Bug 10950 - rsync hangs when specifying a backup directory
rsync hangs when specifying a backup directory
Status: NEW
Product: rsync
Classification: Unclassified
Component: core
3.1.0
x64 Linux
: P5 normal
: ---
Assigned To: Wayne Davison
Rsync QA Contact
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2014-11-20 17:59 UTC by bugzilla.samba
Modified: 2014-11-20 18:01 UTC (History)
1 user (show)

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Description bugzilla.samba 2014-11-20 17:59:58 UTC
rsync hangs after working a few minutes without any error messages.

Since I have upgraded from Ubuntu 12.04.5 to Ubuntu 14.04 rsync comes in version 3.1.0. And since the upgrade rsync hangs if I specify a backup directory by the parameters "--backup --backup-dir=...".
Without the both backup parameters rsync works fine as before the upgrade!

So I tried the argument "--block-size" as described in https://bugzilla.samba.org/show_bug.cgi?id=10518#c8 although I think it is another issue there because I don't have large vm files.
But if I specify 10 MB I get the error: "rsync: --block-size=10485760 is too large (max: 131072)". And with 131072 rsync hangs too.

Now I tried the arguments "--protocol=30" and "--protocol=29", but rsync hangs too - also in combination: "--block-size=131072 --protocol=29".

Also the option "--no-inc-recursive" isn't helpfull (as described in https://bugzilla.samba.org/show_bug.cgi?id=8804#c0) and rsync hangs with it too.


The parameters to rsync are:

/usr/bin/rsync --recursive --links --hard-links --perms --times --group --owner --devices --specials --backup --backup-dir=/backup/rsync-backup/14.04/incremental/2014-11-20_08-23-41 --delete --numeric-ids --exclude-from=/usr/local/bin/rsync-backup/rsync-backup.13.usbhdd_toshiba_2t.usbhdd_trekstor_500g.conf.d/rsync-backup.exclude.list --files-from=/usr/local/bin/rsync-backup/rsync-backup.13.usbhdd_toshiba_2t.usbhdd_trekstor_500g.conf.d/rsync-backup.include.list --log-file=/var/log/rsync/rsync-backup_2014-11-20_08-23-41.log --verbose --verbose /media/usbhdds/toshiba/2t/5_vgusbhdd_toshiba_2t-os1 /backup/rsync-backup/14.04/full/daily.0

The last logfile entries are:

root@pc5: /var/log/rsync $ tail rsync-backup_2014-11-20_08-23-41.log
2014/11/20 08:47:20 [13478] >f..t...... lib/firmware/cis/src/tamarack.cis
2014/11/20 08:47:20 [13478] .d..t...... lib/firmware/cpia2/
2014/11/20 08:47:20 [13478] >f..t...... lib/firmware/cpia2/stv0672_vp4.bin
2014/11/20 08:47:20 [13478] .d..t...... lib/firmware/cxgb3/
2014/11/20 08:47:20 [13478] >f..t...... lib/firmware/cxgb3/ael2005_opt_edc.bin
2014/11/20 08:47:20 [13478] >f..t...... lib/firmware/cxgb3/ael2005_twx_edc.bin
2014/11/20 08:47:20 [13478] >f..t...... lib/firmware/cxgb3/ael2020_twx_edc.bin
2014/11/20 08:47:20 [13478] >f..t...... lib/firmware/cxgb3/t3b_psram-1.1.0.bin
2014/11/20 08:47:20 [13478] >f..t...... lib/firmware/cxgb3/t3c_psram-1.1.0.bin
2014/11/20 08:47:20 [13478] .d..t...... lib/firmware/cxgb4/
root@pc5: /var/log/rsync $ 

