DO NOT REPLY [Bug 7778] --inplace does extra WRITE operations

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=7778





------- Comment #8 from ildar at altlinux.ru  2010-11-11 13:30 CST -------
(In reply to comment #7)
> I'm not sure how best the code could be improved to try to avoid this.  Matt's
> idea of block-aligned checks could be made to work (given enough read-ahead),
> but I'm not sure it's worth it, since it only affects very repetitive files.

Sorry, I can't agree.
This issue may be crucial in some cases. Overwriting blocks is bad: not just
for sparse targets but also for filesystems like JFFS2, where "overwrinting"
means enlarging target space. This means: for 1M target overwritten 10 times it
takes 11M of space.


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