Unable to mount a btrfs filesystem smaller than 320M on Xenial P8
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
ubuntu-kernel-tests |
New
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned | ||
Bug Description
This issue will happen to a btrfs filesystem <= 320M, and this was not spotted on any other architecture / kernel. Only this one, X-4.4 and T-4.4
# TMPIMG0=
# DEV0=`losetup -f`
# truncate --size 256M $TMPIMG0
# losetup $DEV0 $TMPIMG0
# mkfs.btrfs -f $DEV0
btrfs-progs v4.4
See http://
Performing full device TRIM (256.00MiB) ...
Label: (null)
UUID: ca007094-
Node size: 65536
Sector size: 65536
Filesystem size: 256.00MiB
Block group profiles:
Data: single 8.00MiB
Metadata: DUP 40.00MiB
System: DUP 12.00MiB
SSD detected: no
Incompat features: extref, skinny-metadata
Number of devices: 1
Devices:
ID SIZE PATH
1 256.00MiB /dev/loop1
# mount $DEV0 $MNT
mount: mount /dev/loop1 on /tmp/mnt failed: No space left on device
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-
ProcVersionSign
Uname: Linux 4.4.0-141-generic ppc64le
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jan 30 03:23 seq
crw-rw---- 1 root audio 116, 33 Jan 30 03:23 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: ppc64el
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
Date: Wed Jan 30 03:35:17 2019
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
Lsusb:
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
PciMultimedia:
ProcFB:
ProcKernelCmdLine: root=/dev/
ProcLoadAvg: 0.00 0.05 0.09 1/1339 5297
ProcSwaps:
Filename Type Size Used Priority
/swap.img file 8388544 0 -1
ProcVersion: Linux version 4.4.0-141-generic (buildd@
RelatedPackageV
linux-
linux-
linux-firmware 1.157.21
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
cpu_cores: Number of cores present = 20
cpu_coreson: Number of cores online = 20
cpu_dscr: DSCR is 0
cpu_freq:
min: 3.694 GHz (cpu 159)
max: 3.694 GHz (cpu 1)
avg: 3.694 GHz
cpu_runmode:
Could not retrieve current diagnostics mode,
No kernel interface to firmware
cpu_smt: SMT=8
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