[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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As described in my previous comment, the fs was available in read-write
mode again.
I added another disk to the btrfs and with the additional space I was
able to rerun and successfully finish the btrfs balance operation (as
described in https://www.slicewise.net/debian/balancierung-eines-vollen-
b
I rebooted the system in the meantime. It now had Kernel 4.2.0-30.36
from previous updates:
cat /proc/version_signature
Ubuntu 4.2.0-30.36~14.04.1-generic 4.2.8-ckt3
During the reboot, the system performed some disk I/O for several hours.
Before services like sshd became available. I guess this d
@jsalisbury
What exactly should I test on a broken file system with a newer Kernel?
How could this help you? If btrfs balance corrupted my file system, how
should a newer kernel fix that?
If you can tell me test a scenario which will help you to see if the bug
is fixed upstream, I'd be happy to h
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.5 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix th
Checking the underlying mdraid with
echo check > /sys/block/md0/md/sync_action
now has finished and it is just fine:
cat /proc/mdstat
Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4]
[raid10]
md0 : active raid1 sda3[0] sdb3[1]
2929833792 blocks super 1.2 [2/2
Now, this one is funny after ~2 days:
# btrfs balance status x
Balance on 'x' is running
0 out of about 2797 chunks balanced (533 considered), 100% left
# btrfs balance cancel x
ERROR: balance cancel on 'x' failed - Read-only file system
So the balance is still running, consuming 100% of one cpu
cat /proc/mounts
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
udev /dev devtmpfs rw,relatime,size=8157548k,nr_inodes=2039387,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw
I found a few entries in kern.log, nothing special during btrfs balance:
Mar 19 03:47:03 server kernel: [2970569.341605] BTRFS info (device dm-0):
relocating block group 9553211031552 flags 36
Mar 19 04:01:08 server kernel: [2971415.588391] BTRFS info (device dm-0):
relocating block group 955267
Error messages in dmesg |tail are still ongoing, presumably originating
from the btrfs command which still is eating 100% of the cpu,
I did not reboot yet nor kill the btrfs process (pid 27516).
Here's two lines from two of the latest error messages in dmesg:
[3111643.576434] [] entry_SYSCALL_64
Something noticable: The command btrfs is consuming 100% of the cpu for
a long time:
# top
[...]
PID BENUTZER PR NIVIRTRESSHR S %CPU %MEM TIME+ COMMAND
27516 root 20 0 15476132 0 R 100,0 0,0 1348:33 btrfs
I assume that this process originates from my "btrf
Currently, I'm checking the md-raid (raid 1) with
echo check > /sys/block/md0/md/sync_action
I have 2 x 3.5TB hard drives, so this will take some while.
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The underlying md-raid (mirroring) is fine. So according to md-raid
status, there's nothing wrong with the mirrored partitions:
cat /proc/mdstat
Personalities : [raid1] [linear] [multipath] [raid0] [raid6] [raid5] [raid4]
[raid10]
md0 : active raid1 sda3[0] sdb3[1]
2929833792 blocks super
Some relevant lines from /var/log/syslog:
Mar 19 19:15:10 server smartd[2251]: Device: /dev/sdb [SAT], SMART Usage
Attribute: 194 Temperature_Celsius changed from 107 to 106
Mar 19 07:59:21 server console-kit-daemon[2041]: GLib-CRITICAL: Source ID 376
was not found when attempting to remove it
M
related: https://www.mail-archive.com/linux-
bt...@vger.kernel.org/msg48609.html
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Title:
soft lockup during btrfs balance
Status in
# apt-cache policy btrfs-tools
btrfs-tools:
Installiert: 3.12-1ubuntu0.1
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Title:
soft lockup during btrfs balance
Statu
I have # btrfs --version
Btrfs v3.12
Kernel is from Hardware enablement stack 14.04.4, Btrfs-tools from
ubuntu's package respectively.
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Related: https://www.spinics.net/lists/linux-btrfs/msg48037.html
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Title:
soft lockup during btrfs balance
Status in linux package i
Related: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1349711
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Title:
soft lockup during btrfs balance
Status in linux pack
For my setup, btrfs file system runs on top of a LUKS encrypted
partition which itself is on top of a mdraid (mirroring).
The Layout is:
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:00 2,7T 0 disk
├─sda1 8:10 7M
Note that some months ago (when I got the error message), I still was
able to cleanly free up some diskspace and perform a clean btrfs balance
(which freed a lot of space).
My hope was that I'd get an error message and exit cleanly if disk space
is missing. Instead, I got the soft lockup.
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** Attachment added: "uname-a.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1559723/+attachment/4605660/+files/uname-a.log
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** Attachment added: "lspci-vvnn.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1559723/+attachment/4605659/+files/lspci-vvnn.log
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related: #1349711
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Title:
soft lockup during btrfs balance
Status in linux package in Ubuntu:
New
Bug description:
I performed
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