just subscribed for rsync-qa from bugzilla via rsync wrote:
Probably using different options? Can this be some sort of Heisenbug,
nobody can reproduce? Do the two sequences of shell commands work for
you as expected? Please note that both rsync commands in the mail
generated by bugzilla are split into two lines (each): Both rsync
commands should read
---
Actually, I am reproducing your bug exactly as you entered
it.
And it is very sensitive to options.
When I take out the $PWD it works.
First your case:
/tmp> rsync -aHvv --compare-dest=$PWD/dstlt/. $PWD/srclt/. $PWD/baklt/.
|& tee testlt.log
sending incremental file list
delta-transmission disabled for local transfer or --whole-file
./
a is uptodate
d is uptodate
b
a => b
/tmp> ll -i srclt dstlt baklt
baklt:
total 8
17305770 -rw-rw-r-- 2 2 Apr 5 15:46 a
17305770 -rw-rw-r-- 2 2 Apr 5 15:46 b
dstlt:
total 8
8474888 -rw-rw-r-- 1 2 Apr 5 15:46 a
8474896 -rw-rw-r-- 1 2 Apr 5 15:46 d
srclt:
total 16
8866 -rw-rw-r-- 2 2 Apr 5 15:46 a
8866 -rw-rw-r-- 2 2 Apr 5 15:46 b
8867 -rw-rw-r-- 2 2 Apr 5 15:46 c
8867 -rw-rw-r-- 2 2 Apr 5 15:46 d
----
Then w/o $PWD:
/tmp> rsync -aHvv --compare-dest=dstlt/. srclt/. baklt/. |& tee testlt.log
sending incremental file list
--compare-dest arg does not exist: dstlt/.
delta-transmission disabled for local transfer or --whole-file
./
b
d
a => b
c => d
/tmp> ll -i srclt dstlt baklt
baklt:
total 16
17305770 -rw-rw-r-- 2 2 Apr 5 15:46 a
17305770 -rw-rw-r-- 2 2 Apr 5 15:46 b
17305782 -rw-rw-r-- 2 2 Apr 5 15:46 c
17305782 -rw-rw-r-- 2 2 Apr 5 15:46 d
dstlt:
total 8
8474888 -rw-rw-r-- 1 2 Apr 5 15:46 a
8474896 -rw-rw-r-- 1 2 Apr 5 15:46 d
srclt:
total 16
8866 -rw-rw-r-- 2 2 Apr 5 15:46 a
8866 -rw-rw-r-- 2 2 Apr 5 15:46 b
8867 -rw-rw-r-- 2 2 Apr 5 15:46 c
8867 -rw-rw-r-- 2 2 Apr 5 15:46 d
--------------
However, if "dstl" is a different file system, it works:
rsync -aHv --compare-dest=~/dstlt/. $PWD/srclt/. $PWD/baklt/. |& tee
testlt.log
sending incremental file list
--compare-dest arg does not exist: ~/dstlt/.
./
b
d
a => b
c => d
In my usage both the compare-dest & baklt were 'technically'
different file systems (though the compare-dest was a snap
shot).
-----------
ARG: if baklt is on a different FS, but src+dst are same:
/tmp> rsync -aHv --compare-dest=$PWD/dstlt/. $PWD/srclt/. ~/baklt/. |&
tee testlt.log
sending incremental file list
./
b
a => b
/tmp> ll -i srclt dstlt ~/baklt
/home/law/baklt:
total 8
3677653445 -rw-rw-r-- 2 2 Apr 5 15:46 a
3677653445 -rw-rw-r-- 2 2 Apr 5 15:46 b
dstlt:
total 8
8474888 -rw-rw-r-- 1 2 Apr 5 15:46 a
8474896 -rw-rw-r-- 1 2 Apr 5 15:46 d
srclt:
total 16
8866 -rw-rw-r-- 2 2 Apr 5 15:46 a
8866 -rw-rw-r-- 2 2 Apr 5 15:46 b
8867 -rw-rw-r-- 2 2 Apr 5 15:46 c
8867 -rw-rw-r-- 2 2 Apr 5 15:46 d
----
Ok... something's screwy here. But no hangs.
Like I said in my 1st response, if some hard links
were missing in the bak directory, I really would be
unlikely to notice, as I didn't even try to check
them (way too many files), but I never got a hang --
and that's the part I'm thinking might be nfs
related, since I've seen several issues with nfs not
working the same way as a local fs.
I usually use smbfs -- in my usage, it's faster and I
usually have fewer compatibility problems.
(faster meaning ~ Reads~162MB/s, W~220MB/s,
though i've seen explorer hit over 400MB/s).
(using a 10Gb link).
But the above testing shows some unexplained behaviors
out of rsync that sure look like a bug.
Good test case!
:-)
--
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