On 03/21/18 12:07, Hartmann, O. wrote: > Hello. > > Incident: CURRENT r331284 can be brought down reliably with an USB > flash drive plugged in and out without mounting or doing anything with > it. > > I first recognized the incident with a ZFS on a SanDisk 32GB USB 3.0 > flash drive. Plugging the USB flash and typing "zpool import" revealed > the very first time I issue this command the existence of the ZFS > fielsystem. Usually, I import then this USB drive for maintenance > purposes. Now, typing "zpool import" a second time, nothing is shown at > all. I see that umass0 has been destroyed - although the USB drive is > still plugged in. > > Pulling the USB flash drive without having actually imported the > ZFS makes CURRENT crash and reboot. > > I tried different USB flash drives, 3.0, 2.0, different boxes running > CURRENT, different hardware (Notebooks, Fujitsu workstations, HP > servers). It seems that the USB subsystem does have a serious problem - > not the ZFS. I can plugin the USB and then unplug it and after two or > three times doing this, the box goes down. > > > Does anyone else observe this bug? > > By the way: all ZFS USB drives I use or all other USB flash drives > cause no problem on FreeBSD 11.1-RELENG-p7! > I've seen something similar, but I thought the issue was fixed by: https://reviews.freebsd.org/D14456 --HPSReceived on Wed Mar 21 2018 - 10:23:02 UTC
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