Messages in this thread | | | From | Andreas Dilger <> | Date | Wed, 26 Sep 2001 22:29:06 -0600 | Subject | Re: swsusp: move resume before mounting root [diff against vanilla 2.4.9] |
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On Sep 26, 2001 23:02 -0400, Albert D. Cahalan wrote: > That is totally broken, because I may mount the disk in between > the suspend and resume. I might even: > > 1. boot kernel X > 2. suspend kernel X > 3. boot kernel Y > 4. suspend kernel Y > 5. resume kernel X > 6. suspend kernel X > 7. resume kernel Y > 8. suspend kernel Y > 9. goto #5 > > You really have to close the logs and mark the disks clean > when you suspend. The problems here are similar the the ones > NFS faces. Between the suspend and resume, filesystems may be > modified in arbitrary ways.
This is possible with the "write_super_lockfs" interface to the journaling filesystems (ext3/reiserfs/XFS). This is normally used for LVM snapshots, but it could also be used for this.
Cheers, Andreas -- Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto, \ would they cancel out, leaving him still hungry?" http://www-mddsp.enel.ucalgary.ca/People/adilger/ -- Dogbert
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