The content of /lib/firmware/cxgb4/ isn't very huge:

root@pc5: /var/log/rsync $ l /lib/firmware/cxgb4/
total 972K
drwxr-xr-x  2 root root 4,0K 2014-11-07 12:48 ./
drwxr-xr-x 63 root root  20K 2014-11-07 12:48 ../
-rw-r--r--  1 root root 476K 2014-09-18 15:50 t4fw-1.9.23.0.bin
lrwxrwxrwx  1 root root   17 2014-09-18 15:50 t4fw.bin -> t4fw-1.9.23.0.bin
-rw-r--r--  1 root root 470K 2014-09-18 15:50 t5fw-1.9.23.0.bin
lrwxrwxrwx  1 root root   17 2014-09-18 15:50 t5fw.bin -> t5fw-1.9.23.0.bin
root@pc5: /var/log/rsync $ 

And rsync seems to be idle:

root@pc5: /usr/local/bin/rsync-backup $ top -b -n 1 | egrep "^ *PID|rsync" | grep -v grep
  PID  PPID USER      PR  NI S  %CPU %MEM     TIME+ COMMAND
13478 13477 root      20   0 S   0,0  2,4   0:39.05 /usr/bin/rsync --recursive --links --hard-links --perms --times --group --owner --devices --specials --backup --backup-dir=/backup/rsync-bac+
13479 13478 root      20   0 S   0,0  2,5   0:25.98 /usr/bin/rsync --recursive --links --hard-links --perms --times --group --owner --devices --specials --backup --backup-dir=/backup/rsync-bac+
15835 13479 root      20   0 S   0,0  2,4   0:00.70 /usr/bin/rsync --recursive --links --hard-links --perms --times --group --owner --devices --specials --backup --backup-dir=/backup/rsync-bac+
root@pc5: /usr/local/bin/rsync-backup $ 

strace output:

root@pc5: ~ $ strace -f -t -s 1024 -p 13478
Process 13478 attached
17:37:10 select(7, [], [6], [], {24, 74682}) = 0 (Timeout)
17:37:34 select(7, [], [6], [], {60, 0}) = 0 (Timeout)
17:38:34 select(7, [], [6], [], {60, 0}) = 0 (Timeout)
17:39:34 select(7, [], [6], [], {60, 0}) = 0 (Timeout)
17:40:34 select(7, [], [6], [], {60, 0}) = 0 (Timeout)
17:41:34 select(7, [], [6], [], {60, 0}) = 0 (Timeout)
17:42:34 select(7, [], [6], [], {60, 0}^CProcess 13478 detached
 <detached ...>
root@pc5: ~ $ 
root@pc5: ~ $ strace -f -t -s 1024 -p 13479
Process 13479 attached
17:37:36 select(2, [], [1], [], {55, 15138}) = 0 (Timeout)
17:38:31 select(2, [], [1], [], {60, 0}) = 0 (Timeout)
17:39:31 select(2, [], [1], [], {60, 0}) = 0 (Timeout)
17:40:31 select(2, [], [1], [], {60, 0}) = 0 (Timeout)
17:41:31 select(2, [], [1], [], {60, 0}) = 0 (Timeout)
17:42:31 select(2, [], [1], [], {60, 0}) = 0 (Timeout)
17:43:31 select(2, [], [1], [], {60, 0}^CProcess 13479 detached
 <detached ...>
root@pc5: ~ $ 
root@pc5: ~ $ strace -f -t -s 1024 -p 15835
Process 15835 attached
17:41:36 select(6, [], [5], [], {58, 306093}) = 0 (Timeout)
17:42:34 select(6, [], [5], [], {60, 0}) = 0 (Timeout)
17:43:34 select(6, [], [5], [], {60, 0}) = 0 (Timeout)
17:44:35 select(6, [], [5], [], {60, 0}) = 0 (Timeout)
17:45:35 select(6, [], [5], [], {60, 0}) = 0 (Timeout)
17:46:35 select(6, [], [5], [], {60, 0}) = 0 (Timeout)
17:47:35 select(6, [], [5], [], {60, 0}^CProcess 15835 detached
 <detached ...>
root@pc5: ~ $