https://bugzilla.samba.org/show_bug.cgi?id=10527
--- Comment #21 from roland devz...@web.de 2014-04-16 18:54:51 UTC ---
You should press alt-sysrq-w when the deadlock happen to see if there are
any processes deadlocked in the kernel. If yes, send me the stacktrace of
those processes.
If
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--- Comment #22 from Colin Rice dah4...@gmail.com 2014-04-16 19:19:09 UTC ---
I removed the verbosity and it stopped hanging. If I drop back down to -i
again, it does hang.
I still use dm-crypt for the partition.
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--- Comment #23 from Colin Rice dah4...@gmail.com 2014-04-16 19:24:39 UTC ---
Created attachment 9854
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sysrq blocked tasks
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--- Comment #24 from Colin Rice dah4...@gmail.com 2014-04-16 20:31:10 UTC ---
Originally it was hanging even without the i, but since then I've wiped the
backup drive completely, and upgraded my kernel from 3.13.6 to 3.14 and it is
no longer
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--- Comment #25 from roland devz...@web.de 2014-04-16 20:56:50 UTC ---
so, if kernel update fixed it we should consider this as being resolved
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--- Comment #12 from Colin Rice dah4...@gmail.com 2014-04-13 08:07:19 UTC ---
My apologies, I wrote to the wrong mount. btrfs on a raw partition works fine.
So it appears the problem is related to dm-crypt.
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--- Comment #13 from roland devz...@web.de 2014-04-13 08:20:50 UTC ---
can you reproduce the hang without using rsync, e.g. by doing an ordinary cp ?
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--- Comment #14 from Colin Rice dah4...@gmail.com 2014-04-13 08:43:26 UTC ---
If I use an ordinary cp -rx everything seems to work.
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--- Comment #15 from roland devz...@web.de 2014-04-13 09:01:04 UTC ---
i have no idea on how to proceed further.
if you use an older distro, try reproducing that on a recent one, with recent
kernel version.
maybe the dm-crypt people have an idea
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--- Comment #16 from Colin Rice dah4...@gmail.com 2014-04-13 09:02:32 UTC ---
Hmm, I'm pretty sure the problem appeared sometime in 3.13 since before then
rsync was working fine. I'll contact the dm-crypt people and ask for help.
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--- Comment #17 from roland devz...@web.de 2014-04-13 09:24:09 UTC ---
apparently, there seems to exist a deadlock patch for dmcrypt for about 5
months, but it seems it did not enter mainline kernel yet, so probably your
distro is also missing it:
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Wayne Davison way...@samba.org changed:
What|Removed |Added
Status|NEW |RESOLVED
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--- Comment #19 from Colin Rice dah4...@gmail.com 2014-04-13 20:13:55 UTC ---
The extra verbosity was added as an attempt to debug the deadlocks. However as
it is not longer hanging without the extra verbosity, it works for me.
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--- Comment #7 from roland devz...@web.de 2014-04-12 10:28:30 UTC ---
can you tell if there is some special type of mount involved?
what type of filesystem on src / destination ?
large files ?
for how long did you wait for finish ? (
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--- Comment #9 from roland devz...@web.de 2014-04-12 21:26:37 UTC ---
Like try and backup a portion of the file system?
no, retry with one of the filesystems being standard ext3/4 to see if source or
target fs is the culprit.
btrfs is still
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--- Comment #10 from Colin Rice dah4...@gmail.com 2014-04-13 01:59:27 UTC ---
It appears that the problem is writing to a partition mounted on top of
dm-crypt. I tried btrfs and ext4 on top of dm-crypt and they both deadlocked.
Ext4 on top of a
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--- Comment #11 from Colin Rice dah4...@gmail.com 2014-04-13 05:47:05 UTC ---
I tried with btrfs on top of a raw partition as the destination and it
deadlocked.
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--- Comment #6 from Colin Rice dah4...@gmail.com 2014-04-10 23:48:08 UTC ---
(In reply to comment #5)
lsof | grep rsync is showing no open files
I was running lsof as a local user not root.
lsof | grep rsync is showing it stuck on the same file
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--- Comment #4 from roland devz...@web.de 2014-04-08 21:42:19 UTC ---
pardon, typo - it should read lsof|grep rsync
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--- Comment #5 from Colin Rice dah4...@gmail.com 2014-04-09 02:53:35 UTC ---
lsof | grep rsync is showing no open files
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--- Comment #2 from Colin Rice dah4...@gmail.com 2014-04-03 03:40:24 UTC ---
Also happens with rsync 3.1.1pre1
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--- Comment #1 from Colin Rice dah4...@gmail.com 2014-03-30 09:48:36 UTC ---
Created attachment 9820
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rsync strace output
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