Note that in all --*-dest options if the path is relative it is relative
to the target dir not the "$PWD". I like to always use absolute paths
because of this. But essentially, the command with the instances of
$PWD vs without them the paths aren't the same. If you want all
relative to . paths it would be:
rsync -aHvv --compare-dest=../dstlt/. srclt/. baklt/.
Also, all these params that end with /. the . is kinda pointless despite
being points ;)
On 04/05/2017 07:19 PM, L A Walsh via rsync wrote:
> 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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Kevin Korb Phone:(407) 252-6853
Systems Administrator Internet:
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