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** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1904641
Title:
bizare btrfs bug
Status in linux package in Ubuntu:
Confirmed
Bug description:
synopsis:
root@odin:/home/lawrence_danna# btrfs subvol show /data/
/
Name: <FS_TREE>
UUID: 853d0925-fafc-4b69-9efa-b970fb93a419
Parent UUID: -
Received UUID: -
Creation time: 2020-09-28 22:44:37 -0700
Subvolume ID: 5
Generation: 57295
Gen at creation: 0
Parent ID: 0
Top level ID: 0
Flags: -
Snapshot(s):
root@odin:/home/lawrence_danna# btrfs subvol show /data/ | cat
ERROR: Subvolume not found: No such file or directory
/
Name: <FS_TREE>
UUID: 853d0925-fafc-4b69-9efa-b970fb93a419
Parent UUID: -
Received UUID: -
Creation time: 2020-09-28 22:44:37 -0700
Subvolume ID: 5
Generation: 57295
Gen at creation: 0
Parent ID: 0
Top level ID: 0
Flags: -
Snapshot(s):
The error is caused by the kernel returning a nonexistant subvolume id to
"btrfs subvol" when
it tries to iterate all the subvoluems.
The problem does not exist on the mainline build
initrd.img-5.9.8-050908-generic
see discussion here:
https://lore.kernel.org/linux-btrfs/57831452-9DB1-4CDA-B6FD-
75BFACF48C2E@elder-
gods.org/T/#mcf1ce798cc1337131e5f9469e561df2bd4006a0b
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-54-generic 5.4.0-54.60
ProcVersionSignature: Ubuntu 5.4.0-54.60-generic 5.4.65
Uname: Linux 5.4.0-54-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.12
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/controlC0', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0',
'/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p',
'/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c',
'/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CasperMD5CheckResult: skip
Date: Tue Nov 17 17:24:57 2020
HibernationDevice: RESUME=UUID=0b152e23-5d36-4592-871c-92d4688bf162
InstallationDate: Installed on 2017-04-13 (1314 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 13fd:1e40 Initio Corporation INIC-1610P SATA bridge
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Lsusb-t:
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/16p, 480M
|__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 480M
MachineType: Supermicro SYS-5029S-TN2
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-54-generic
root=/dev/mapper/ubuntu--vg-root ro console=ttyS0,115200 console=ttyS0,115200
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-5.4.0-54-generic N/A
linux-backports-modules-5.4.0-54-generic N/A
linux-firmware 1.187.4
RfKill:
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-07-19 (121 days ago)
dmi.bios.date: 12/23/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2.0
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: X11SSV-Q
dmi.board.vendor: Supermicro
dmi.board.version: 1.01
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 1
dmi.chassis.vendor: Supermicro
dmi.chassis.version: 0123456789
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr2.0:bd12/23/2016:svnSupermicro:pnSYS-5029S-TN2:pvr0123456789:rvnSupermicro:rnX11SSV-Q:rvr1.01:cvnSupermicro:ct1:cvr0123456789:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: SYS-5029S-TN2
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 0123456789
dmi.sys.vendor: Supermicro
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