might be related to bug #1217189 which raises the possibility of hard
machine LOCK-UPS due to zram errors. I've had several such lock-ups on
precise after the most recent linux-lts-raring updates (and none before
that) that seemed to go away after disabling zram.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1218278
Title:
When creating a swap device using zram I get Buffer I/O errors
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
I use zram as swap device, but get Buffer I/O errors when creating a
swap device.
1. modprobe zram
2. echo 2097152000 > /sys/block/zram0/disksize
3. mkswap /dev/zram0
tail /varlog/syslog
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.003716] Buffer I/O error on device
zram0, logical block 511999
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.005792] Buffer I/O error on device
zram0, logical block 511999
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.007918] Buffer I/O error on device
zram0, logical block 511999
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.009930] Buffer I/O error on device
zram0, logical block 511999
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.011965] Buffer I/O error on device
zram0, logical block 511999
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.012917] Buffer I/O error on device
zram0, logical block 511999
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.013793] Buffer I/O error on device
zram0, logical block 511999
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.014680] Buffer I/O error on device
zram0, logical block 511999
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.015542] Buffer I/O error on device
zram0, logical block 511999
Aug 29 12:07:01 ubz10035sev kernel: [ 1044.016395] Buffer I/O error on device
zram0, logical block 511999
cat /proc/version_signature
Ubuntu 3.8.0-29.42-generic 3.8.13.
---
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/hwC0D3',
'/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D2c',
'/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211
not found.
CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order
/var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission
denied
DistroRelease: Ubuntu 13.04
MachineType: Hewlett-Packard HP Compaq 8100 Elite CMT PC
MarkForUpload: True
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: ro initrd=initrd.img nbdroot=10.7.28.49:9577
nbdswap=10.7.28.49:9573 clientid=lin BOOT_IMAGE=vmlinuz
ProcVersionSignature: Ubuntu 3.8.0-29.42-generic 3.8.13.5
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RfKill:
Tags: raring
Uname: Linux 3.8.0-29-generic x86_64
UpgradeStatus: Upgraded to raring on 2013-07-09 (51 days ago)
UserGroups: admin sudo
WifiSyslog:
dmi.bios.date: 12/16/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786H1 v01.02
dmi.board.asset.tag: 11618
dmi.board.name: 304Bh
dmi.board.vendor: Hewlett-Packard
dmi.chassis.asset.tag: 11618
dmi.chassis.type: 6
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvr786H1v01.02:bd12/16/2009:svnHewlett-Packard:pnHPCompaq8100EliteCMTPC:pvr:rvnHewlett-Packard:rn304Bh:rvr:cvnHewlett-Packard:ct6:cvr:
dmi.product.name: HP Compaq 8100 Elite CMT PC
dmi.sys.vendor: Hewlett-Packard
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