Jens Axboe wrote:
On Fri, Jan 18 2008, Linda Walsh wrote:
I was examining the SuSE10.3 boot process and noted
it is setup to start & stop blktrace while the system
is booting. Odd think is that it checks to verify that
the root file system is of type "ext3".
Is that a "SuSEism" or is there some reason why it wouldn't
work with any file system?
Interesting, I never noticed that before. Don't know why they check for
ext3, perhaps their post processing tools map blocks to files and only
works for ext3?
---
Would be nice if they left a comment to that effect.
ext2 should be the same, and I think xfs has all the
data needed to process it under a perl script -- xfs_bmap,
for example, prints off all of the blocks used by a file (so
it's easy to compute fragmentation).
They don't seem to include a util in the blktrace package
to map blocks to to files. Anyway, you answer my question --
blktracing doesn't rely on something ext3 specific.
thanks,
linda
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