On Mon, Feb 20, 2012 at 10:35:27AM -0500, Phillip Susi wrote: > > I've noticed that e2image doesn't get the backup superblocks and group > descriptors. Is this intentional or an oversight? It's deliberate. I suppose it might be useful if you are using e2image -r to make a copy of a corrupted file system, where the primary superblocks are corrupted. It's probably reasonable to save a copy of the first backup superblock just so that e2fsck run on the raw image mimicks what you'd see if you were running on the same file system. I'd accept a patch to do this. > Is there a way to resync the backups from the master copy? e2fsck > doesn't seem to do it. Why do you want to do this? In general the tools will automatically sync the backups from the master if it is necessary (i.e., in the case of a file system resize, or if there is a change in the file system features). Otherwise, we deliberately try to avoid modifying the backups, since any updates to the backups is an opportunity to copy corrupted values to the backups, or otherwise risk write failures that could smash the backups. But if you really do want to copy the master superblock and block descriptor blocks ot backups, you can do it via the following: debugfs -w /dev/sdb1 debugfs: dirty debugfs: close -a debugfs: quit Regards, - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
