On Sat, Sep 28, 2002 at 01:47:05AM +1000, Martial Herbaut wrote: > Following a raid controller crash I am getting this error when attempting > to fsck > > ----------- > /sbin/fsck.ext3 -f /dev/customer_data_volume_group/customer_data_volume > e2fsck 1.26 (3-Feb-2002) > /sbin/fsck.ext3: Attempt to read block from filesystem resulted in short > read while checking ext3 journal > e2fsck: io manager magic bad! > ------------ "io manager magic bad" is an internal e2fsck error which should never happen. It means that data structure passed to a function didn't have the correct magic number, and is symptomatic of (a) a programming error, (b) a corrupted executable or shared library, (c) a bad hard drive or hard drive cable resulting in a corrupted image of the executable or libext2fs shared libraryin memory, or (d) a memory/cache error. No one else has reported any such problems, so the first possibility is unlikely. Combined withthe I/O errors reported in your syslogs: > I/O error: dev 08:21, sector 3211 > I/O error: dev 08:21, sector 9805371 And it looks like you have some kind of hard drive failure. What's unusual/strange is that we're not seeing any messages from the scsi drive detailing exactly what sort of I/O error we're seeing; just that the SCSI layer is reporting some kind of problem. In any case, my advice is to copy the data to a known good set of disk drives ASAP, and then run the badblocks program on the underlying disks. If you run the test in read-write (non-distructive if you want to try to preserve the data, distructive if you don't care since you've already copied the data to your spare good disks) mode, the disk may automatically remap the bad blocks, and you may be able to reuse your disks for some other purpose. The reason why I suggest copying the data off is that sometimes further disk activity may cause more disk blocks to fail (drive failures are often progressive, with exponentially increasing number of bad blocks), and my priority is always to assure that the data is safe before thinking about trying to see whether or not the disks can be salvaged. Given how cheap disks are these days, the data on them is often an order of magnitude or more more valuable that the disks that they're stored on. - Ted _______________________________________________ Ext3-users@redhat.com https://listman.redhat.com/mailman/listinfo/ext3-users
