e2fsck discrepancies
Roland Bock
rbock at eudoxos.de
Fri Oct 24 15:19:25 UTC 2008
Hi,
yesterday I ran e2fsck -n on a mounted file system and got:
/dev/sdb1 contains a file system with errors, check forced.
According to Ted, the lines that followed were not to be trusted due to
the fact that the file system was mounted. But this error statement
suggests to run a check with the fs unmounted.
Today, we scheduled a downtime and ran the check. It came of completely
clean:
~: e2fsck -fy /dev/sdb1
e2fsck 1.40.8 (13-Mar-2008)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/sdb1: 32028520/536870912 files (0.5% non-contiguous),
802465197/2147460933 blocks
Does this mean that read-only checks are generally not trustworthy, even
the statement that the filesystem has errors? Or something like
Read-only reports clean: fine
Read-only reports error: not necessarily really an error
Thanks and regards,
Roland
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