Ubuntu
util-linux package

XFS and JFS kernel thread process, how to get rid of them?

Asked by Jose L. VG

I have 2 identical Dell servers (cloned via Clonezilla) both use only ext4 as a filesystem, none of them is configured with XFS or JFS anywhere, there are no xfsprogs or other XFS related packages installed.

Yet one of the servers has 18 processes: 4 xfslogd, 4 xfsdatad, 4 xfsconvertd, 1 jfsIO, 4 jfsCommit, 1 jfsSync
None of them is "killable"

The systems are Ubuntu 10.04 on a 2.6.32-27 kernel.

How can I get rid of them? (I don't need them)

How come that I have this process running on one of the servers and not the other? (they shoudn't be running on any of them)

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Jose L. VG (josvaz) said : 		#1

I managed to get rid of those processes/kernel threads with a very windows like solution:
Rebooting
(not very comforting!)

I ask my users not to use the applications affected until further notice and I rebooted both servers.

Now both servers present the same list of process and there is no xfs or jfs related processes
The questions remain:

If they appear again, can I get rid of them without rebootin?
Why where they started in the first place if I have no xfs or jfs FS, and not even user tools to format anything in those FS?

Revision history for this message
Jose L. VG (josvaz) said : 		#2

I managed to get rid of those processes/kernel threads with a very windows like solution:
Rebooting
(not very comforting!)

I ask my users not to use the applications affected until further notice and I rebooted both servers.

Now both servers present the same list of process and there is no xfs or jfs related processes
The questions remain:

If they appear again, can I get rid of them without rebooting?

Why where they started in the first place if I have no xfs or jfs FS, and not even user tools to format anything in those FS?

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actionparsnip (andrew-woodhead666) said : 		#3

Could log a bug.

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Jose L. VG (josvaz) said : 		#4

I could, If I manage to reproduce it again.

But the question remains, if that happens can't I tell the kernel to shut down those threads I don't need and/or are not doing anything?

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James Fysh (james-fysh) said : 		#5

Have just seen this issue with Kubuntu 11.10 today.

Unfortunately this occurred during an upgrade and seemed to cause the upgrade to hang, but I'm not 100% sure of that. I rebooted before checking the currently-running kernel version, but I'm pretty sure it was 3.0.0-13-generic.

I'm currently running:

jfysh@vmserver:~$ uname -a
Linux vmserver 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:28:43 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
jfysh@vmserver:~$ cat /etc/debian_version
wheezy/sid
jfysh@vmserver:~$ df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/sda1 ext4 443G 43G 379G 11% /
udev devtmpfs 7.8G 4.0K 7.8G 1% /dev
tmpfs tmpfs 3.2G 58M 3.1G 2% /run
none tmpfs 5.0M 0 5.0M 0% /run/lock
none tmpfs 7.8G 1.4M 7.8G 1% /run/shm
/dev/sdb1 ext4 459G 46G 390G 11% /backup

I can confirm that I had the same processes running as the OP, i.e. numerous xfs*d processes, and numerous jfs* processes.

I've had kubuntu set up and running on this machine for maybe 3-4 months, this is the first time I have seen this. I usually keep the machine running for 2+ weeks without a reboot (usually get forced to reboot when I cave in and update out-of-date packages).

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David Peterson (davep-zoosk) said : 		#6

I also encountered this issue. I fixed it by removing the xfs and jfs modules:

rmmod xfs
rmmod jfs

Can you help with this problem?

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