From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 71791] Unlinking a file that was moved to another folder but
still open by other process blocks either process (not always reproducible)
Date: Tue, 18 Mar 2014 15:35:03 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=71791
--- Comment #3 from edpeur@gmail.com ---
Yes, the journal mode was 'data=ordered'.
This problem is reproduced on this external USB drive on my laptop using a
quite light workload.
It is not always reproducible and I had to change the way I work so I might not
be able to reproduce this bug in the near time.
There was another hang when shutdown tried to umount this drive:
[374641.816086] INFO: task shutdown:20015 blocked for more than 120 seconds.
[374641.816096] Tainted: G W 3.12-1-rt-amd64 #1
[374641.816099] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
this message.
[374641.816103] shutdown D ffff8800b4ce6af0 0 20015 1
0x00000000
[374641.816116] ffff8800b4ce6780 0000000000000086 ffff880103177fd8
ffff880103177fd8
[374641.816119] ffff880103177fd8 ffff880103177fd8 ffff8800b4ce6780
ffff8800b4ce6780
[374641.816122] 0000000000000002 ffffffff81123410 ffff880103177d90
000000000000c394
[374641.816129] Call Trace:
[374641.816142] [] ? wait_on_page_read+0x60/0x60
[374641.816147] [] ? schedule+0x21/0x90
[374641.816151] [] ? io_schedule+0x83/0xd0
[374641.816154] [] ? sleep_on_page+0x5/0x10
[374641.816158] [] ? __wait_on_bit+0x54/0x80
[374641.816162] [] ? wait_on_page_bit+0x7f/0x90
[374641.816166] [] ? wake_atomic_t_function+0x30/0x30
[374641.816171] [] ? pagevec_lookup_tag+0x18/0x20
[374641.816175] [] ? filemap_fdatawait_range+0xd8/0x150
[374641.816179] [] ? get_parent_ip+0x9/0x20
[374641.816182] [] ? get_parent_ip+0x9/0x20
[374641.816186] [] ? add_preempt_count+0x97/0xe0
[374641.816191] [] ? pin_current_cpu+0x90/0x1b0
[374641.817981] [] ? get_parent_ip+0x9/0x20
[374641.817983] [] ? unpin_current_cpu+0xd/0x60
[374641.817986] [] ? sync_inodes_sb+0x169/0x1f0
[374641.817989] [] ? generic_write_sync+0x60/0x60
[374641.817991] [] ? iterate_supers+0xba/0x120
[374641.817993] [] ? sys_sync+0x2d/0x90
[374641.817996] [] ? system_call_fastpath+0x16/0x1b
I have upgraded to:
http://ftp.debian.org/debian/pool/main/l/linux/linux-image-3.13-1-amd64_3.13.5-1_amd64.deb
I have enabled 'data=writeback' now. So, I will report if I see this problem
again.
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