes for building a suited > >grub menu. Unfortunately, mounting an ext3 partition, even in read-only > >mode, does perform some operations on the filesystem (log recovery). > >This is not a good idea since it may silently garbage data. > > Can you elaborate? Under what circumstances is log replay going to harm > data? Do you mean that the installer mounts partitions, looking for > what OS is installed? How is that harmful? If that disk was actually in use on another system but just exported via a SAN to this node you've potentially corrupted the filesystem. It's a bad idea to just go ahead and mount filesystems that you aren't told to mount. Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, 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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