On February 13, 2003 01:19 pm, Bruno Diniz de Paula wrote: > Hi, > > how can I convert a ext3 partition to ext2? Is it only to change the > type in fstab and reboot? How can I synchronize the modification stored > in the journal file?
>From http://www.kernel.org/pub/linux/kernel/people/sct/ext3/README : How to move back from ext3 to ext2 ---------------------------------- It's quite easy. If you unmount an ext3 filesystem cleanly, then you can remount it as ext2 without any other commands. If you crash and are left with an unclean ext3 filesystem, on the other hand, the filesystem will prevent you from mounting it as ext2: it is not safe to mount it until you have recovered the journal, and the only way to do that for now is to mount it as ext3. However, if for any reason you do have an ext3 filesystem which you want to convert permanently back to ext2, whether it was cleanly unmounted or not, you can use "debugfs" from e2fsprogs-1.17 or later to do it. First, run debugfs and open the filesystem (the -w flag means open for write, and the -f flag forces it to open the filesystem even if there are unknown journal flags set): [root@sarek /root]# debugfs debugfs 1.18, 11-Nov-1999 for EXT2 FS 0.5b, 95/08/09 debugfs: open -f -w /dev/sdb1 Now, use "features" to see which feature bits are set on the filesystem: debugfs: features Filesystem features: has_journal filetype sparse_super We want to clear the journal bits, then we can quit: debugfs: features -has_journal -needs_recovery Filesystem features: filetype sparse_super debugfs: quit [root@sarek /root]# debugfs That's it! -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
