Comment 28 for bug 1979885

Thanks for these files. I'm still having trouble reproducing the crash, but looking at logs and strace, it looks like it could be related to device mapper devices, like LVM.

I found https://bitcoden.com/answers/how-do-i-resolve-an-error-with-the-pnfs-mapping-daemon where someone said the problem started happening after a logical volume was created, but still couldn't reproduce it.

Do you have some particular LVM setup, or something out of the ordinary in that area? I tried creating a simple VG, then two LVs, even rebooted in between, but blkmapd does not crash.

There is also https://www.spinics.net/lists/linux-nfs/msg87598.html that someone else pointed out, but it's unacknowledged in the mailing list, and I don't see similar commits in the upstream code yet.