16 messages in org.freebsd.freebsd-hackersRe: dump on mounted fs | From | Sent On | Attachments |
|---|---|---|
| Mark W. Krentel | Jul 16, 2002 10:29 pm | |
| Peter Wemm | Jul 17, 2002 12:32 am | |
| David Malone | Jul 17, 2002 8:54 am | |
| Mark W. Krentel | Jul 18, 2002 6:39 pm | |
| Mark W. Krentel | Jul 18, 2002 6:41 pm | |
| David Malone | Jul 18, 2002 11:38 pm | |
| Brandon D. Valentine | Jul 19, 2002 7:19 am | |
| David Miller | Jul 19, 2002 10:06 am | |
| Mark W. Krentel | Jul 19, 2002 10:52 am | |
| Dan Nelson | Jul 19, 2002 1:33 pm | |
| Greg Black | Jul 20, 2002 6:02 am | |
| Greg Black | Jul 20, 2002 6:08 am | |
| dir...@covalent.net | Jul 21, 2002 6:39 pm | |
| Dan Nelson | Jul 23, 2002 7:52 am | |
| Brandon D. Valentine | Jul 25, 2002 10:35 pm | |
| Dan Nelson | Jul 25, 2002 11:48 pm |
| Subject: | Re: dump on mounted fs | |
|---|---|---|
| From: | Mark W. Krentel (kren...@dreamscape.com) | |
| Date: | Jul 19, 2002 10:52:46 am | |
| List: | org.freebsd.freebsd-hackers | |
This is what the general consensus on the amanda-users list has been for some time now. Linux ext2 dump/restore is massively broken.
I believe that ext2 dump on a mounted file system in Linux is pretty much deprecated, though it should still work ok if the partition is unmounted. It's not dump's fault and it's not something that dump can fix. The design of the page and buffer caches in the 2.4 kernels makes it impossible for dump to see the correct versions of some files. (Strangely, my tests suggest that it's files written without O_TRUNC that are handled incorrectly.) And no amount of waiting or syncs will help.
http://old.lwn.net/2001/0503/a/lt-dump.php3 http://old.lwn.net/2001/0503/a/lt-metadata.php3
But my real question is if these kinds of problems occur in Freebsd? I understand there are risks, but dump on a mounted partition isn't hopelessly broken in Freebsd, right?
--Mark
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