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lately a kworker process has been cropping up and thrashing the disk constantly. its writing 4 mbytes per second constantly! it drasticly impacts performance
i know that kworker is a kernel process but i cant figure it out nay more
Last edited by fennectech (2014-11-17 00:23:38)
[FennecTECH@ArchOS ~]$ cat about_myself
Hello there my name is FennecTECH I am a novice arch user though I am here to learn I live in central Minnesota where I hangout in the console and make my way into X11. Nice to meet you all! Enjoy my home directory feel free to poke around. There is a solution to every problem, so long as you do not break the laws of physics.
=^_^=
[FennecTECH@ArchOS ~]$
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It's not going to be much fun, but you might take a look at this document:
https://raw.githubusercontent.com/torva … kqueue.txt
Especially part number 7 at the bottom.
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[fennectech@archos ~]$ sudo cat /proc/1501/stack
[sudo] password for fennectech:
[<c11a5e9e>] __wait_on_buffer+0x2e/0x30
[<f84c595f>] write_ctree_super+0x78f/0xb70 [btrfs]
[<f84cc0a2>] btrfs_commit_transaction+0xb02/0xc90 [btrfs]
[<f84b2686>] flush_space+0x86/0x540 [btrfs]
[<f84b2cf7>] btrfs_async_reclaim_metadata_space+0x1b7/0x250 [btrfs]
[<c1066e43>] process_one_work+0x113/0x380
[<c1067339>] worker_thread+0x39/0x440
[<c106b4e3>] kthread+0xb3/0xd0
[<c146fc01>] ret_from_kernel_thread+0x21/0x30
[<ffffffff>] 0xffffffffseems to be something to do with btrfs
[FennecTECH@ArchOS ~]$ cat about_myself
Hello there my name is FennecTECH I am a novice arch user though I am here to learn I live in central Minnesota where I hangout in the console and make my way into X11. Nice to meet you all! Enjoy my home directory feel free to poke around. There is a solution to every problem, so long as you do not break the laws of physics.
=^_^=
[FennecTECH@ArchOS ~]$
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would bad sectors cause this problem?
[FennecTECH@ArchOS ~]$ cat about_myself
Hello there my name is FennecTECH I am a novice arch user though I am here to learn I live in central Minnesota where I hangout in the console and make my way into X11. Nice to meet you all! Enjoy my home directory feel free to poke around. There is a solution to every problem, so long as you do not break the laws of physics.
=^_^=
[FennecTECH@ArchOS ~]$
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That's unlikely, but you may run smartctl to see if the disk reports any errors. Maybe fsck as well.
Probably you are dealing with some bug which causes the btrfs driver to perform lots of some useless work. You may switch to another kernel version unless you feel like debugging btrfs.
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[fennectech@archos ~]$ sudo btrfs scrub status /dev/sda1
[sudo] password for fennectech:
scrub status for 9d7de4cb-d0a6-4b63-af65-9e055197808d
scrub started at Mon Nov 17 04:39:43 2014 and finished after 2152 seconds
total bytes scrubbed: 76.22GiB with 56 errors
error details: read=34 csum=22
corrected errors: 3, uncorrectable errors: 53, unverified errors: 0
scrub died less than half way through
[FennecTECH@ArchOS ~]$ cat about_myself
Hello there my name is FennecTECH I am a novice arch user though I am here to learn I live in central Minnesota where I hangout in the console and make my way into X11. Nice to meet you all! Enjoy my home directory feel free to poke around. There is a solution to every problem, so long as you do not break the laws of physics.
=^_^=
[FennecTECH@ArchOS ~]$
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would bad sectors cause this problem?
I think it's possible given your circumstances. You are using a disk which is rapidly failing. Your system has to constantly deal with that.
Backstory: https://bbs.archlinux.org/viewtopic.php?id=186883
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I suggest to contact btrfs maillist and report the problem there.
It looks like an upstream bug that hangs kernel when reading broken sector. btrfs should be smarter, something like mark sector as broken after a few retries and never read it again.
Read it before posting http://www.catb.org/esr/faqs/smart-questions.html
Ruby gems repository done right https://bbs.archlinux.org/viewtopic.php?id=182729
Fast initramfs generator with security in mind https://wiki.archlinux.org/index.php/Booster
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where can i find the mailing list and how do i join in im barely getting used to forums lol
[FennecTECH@ArchOS ~]$ cat about_myself
Hello there my name is FennecTECH I am a novice arch user though I am here to learn I live in central Minnesota where I hangout in the console and make my way into X11. Nice to meet you all! Enjoy my home directory feel free to poke around. There is a solution to every problem, so long as you do not break the laws of physics.
=^_^=
[FennecTECH@ArchOS ~]$
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i do know the disk is on its way out and has several bad sectors im working on getting money togther for a new harddrive
[FennecTECH@ArchOS ~]$ cat about_myself
Hello there my name is FennecTECH I am a novice arch user though I am here to learn I live in central Minnesota where I hangout in the console and make my way into X11. Nice to meet you all! Enjoy my home directory feel free to poke around. There is a solution to every problem, so long as you do not break the laws of physics.
=^_^=
[FennecTECH@ArchOS ~]$
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well after talking on the btrfs mailing list the problem is definitly btrfs trying to deal with crappy firmware not dealing with bad sectors and leaving them to the filesystem wich btrfs isnt prepaired for
[FennecTECH@ArchOS ~]$ cat about_myself
Hello there my name is FennecTECH I am a novice arch user though I am here to learn I live in central Minnesota where I hangout in the console and make my way into X11. Nice to meet you all! Enjoy my home directory feel free to poke around. There is a solution to every problem, so long as you do not break the laws of physics.
=^_^=
[FennecTECH@ArchOS ~]$
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