Public bug reported:
Setup - A Dell EMC 14th Gen AMD server, with ESXi 6.7 as host and Ubuntu
18.04 (latest updates) guest.
Guest has 3 data disks apart from the boot disk. All these disks are exposed
through "ParaVirtual SCSI controller" from the host ESXi 6.7.
Run diskio stress on all the 3 data disks for overnight.
Guest goes unresponsive (even ping fails) in between.
Only way to recover is to reset the guest.
Logs do not indicate much on this error.
Rarely we get a crash on the Guest-screen. Attaching 2 screenshots of different
hits.
We have tried mainline kernel v4.18-rc-2 and have hit the issue there as
well.
Changing the SCSI controller to "LSI Logic SAS adapter" helps and we
have not seen any crash/hang here.
** Affects: dellserver
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: bionic
** Attachment added: "log files inside /var/log/"
https://bugs.launchpad.net/bugs/1778717/+attachment/5156769/+files/var-log-ubuntu1804-vm.zip
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https://bugs.launchpad.net/bugs/1778717
Title:
Ubuntu 18.04 guest hangs during diskio stress
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