Bug#932831: marked as done (btrfs in buster/stable (quota enabled) hangs after cp --reflink)
Your message dated Sun, 27 Nov 2022 16:46:33 +0100 (CET)
with message-id <20221127154633.190ACBE2DE0@eldamar.lan>
and subject line Closing this bug (BTS maintenance for src:linux bugs)
has caused the Debian Bug report #932831,
regarding btrfs in buster/stable (quota enabled) hangs after cp --reflink
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
932831: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=932831
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message ---
- To: submit@bugs.debian.org
- Subject: btrfs in buster/stable (quota enabled) hangs after cp --reflink
- From: Calin Dumitrescu <calin.dumitrescu@gmail.com>
- Date: Tue, 23 Jul 2019 21:27:11 +0300
- Message-id: <CAFE5nfG+=wjnbmRbeeSPDL0nfdFO_Ts0jbW8Y+tcKY-ZLRp8Ug@mail.gmail.com>
Package: src:linux
Version: 4.19.37-5+deb10u1
Severity: important
Bug is triggered after trying to cp --reflink a large file (30 GB).
Process 'btrfs-transacti' gets stuck at 100% CPU with no disk activity
and no visible progress (I let it run for over an hour).
All processes which require disk access stall or crash, rendering the
system unusable.
The bug manifests only with 'btrfs quota enable'. When quota is
disabled the operation completes without error.
-- Package-specific info:
** Version:
Linux version 4.19.0-5-amd64 (debian-kernel@lists.debian.org) (gcc
version 8.3.0 (Debian 8.3.0-6)) #1 SMP Debian 4.19.37-5+deb10u1
(2019-07-19)
** Kernel log:
[ 363.718732] INFO: task kworker/u4:0:7 blocked for more than 120 seconds.
[ 363.719619] Not tainted 4.19.0-5-amd64 #1 Debian 4.19.37-5+deb10u1
[ 363.720518] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 363.721430] kworker/u4:0 D 0 7 2 0x80000000
[ 363.722361] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[ 363.723307] Call Trace:
[ 363.724217] ? __schedule+0x2a2/0x870
[ 363.725131] schedule+0x28/0x80
[ 363.726061] wait_current_trans+0xc3/0xf0 [btrfs]
[ 363.726988] ? finish_wait+0x80/0x80
[ 363.727912] start_transaction+0x1d2/0x3f0 [btrfs]
[ 363.728849] btrfs_finish_ordered_io+0x2a1/0x7c0 [btrfs]
[ 363.729780] ? syscall_return_via_sysret+0x13/0x83
[ 363.730714] ? __switch_to_asm+0x40/0x70
[ 363.731637] ? __switch_to_asm+0x34/0x70
[ 363.732577] normal_work_helper+0xba/0x300 [btrfs]
[ 363.733530] process_one_work+0x1a7/0x3a0
[ 363.734451] worker_thread+0x30/0x390
[ 363.735381] ? create_worker+0x1a0/0x1a0
[ 363.736293] kthread+0x112/0x130
[ 363.737203] ? kthread_bind+0x30/0x30
[ 363.738117] ret_from_fork+0x35/0x40
[ 363.739028] INFO: task kworker/u4:1:57 blocked for more than 120 seconds.
[ 363.739932] Not tainted 4.19.0-5-amd64 #1 Debian 4.19.37-5+deb10u1
[ 363.740814] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs"
disables this message.
[ 363.741677] kworker/u4:1 D 0 57 2 0x80000000
[ 363.742557] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
[ 363.743423] Call Trace:
[ 363.744249] ? __schedule+0x2a2/0x870
[ 363.745081] schedule+0x28/0x80
[ 363.745920] wait_current_trans+0xc3/0xf0 [btrfs]
[ 363.746752] ? finish_wait+0x80/0x80
[ 363.747542] start_transaction+0x1d2/0x3f0 [btrfs]
[ 363.748343] btrfs_finish_ordered_io+0x2a1/0x7c0 [btrfs]
[ 363.749141] ? syscall_return_via_sysret+0x13/0x83
[ 363.749948] ? __switch_to_asm+0x40/0x70
[ 363.750757] ? __switch_to_asm+0x34/0x70
[ 363.751557] normal_work_helper+0xba/0x300 [btrfs]
[ 363.752342] process_one_work+0x1a7/0x3a0
[ 363.753129] worker_thread+0x30/0x390
[ 363.753916] ? create_worker+0x1a0/0x1a0
[ 363.754710] kthread+0x112/0x130
[ 363.755495] ? kthread_bind+0x30/0x30
[ 363.756273] ret_from_fork+0x35/0x40
** Hardware info:
CPU: Intel Pentium G3250
Chipset: Intel H81
System board: Asrock H81M-DGS R2.0
RAM: 16 GB
-- System Information:
Debian Release: 10.0
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.19.0-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_DK.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8),
LANGUAGE=en_DK.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages linux-image-4.19.0-5-amd64 depends on:
ii initramfs-tools [linux-initramfs-tool] 0.133
ii kmod 26-1
ii linux-base 4.6
Versions of packages linux-image-4.19.0-5-amd64 recommends:
ii apparmor 2.13.2-10
ii firmware-linux-free 3.4
Versions of packages linux-image-4.19.0-5-amd64 suggests:
pn debian-kernel-handbook <none>
ii grub-pc 2.02+dfsg1-20
pn linux-doc-4.19 <none>
Versions of packages linux-image-4.19.0-5-amd64 is related to:
ii firmware-amd-graphics 20190114-1
ii firmware-atheros 20190114-1
pn firmware-bnx2 <none>
pn firmware-bnx2x <none>
pn firmware-brcm80211 <none>
pn firmware-cavium <none>
pn firmware-intel-sound <none>
pn firmware-intelwimax <none>
pn firmware-ipw2x00 <none>
pn firmware-ivtv <none>
pn firmware-iwlwifi <none>
pn firmware-libertas <none>
ii firmware-linux-nonfree 20190114-1
ii firmware-misc-nonfree 20190114-1
pn firmware-myricom <none>
pn firmware-netxen <none>
pn firmware-qlogic <none>
ii firmware-realtek 20190114-1
pn firmware-samsung <none>
pn firmware-siano <none>
pn firmware-ti-connectivity <none>
pn xen-hypervisor <none>
--- End Message ---
--- Begin Message ---
Hi
This bug was filed for a very old kernel or the bug is old itself
without resolution.
If you can reproduce it with
- the current version in unstable/testing
- the latest kernel from backports
please reopen the bug, see https://www.debian.org/Bugs/server-control
for details.
Regards,
Salvatore
--- End Message ---
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