[Bug 861656] Re: Kernel oops when nbd device is removed before it is unmounted
Serge Hallyn
861656 at bugs.launchpad.net
Tue Oct 4 14:31:51 UTC 2011
Quoting Dave Walker (davewalker at ubuntu.com):
> @Serge, Please can you propose your nova patch against upstream trunk?
> Would really like to get it merged, or even reviewed for trunk and then
> cherry pick it back.
https://lists.launchpad.net/openstack/msg04463.html
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https://bugs.launchpad.net/bugs/861656
Title:
Kernel oops when nbd device is removed before it is unmounted
Status in “linux” package in Ubuntu:
Confirmed
Status in “nova” package in Ubuntu:
Confirmed
Status in “qemu-kvm” package in Ubuntu:
Confirmed
Bug description:
My host has xfs rootfs. It runs openstack with lxc, which creates the
container root filesystems on qemu-nbd block devices with ext4fs by
default.
For probably 1 in 8 containers, when the host is working hard, I end
up with ext4 errors which in the end prevent the host from cleanly
rebooting. http://people.canonical.com/~serge/20110927_001.jpg is one
example. Here is another one:
[ 178.736380] JBD2: I/O error detected when updating journal superblock for nbd13-8.
[ 178.736567] journal commit I/O error
[ 182.374588] br100: port 4(veth2) entering forwarding state
[ 182.376240] device veth2 left promiscuous mode
[ 182.376245] br100: port 4(veth2) entering disabled state
[ 182.983726] nbd14: NBD_DISCONNECT
[ 182.983979] nbd14: Receive control failed (result -32)
[ 182.984075] nbd14: queue cleared
[ 182.984525] nbd14: Attempted send on closed socket
[ 182.984530] end_request: I/O error, dev nbd14, sector 328280
[ 182.984533] Buffer I/O error on device nbd14, logical block 41035
[ 182.984538] EXT4-fs warning (device nbd14): ext4_end_bio:242: I/O error writing to inode 32327 (offset 0 size 4096 starting block 41036)
[ 182.984597] nbd14: Attempted send on closed socket
[ 182.984600] end_request: I/O error, dev nbd14, sector 328256
[ 182.984602] Buffer I/O error on device nbd14, logical block 41032
[ 182.984605] EXT4-fs warning (device nbd14): ext4_end_bio:242: I/O error writing to inode 32342 (offset 0 size 4096 starting block 41033)
[ 182.984770] JBD2: Detected IO errors while flushing file data on nbd14-8
[ 182.984776] nbd14: Attempted send on closed socket
[ 182.984779] end_request: I/O error, dev nbd14, sector 1049856
[ 182.984794] Aborting journal on device nbd14-8.
[ 182.984802] nbd14: Attempted send on closed socket
[ 182.984804] end_request: I/O error, dev nbd14, sector 1048576
[ 182.984807] Buffer I/O error on device nbd14, logical block 131072
[ 182.984809] lost page write due to I/O error on nbd14
[ 182.984812] JBD2: I/O error detected when updating journal superblock for nbd14-8.
[ 182.984825] journal commit I/O error
[ 184.789984] br100: port 3(veth1) entering forwarding state
[ 184.791634] device veth1 left promiscuous mode
[ 184.791639] br100: port 3(veth1) entering disabled state
[ 185.236242] nbd12: NBD_DISCONNECT
[ 185.236362] nbd12: Receive control failed (result -32)
[ 185.236418] nbd12: queue cleared
[ 185.236734] nbd12: Attempted send on closed socket
[ 185.236737] end_request: I/O error, dev nbd12, sector 328280
[ 185.236740] Buffer I/O error on device nbd12, logical block 41035
[ 185.236745] EXT4-fs warning (device nbd12): ext4_end_bio:242: I/O error writing to inode 32327 (offset 0 size 4096 starting block 41036)
[ 185.236804] nbd12: Attempted send on closed socket
[ 185.236806] end_request: I/O error, dev nbd12, sector 328256
[ 185.236809] Buffer I/O error on device nbd12, logical block 41032
[ 185.236812] EXT4-fs warning (device nbd12): ext4_end_bio:242: I/O error writing to inode 32342 (offset 0 size 4096 starting block 41033)
[ 185.236998] JBD2: Detected IO errors while flushing file data on nbd12-8
[ 185.237005] nbd12: Attempted send on closed socket
[ 185.237007] end_request: I/O error, dev nbd12, sector 1049856
[ 185.237025] Aborting journal on device nbd12-8.
[ 185.237034] nbd12: Attempted send on closed socket
[ 185.237036] end_request: I/O error, dev nbd12, sector 1048576
[ 185.237039] Buffer I/O error on device nbd12, logical block 131072
[ 185.237041] lost page write due to I/O error on nbd12
[ 185.237044] JBD2: I/O error detected when updating journal superblock for nbd12-8.
