Public bug reported:
[Impact]
nvme show-regs has been found to cause certain Samsung controllers
(MZ1L21T9HCLS in particular) to go offline.
[Test Case]
Run `nvme show-regs` on an effected controller device. Messages similar to this
will appear in dmesg:
[963314.311332] nvme nvme2: controller is down; will reset: CSTS=0x3,
PCI_STATUS=0x10
[963334.951328] nvme nvme2: Device not ready; aborting reset
[963334.963114] nvme nvme2: Removing after probe failure status: -19
[963334.999600] blk_update_request: I/O error, dev nvme2n1, sector 1050640 op
0x1:(WRITE) flags 0x800 phys_seg 1 prio class 0
[963335.023410] md: super_written gets error=10
[963335.033842] md/raid1:md0: Disk failure on nvme2n1p2, disabling device.
md/raid1:md0: Operation continuing on 1 devices.
[ +0.009599] XFS (md127): log I/O error -5
[ +0.015136] XFS (md127): xfs_do_force_shutdown(0x2) called from line 1250 of
file fs/xfs/xfs_log.c. Return address = 00000000d0ea8129
[ +0.000001] XFS (md127): Log I/O Error Detected. Shutting down filesystem
[ +0.009290] XFS (md127): Please unmount the filesystem and rectify the
problem(s)
[Fix]
This has been fixed upstream with the following commits:
https://github.com/linux-nvme/nvme-cli/commit/33e60ff64a043b189d2661543b417b21b6f3667b
https://github.com/linux-nvme/nvme-cli/commit/d43d545a68cc6cea5ac78fda4edeedf3b5198847
[What Could Go Wrong]
** Affects: nvme-cli (Ubuntu)
Importance: Undecided
Status: New
** Affects: nvme-cli (Ubuntu Groovy)
Importance: Undecided
Status: New
** Affects: nvme-cli (Ubuntu Hirsute)
Importance: Undecided
Status: New
** Affects: nvme-cli (Ubuntu Impish)
Importance: Undecided
Status: New
** Affects: nvme-cli (Debian)
Importance: Unknown
Status: Unknown
** Also affects: nvme-cli (Ubuntu Groovy)
Importance: Undecided
Status: New
** Also affects: nvme-cli (Ubuntu Hirsute)
Importance: Undecided
Status: New
** Also affects: nvme-cli (Ubuntu Impish)
Importance: Undecided
Status: New
** Bug watch added: Debian Bug tracker #989840
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989840
** Also affects: nvme-cli (Debian) via
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=989840
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/1931886
Title:
show-regs can cause some samsung controllers to go offline
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