hammer upgrade changes md5 checksum
mneumann at ntecs.de
Tue Mar 17 03:24:12 PDT 2009
Am Mon, 16 Mar 2009 19:06:51 -0700 (PDT)
schrieb Matthew Dillon <dillon at apollo.backplane.com>:
> :Now I upgrade the /slave:
> : hammer pfs-upgrade /slave
> :and get a different checksum:
> : cd /slave
> : tar cf - DIR | md5 # 3613c...
> :If I downgrade again, I get the same checksum as before (9472f...).
> :Hm, just curious why this happens and if this might be a bug?
> : Michael
> This is probably because HAMMER treats snapshots differently from
> live. The mtime and atime will be locked to the ctime when
> accessed from a snapshot. tar does not record atime, but I'm pretty
> sure it does record mtime.
Ah, that's it! Thanks Mattew and Simon.
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