[ 185.237059] journal commit I/O error
[ 185.342363] nbd14: Attempted send on closed socket
[ 185.342369] end_request: I/O error, dev nbd14, sector 0
[ 185.342374] Buffer I/O error on device nbd14, logical block 0
[ 185.342375] lost page write due to I/O error on nbd14
[ 185.342388] EXT4-fs error (device nbd14): ext4_put_super:771: Couldn't clean up the journal
[ 185.342392] EXT4-fs (nbd14): Remounting filesystem read-only
[ 185.342394] EXT4-fs (nbd14): previous I/O error to superblock detected
[ 185.342399] nbd14: Attempted send on closed socket
[ 185.342401] end_request: I/O error, dev nbd14, sector 0
[ 185.342404] Buffer I/O error on device nbd14, logical block 0
[ 185.342405] lost page write due to I/O error on nbd14
[ 185.352231] nbd12: Attempted send on closed socket
[ 185.352236] end_request: I/O error, dev nbd12, sector 0
[ 185.352239] Buffer I/O error on device nbd12, logical block 0
[ 185.352241] lost page write due to I/O error on nbd12
[ 185.352252] EXT4-fs error (device nbd12): ext4_put_super:771: Couldn't clean up the journal
[ 185.352256] EXT4-fs (nbd12): Remounting filesystem read-only
[ 185.352258] EXT4-fs (nbd12): previous I/O error to superblock detected
[ 178.733767] nbd13: NBD_DISCONNECT
[ 178.733865] nbd13: Receive control failed (result -32)
[ 178.733911] nbd13: shutting down socket
[ 178.733914] nbd13: queue cleared
[ 178.734250] nbd13: Attempted send on closed socket
[ 178.734254] end_request: I/O error, dev nbd13, sector 328280
[ 178.734257] Buffer I/O error on device nbd13, logical block 41035
[ 178.734262] EXT4-fs warning (device nbd13): ext4_end_bio:242: I/O error writing to inode 32327 (offset 0 size 4096 starting block 41036)
[ 178.734334] nbd13: Attempted send on closed socket
[ 178.734336] end_request: I/O error, dev nbd13, sector 328256
[ 178.734338] Buffer I/O error on device nbd13, logical block 41032
[ 178.734342] EXT4-fs warning (device nbd13): ext4_end_bio:242: I/O error writing to inode 32342 (offset 0 size 4096 starting block 41033)
[ 178.736325] JBD2: Detected IO errors while flushing file data on nbd13-8
[ 178.736339] nbd13: Attempted send on closed socket
[ 178.736343] end_request: I/O error, dev nbd13, sector 1049856
[ 178.736361] Aborting journal on device nbd13-8.
[ 178.736370] nbd13: Attempted send on closed socket
[ 178.736372] end_request: I/O error, dev nbd13, sector 1048576
[ 178.736375] Buffer I/O error on device nbd13, logical block 131072
[ 178.736377] lost page write due to I/O error on nbd13
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
ApportVersion: 1.23-0ubuntu2
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: serge 18231 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf6afc000 irq 47'
Mixer name : 'Conexant CX20583 (Pebble HSF)'
Components : 'HDA:14f15067,102802d8,00100300'
Controls : 9
Simple ctrls : 6
DistroRelease: Ubuntu 11.10
HibernationDevice: RESUME=UUID=6dd34b33-9e9e-46ef-9cd8-3ce1c68b7da3
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2)
MachineType: Dell Inc. Vostro 1220
NonfreeKernelModules: wl
Package: linux (not installed)
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=d31d979b-16d0-4522-9043-23b4f85aeb89 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
RelatedPackageVersions:
linux-restricted-modules-3.0.0-12-generic N/A
linux-backports-modules-3.0.0-12-generic N/A
linux-firmware 1.60
Tags: oneiric running-unity
Uname: Linux 3.0.0-12-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout kvm libvirtd lpadmin plugdev sambashare
dmi.bios.date: 10/15/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.0
dmi.board.name: 0X482M
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.3.0:bd10/15/2009:svnDellInc.:pnVostro1220:pvr:rvnDellInc.:rn0X482M:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Vostro 1220
dmi.sys.vendor: Dell Inc.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
ApportVersion: 1.23-0ubuntu2
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: serge 7491 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf6afc000 irq 47'
Mixer name : 'Conexant CX20583 (Pebble HSF)'
Components : 'HDA:14f15067,102802d8,00100300'
Controls : 9
Simple ctrls : 6
DistroRelease: Ubuntu 11.10
HibernationDevice: RESUME=UUID=6dd34b33-9e9e-46ef-9cd8-3ce1c68b7da3
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110921.2)
MachineType: Dell Inc. Vostro 1220
NonfreeKernelModules: wl
Package: linux (not installed)
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=d31d979b-16d0-4522-9043-23b4f85aeb89 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
RelatedPackageVersions:
linux-restricted-modules-3.0.0-12-generic N/A
linux-backports-modules-3.0.0-12-generic N/A
linux-firmware 1.60
Tags: oneiric running-unity
Uname: Linux 3.0.0-12-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout kvm libvirtd lpadmin plugdev sambashare
dmi.bios.date: 10/15/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.0
dmi.board.name: 0X482M
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.3.0:bd10/15/2009:svnDellInc.:pnVostro1220:pvr:rvnDellInc.:rn0X482M:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Vostro 1220
dmi.sys.vendor: Dell Inc.
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