On Tue 2017-07-25 14:02:25, Theodore Ts'o wrote: > On Tue, Jul 25, 2017 at 03:46:04PM +0200, Pavel Machek wrote: > > > > Is there some field in ext2 superblock that changes every time > > filesystem is changed? Is mtime changed by fsck/badblocks/...? > > No, there isn't. If we were writing the superblock every time the > file system is changed it would be ***extremely*** flash unfriendly. > It would also be a scalability bottleneck, it would cause us to pay an > extra HDD seek, etc. So it's a really bad Bad BAD idea, and so we > don't do it.
Ok, I did not mean "every time" when I said "every time". That would
be too heavy.
I mean... is there something changed by the regular mount (like mtime)
plus by operations like fsck and badblocks?
In particular, does fsck change mtime when it writes to the
filesystem?
Thanks,
Pavel
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