Public bug reported:
This is a regression.
Seen on 3 different machines, so confirming immediately.
I'm not sure whether this relates to the kernel or to main Linux
utilities, but this behaviour seems to relate to the latest updates to :
3.5.0-17-generic (either 32 or 64 bits)
Since, on 3 machines, "df" and "mount" seems unable to determine the
device for the mounted root filesystem, i.e. :
# df -h / /boot /home
Filesystem Size Used Avail Use% Mounted on
- 913G 275G 609G 32% /
/dev/sda2 1,1G 455M 567M 45% /boot
/dev/mapper/VG1-BTR_POOL 913G 275G 609G 32% /home
# mount | egrep "[[:space:]]/(boot|home)?[[:space:]]"
/dev/sda2 on /boot type btrfs
(rw,relatime,subvol=UBUNTU/@boot,space_cache,autodefrag)
/dev/mapper/VG1-BTR_POOL on /home type btrfs
(rw,relatime,subvol=UBUNTU/@home,space_cache,autodefrag,compress=lzo)
...where /proc/mounts shows it :
# egrep "[[:space:]]/(boot|home)?[[:space:]]" /proc/mounts
rootfs / rootfs rw 0 0
/dev/mapper/VG1-BTR_POOL / btrfs
rw,relatime,compress=lzo,space_cache,autodefrag 0 0
/dev/sda2 /boot btrfs rw,relatime,space_cache,autodefrag 0 0
/dev/mapper/VG1-BTR_POOL /home btrfs
rw,relatime,compress=lzo,space_cache,autodefrag 0 0
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-17-generic 3.5.0-17.27
ProcVersionSignature: Ubuntu 3.5.0-17.27-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.6.1-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: michel 3320 F.... pulseaudio
/dev/snd/controlC0: michel 3320 F.... pulseaudio
CRDA:
country FR:
(2402 - 2482 @ 40), (N/A, 20)
(5170 - 5250 @ 40), (N/A, 20)
(5250 - 5330 @ 40), (N/A, 20), DFS
(5490 - 5710 @ 40), (N/A, 27), DFS
CheckboxSubmission: 1ea6109db29b53f721a523a77b7f3abf
CheckboxSystem: d00f84de8a555815fa1c4660280da308
Date: Mon Oct 8 17:55:44 2012
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=b49c11a6-09a7-4da7-9efa-500df0c9d257
MachineType: TOSHIBA SATELLITE L735
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/UBUNTU/@boot/vmlinuz-3.5.0-17-generic
root=/dev/mapper/VG1-BTR_POOL ro rootflags=subvol=UBUNTU/@ rdblacklist=nouveau
nouveau.blacklist=1 acpi_osi=Linux acpi_backlight=vendor quiet splash
RelatedPackageVersions:
linux-restricted-modules-3.5.0-17-generic N/A
linux-backports-modules-3.5.0-17-generic N/A
linux-firmware 1.94
SourcePackage: linux
StagingDrivers: rts5139
UpgradeStatus: Upgraded to quantal on 2012-08-28 (41 days ago)
dmi.bios.date: 06/26/2012
dmi.bios.vendor: INSYDE
dmi.bios.version: 2.50
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: Intel Corp.
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: OEM Chassis Manufacturer
dmi.chassis.version: OEM Chassis Version
dmi.modalias:
dmi:bvnINSYDE:bvr2.50:bd06/26/2012:svnTOSHIBA:pnSATELLITEL735:pvrPSK0CE-00900LFR:rvnIntelCorp.:rnBaseBoardProductName:rvrBaseBoardVersion:cvnOEMChassisManufacturer:ct10:cvrOEMChassisVersion:
dmi.product.name: SATELLITE L735
dmi.product.version: PSK0CE-00900LFR
dmi.sys.vendor: TOSHIBA
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug quantal running-unity staging
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1063886
Title:
[Regression] "mount" or "df" don't see root fs anymore
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