[Bug 1927866] Re: Root filesystem becomes readonly frequenty freezing system

https://lkml.org/lkml/2021/6/25/52

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https://bugs.launchpad.net/bugs/1927866

Title:
Root filesystem becomes readonly frequenty freezing system

Status in linux package in Ubuntu:
Confirmed

Bug description:
I have a brand new Lenovo Ideapad Flex 5.14 which came with Windows 10
and I have installed Ubuntu 21.04 with dual boot.

I am running into this problem where the root filesystem becomes
readonly and the system freezes with a screen full of errors shown
about unable to write to filesystem.

I booted into a live boot usb and did fsck and e2fsck but did not see
any errors there. I read online that this could be because of io
errors but smartctl and fsck does not show any errors

So I was wondering if this could be a bug vs a hardward issue. Please
let me know if you need any further information from the system.

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fdisk -l /dev/nvme0n1
Disk /dev/nvme0n1: 476.94 GiB, 512110190592 bytes, 1000215216 sectors
Disk model: WDC PC SN530 SDBPMPZ-512G-1101
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: E8803E28-C4F7-4FA5-9B6D-0F3CAB7027A5

Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 534527 532480 260M EFI System
/dev/nvme0n1p2 534528 567295 32768 16M Microsoft reserved
/dev/nvme0n1p3 567296 199446527 198879232 94.8G Microsoft basic data
/dev/nvme0n1p4 998166528 1000214527 2048000 1000M Windows recovery environmen
/dev/nvme0n1p5 199446528 203352063 3905536 1.9G Linux filesystem
/dev/nvme0n1p6 203352064 219353087 16001024 7.6G Linux swap
/dev/nvme0n1p7 219353088 414664703 195311616 93.1G Linux filesystem
/dev/nvme0n1p8 414664704 998166527 583501824 278.2G Microsoft basic data

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smartctl -a /dev/nvme0
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.11.0-16-generic] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Number: WDC PC SN530 SDBPMPZ-512G-1101
Serial Number: 205135806243
Firmware Version: 21160001
PCI Vendor/Subsystem ID: 0x15b7
IEEE OUI Identifier: 0x001b44
Total NVM Capacity: 512,110,190,592 [512 GB]
Unallocated NVM Capacity: 0
Controller ID: 1
NVMe Version: 1.4
Number of Namespaces: 1
Namespace 1 Size/Capacity: 512,110,190,592 [512 GB]
Namespace 1 Formatted LBA Size: 512
Namespace 1 IEEE EUI-64: 001b44 8b484daff7
Local Time is: Sun May 9 12:45:05 2021 EDT
Firmware Updates (0x14): 2 Slots, no Reset required
Optional Admin Commands (0x0017): Security Format Frmw_DL Self_Test
Optional NVM Commands (0x005f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat Timestmp
Log Page Attributes (0x1e): Cmd_Eff_Lg Ext_Get_Lg Telmtry_Lg Pers_Ev_Lg
Maximum Data Transfer Size: 128 Pages
Warning Comp. Temp. Threshold: 80 Celsius
Critical Comp. Temp. Threshold: 85 Celsius
Namespace 1 Features (0x02): NA_Fields

Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
 0 + 3.50W 2.10W - 0 0 0 0 0 0
 1 + 2.40W 1.60W - 0 0 0 0 0 0
 2 + 1.90W 1.50W - 0 0 0 0 0 0
 3 - 0.0250W - - 3 3 3 3 3900 11000
 4 - 0.0050W - - 4 4 4 4 5000 39000

Supported LBA Sizes (NSID 0x1)
Id Fmt Data Metadt Rel_Perf
 0 + 512 0 2
 1 - 4096 0 1

=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

SMART/Health Information (NVMe Log 0x02)
Critical Warning: 0x00
Temperature: 35 Celsius
Available Spare: 100%
Available Spare Threshold: 10%
Percentage Used: 0%
Data Units Read: 624,535 [319 GB]
Data Units Written: 526,042 [269 GB]
Host Read Commands: 4,462,163
Host Write Commands: 4,686,788
Controller Busy Time: 25
Power Cycles: 20
Power On Hours: 76
Unsafe Shutdowns: 9
Media and Data Integrity Errors: 0
Error Information Log Entries: 1
Warning Comp. Temperature Time: 0
Critical Comp. Temperature Time: 0

Error Information (NVMe Log 0x01, 16 of 256 entries)
No Errors Logged

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cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/nvme0n1p7 during installation
UUID=3167581c-60b0-4db8-972c-a8dfafc882c5 / ext4 errors=remount-ro 0 1
# /boot was on /dev/nvme0n1p5 during installation
UUID=9c06f7c8-ad3b-4b90-b32c-4d4099b4548d /boot ext4 defaults 0 2
# /boot/efi was on /dev/nvme0n1p1 during installation
UUID=6C28-8155 /boot/efi vfat umask=0077 0 1
# swap was on /dev/nvme0n1p6 during installation
UUID=38034881-4f37-4d16-8cc5-e343f61b4ef7 none swap sw 0 0
/dev/disk/by-uuid/0F7EA5A832F72C99 /mnt/0F7EA5A832F72C99 auto nosuid,nodev,nofail,x-gvfs-show 0 0

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nvme error-log shows the same error message as below, all 64 of them
are identical. Pasting one item here.

nvme error-log /dev/nvme0
Error Log Entries for device:nvme0 entries:64
.................
Entry[ 0]
.................
error_count : 0
sqid : 0
cmdid : 0
status_field : 0(SUCCESS: The command completed successfully)
parm_err_loc : 0
lba : 0
nsid : 0
vs : 0
trtype : The transport type is not indicated or the error is not transport related.
cs : 0
trtype_spec_info: 0
.................
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: anoopjohn 1695 F.... pulseaudio
/dev/snd/pcmC1D0p: anoopjohn 1695 F...m pulseaudio
/dev/snd/controlC0: anoopjohn 1695 F.... pulseaudio
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 21.04
InstallationDate: Installed on 2021-04-30 (11 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
MachineType: LENOVO 82HU
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.11.0-16-generic root=UUID=3167581c-60b0-4db8-972c-a8dfafc882c5 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
RelatedPackageVersions:
linux-restricted-modules-5.11.0-16-generic N/A
linux-backports-modules-5.11.0-16-generic N/A
linux-firmware 1.197
Tags: hirsute wayland-session
Uname: Linux 5.11.0-16-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 02/23/2021
dmi.bios.release: 1.19
dmi.bios.vendor: LENOVO
dmi.bios.version: GJCN19WW
dmi.board.asset.tag: No Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 31
dmi.chassis.vendor: LENOVO
dmi.chassis.version: IdeaPad Flex 5 14ALC05
dmi.ec.firmware.release: 1.12
dmi.modalias: dmi:bvnLENOVO:bvrGJCN19WW:bd02/23/2021:br1.19:efr1.12:svnLENOVO:pn82HU:pvrIdeaPadFlex514ALC05:rvnLENOVO:rnLNVNB161216:rvrSDK0J40709WIN:cvnLENOVO:ct31:cvrIdeaPadFlex514ALC05:
dmi.product.family: IdeaPad Flex 5 14ALC05
dmi.product.name: 82HU
dmi.product.sku: LENOVO_MT_82HU_BU_idea_FM_IdeaPad Flex 5 14ALC05
dmi.product.version: IdeaPad Flex 5 14ALC05
dmi.sys.vendor: LENOVO

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