rsync - Aug 2013 - [Bug 10092] New: Hang when remote dest's disk is full

https://bugzilla.samba.org/show_bug.cgi?id=10092

           Summary: Hang when remote dest's disk is full
           Product: rsync
           Version: 3.0.9
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P5
         Component: core
        AssignedTo: wayned at samba.org
        ReportedBy: list0570 at paradise.net.nz
         QAContact: rsync-qa at samba.org


rsync -aAH --numeric-ids --no-inc-recursive --delete /local/.. rhost:/...

hangs forever when the disk on the remote becomes full. When used with -vi, the
output just stops.
On the remote, the rsync process exits but ssh does not; netstat shows
connected on both sides for ssh and on local for rsync.

The local rsync is stuck in select(), the remote rsync has exited.

Redirecting the local rsync's stdin/out/err to /dev/null does not improve
things.

openSUSE 12.3, openssh 6.1p1, rsync 3.0.9, kernel 3.7.10

Is there any workaround to make the local rsync quit with an error?

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https://bugzilla.samba.org/show_bug.cgi?id=10092

Wayne Davison <wayned at samba.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID

--- Comment #1 from Wayne Davison <wayned at samba.org> 2013-08-20
05:37:05 UTC ---
If rsync exits and your ssh is still around, that's a bug in your ssh and
you
should be checking with that project about why they are not exiting properly. 
One possible issue may be that you told ssh to do some port-forwarding (check
your default ssh config) and someone opened a forwarded connection using
rsync's ssh (in which case the ssh would stay open until all connections had
closed).

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Volker Kuhlmann <list0570 at paradise.net.nz> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
                 CC|                            |list0570 at paradise.net.nz
         Resolution|INVALID                     |

--- Comment #2 from Volker Kuhlmann <list0570 at paradise.net.nz>
2013-10-25 05:22:48 UTC ---
Thanks Wayne, that makes perfect sense, but all rsync-related processes came up
to be non-existent so far and "that project I should be checking with"
appears
to be rsync.

I was able to narrow it down a little. It is necessary to have a large number
of files (600k) and/or a large volume to transfer, like created by rsnapshot.
The hang occurs for me with --link-dest but I did not check whether this is a
necessary condition. The destination becomes full during transfer - naturally
one will want an error, not a hang.

Shell configuration, locale, and user/root on local and remote host are not
relevant.

The problem disappears with some rudimentory testing when using rsync 3.1.0.
Perhaps it has to do with the "Improved the propagation of abnormal-exit
error
messages" item on the list of fixed bugs in 3.1.0? Or is it something else
that's only temporarily hidden?

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--- Comment #3 from Kevin Korb <rsync at sanitarium.net> 2013-10-25
05:26:55 UTC ---
What is this rhost:/... syntax?  Are you actually trying to make a directory
named "..."?  If not then I think you have a typo.

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--- Comment #4 from Volker Kuhlmann <list0570 at paradise.net.nz>
2013-10-25 05:53:22 UTC ---
I gave the relevant parts of the command only, the full version spans 3 lines
but the --exclude options and actual paths are hardly relevant. Read that as
rhost:/whateverdir/ if you prefer. The destination directory does not exist,
which is kind of required when using --link-dest.

If it really matters, the command is

rsync -aAH --numeric-ids --no-inc-recursive --delete --delete-during
/snapshots/daily.0/ rhost:/newdir -vi

with some added --exclude options, some using shell globs. The hang occurs with
and without --link-dest added in.

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--- Comment #5 from devurandom at gmx.net ---
Could this be a duplicate of bug #1442?

There are a lot of bugreports related to rsync hanging mysteriously, some of
which may be duplicates of each other:

https://bugzilla.samba.org/show_bug.cgi?id=1442
https://bugzilla.samba.org/show_bug.cgi?id=2957
https://bugzilla.samba.org/show_bug.cgi?id=9164
https://bugzilla.samba.org/show_bug.cgi?id=10035
https://bugzilla.samba.org/show_bug.cgi?id=10092
https://bugzilla.samba.org/show_bug.cgi?id=10518
https://bugzilla.samba.org/show_bug.cgi?id=10950
https://bugzilla.samba.org/show_bug.cgi?id=11166
https://bugzilla.samba.org/show_bug.cgi?id=12732
https://bugzilla.samba.org/show_bug.cgi?id=13109

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