Messages in this thread | | | Date | Mon, 9 Apr 2007 04:14:40 -0600 | From | Andreas Dilger <> | Subject | Re: Add a norecovery option to ext3/4? |
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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.
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