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In 2.4.20-pre5 an optimisation was made to the ext3 fsync function which can very easily cause file data corruption at unmount time. This was first reported by Nick Piggin on November 29th (one day after 2.4.20 was released, and three months after the bug was merged. Unfortunate timing) This only affects filesystems which were mounted with the `data=journal' option. Or files which are

Hi, as I mentioned in earlier mail to ext3-users I have been getting some corruption on an ext3 filesystem that has been serving NFS. I am now confident that I fully understand the problem and have a patch. It only affects data=journal mode and I wonder if it might also be the cause of the corruption noted by a number of people on linux-kernel. First I will explain the problem. Then display

Well.... you might remember that I have had problems will my NFS fileserver that run ext3 with data=journal. The filesystem corruption now seems too be solved with the patch (plus amendment) that I posted, so I am happy about that... but there is more. I have known for a while that ext3 doesn't behave very well when the journal fills up. If it finds that the journal is full, and the