dmesg output for "mkfs.btrfs -f $DEV0" Jan 30 07:34:39 modoc kernel: [15133.052549] BTRFS: device fsid 835cd012-615c-4486-ae87-c32e13eaf564 devid 1 transid 3 /dev/loop0
dmesg output for "mount $DEV0 $MNT" Jan 30 07:35:41 modoc kernel: [15195.038642] BTRFS info (device loop0): disk space caching is enabled Jan 30 07:35:41 modoc kernel: [15195.038649] BTRFS: has skinny extents Jan 30 07:35:41 modoc kernel: [15195.042148] BTRFS: creating UUID tree Jan 30 07:35:41 modoc kernel: [15195.138720] BTRFS: failed to create the UUID tree -28 Jan 30 07:35:41 modoc kernel: [15195.246320] BTRFS: open_ctree failed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1813863 Title: Unable to mount a btrfs filesystem smaller than 320M on Xenial P8 Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Confirmed 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=/tmp/test0.img # DEV0=`losetup -f` # truncate --size 256M $TMPIMG0 # losetup $DEV0 $TMPIMG0 # mkfs.btrfs -f $DEV0 btrfs-progs v4.4 See http://btrfs.wiki.kernel.org for more information. Performing full device TRIM (256.00MiB) ... Label: (null) UUID: ca007094-ddd4-42e9-bd6d-78c6de03dc66 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-4.4.0-141-generic 4.4.0-141.167 ProcVersionSignature: Ubuntu 4.4.0-141.167-generic 4.4.162 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/mapper/mpath0-part2 ro console=hvc0 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@bos02-ppc64el-009) (gcc version 5.4.0 20160609 (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.10) ) #167-Ubuntu SMP Wed Dec 5 10:33:00 UTC 2018 RelatedPackageVersions: linux-restricted-modules-4.4.0-141-generic N/A linux-backports-modules-4.4.0-141-generic N/A 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1813863/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
