Description of Problem: If DMA is enabled for an IDE Tape device filesystem corruption can occur Version-Release number of selected component (if applicable): errata kernel 2.4.9-13.i586 How Reproducible: Leave ide settings at Red Hat default i.e. hdparm says tape drive is DMA capable. Steps to Reproduce: 1. Fresh install - dual UDMA/33 drives - RAID-1 mirrored - ext3 2. Perform e2fsck -f -n /dev/md[0-4]; echo $? 3. Execute a full backup with afbackup 4. Perform e2fsck -f -n /dev/md[0-4]; echo $? Actual Results: Directories are hit returning errors like "invalid fs type" or attempting to ls -l their contents returns "unable to stat ..." or permissions damaged e.g. "?--------x" Expected Results: None of the above is expected Additional Information: This took some tracking down. I had to watch several fresh installs through the RAID-1 creation process (bad block check enabled and formatted to ext3) then did readonly e2fscks of the partitions before and after the full backup. On three separate occasions filesystem damage occurred with DMA enabled for the IDE Tape Drive and does not occur with DMA disabled. I don't mind doing some testing for you on this but I'm getting a little bored with doing fresh installs :-)
See also #54617 (Just see with your eyes, do not mark dups!!!)
Sorry, I meant Bug 54517.
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