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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

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Filesystem mounting ro with heavy NVMe I/O (postimg.cc)

submitted 9 months ago* (last edited 9 months ago) by [email protected] to c/[email protected]

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Hi everyone,

I have been experiencing some weird problems lately, starting with the OS becoming unresponsive "randomly". After reinstalling multiple times (different filesystems, tried XFS and BTRFS, different nvme slots with different nvme drives, same results) I have narrowed it down to heavy IO operations on the nvme drive. Most of the time, I can't even pull up dmesg, and force shutdown, as ZSH gives an Input/Output error no matter the command. A couple of times I was lucky enough for the system to stay somewhat responsive, so that I could pull up dmesg.

It gives a controller is down, resetting message, which I've seen on archwiki for some older Kingston and Samsung nvmes, and gives Kernel parameters to try (didn't help much, they pretty much disable aspm on pcie).

What did help a bit was reverting a recent bios upgrade on my MSI Z490 Tomahawk, causing the system to not crash immediately with heavy I/O, but rather mount as ro, but the issue still persists. I have additionally run memtest86 for 8 passes, no issues there.

I have tried running the lts Kernel, but this didn't help. The strange thing is, this error does not happen on Windows 11.

Has anyone experienced this before, and can give some pointers on what to try next? I'm at my wits end here. EDIT: When this issue first appeared, I assumed the Kioxia drive was defective, which the manufacturer replaced after. This issue still happens with the new replacement drive too, as well as the Samsung drive. I thus assume, that neither drives are defective (smartctl also seems to think so)

Here are hardware and software details:

Arch with latest Zen Kernel, 6.7.4, happened with other, older kernels too though, tried regular, lts and zen
BTRFS on LUKS
i9-10850k
MSI z490 Tomahawk
GSkill 3200 MHz RAM, 32GB, DDR4
Samsung 970 Evo 1TB & Kioxia Exceria G2 1TB (tested both drives, in both slots each, over multiple installs)
Vega 56 GPU
Be quiet Straight Power 11 750W PSU

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[–] [email protected] 3 points 9 months ago

Both drives were encrypted (Samsung as root drive, encrypted except for the efi partition, and kioxia fully encrypted and mounted via crypttab and a key file residing on the encrypted Samsung partition for automatic unlock), although now as I have been reinstalling quite often, and couldn't be bothered to set up the encryption for the second drive so it stays unused atm. Trim is enabled via a kernel parameter, but not in the fstab directly anymore (as I'm running BTRFS now, and from what I've gathered passing the ssd option to BTRFS is enough to enable trim, verified with lsblk --discard)