[Bug 6590] [sender] could not find xattr #1 for home/jdoe/TheFresh

[samba-bugs at samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=6590

--- Comment #6 from SATOH Fumiyasu <fumiyas at osstech.co.jp> ---
You can reproduce this bug by the following:

# rm -rf src dst
# mkdir src dst
# touch src/f
# setfattr -n security.a -v 0sAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
src/f
# setfattr -n user.a -v 0sAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA src/f
# rsync --fake-super -X src/f dst
[sender] could not find xattr #1 for f
rsync error: protocol incompatibility (code 2) at xattrs.c(622) [sender=3.1.2]

In the first case, "security.a" and "user.a" have 33 bytes each other.
If "security.a" and/or "user.a" is reduced to 32 or shorter, 
rsync does not fail as the following:

# rm -rf src dst
# mkdir src dst
# touch src/f
# setfattr -n security.a -v 0sAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
src/f
# setfattr -n user.a -v 0sAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA= src/f
# rsync --fake-super -X src/f dst
(no output, thus no error)

And then, if you change "user.a" to "user.s" (or "user.t", "user.u" ...)
from the first case, rsync does not fail too:

# rm -rf src dst
# mkdir src dst
# touch src/f
# setfattr -n security.a -v 0sAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
src/f
# setfattr -n user.s -v 0sAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA src/f
# rsync --fake-super -X src/f dst
(no output, thus no error)

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