Date: Mon, 03 Sep 2018 11:17:09 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 231117] I/O lockups inside bhyve vms Message-ID: <bug-231117-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231117 Bug ID: 231117 Summary: I/O lockups inside bhyve vms Product: Base System Version: 11.2-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: niels@kristensen.io We're running bhyve VMs on ~10-20 hypervisors. Since upgrading everything to 11.2-RELEASE last week, we've seen i/o lockups inside different VMs on multiple of these hypervisors. The VMs also run FreeBSD 11.2, and both the hypervisors and the VMs run ZFS for backup and quota reasons. We havn't had any issues on 11.1, but when we ran 11.0, we had some problems with the ARC inside the VMs. The VM would be unable to make any disk i/o as we experience now as well, but in 11.0 the problem could be "resolved" by launching a memory hungry bin from tmpfs, causing ARC to release some memory, and then we got working i/o again. On 11.0 the affected VMs were generally i/o intensive VMs. Now we see random lockups on different workloads. The zvol timestamp on the hypervisors are not updated, so clearly writes fail to go through. Does anyone have some advise for debugging this issue further? -- You are receiving this mail because: You are the assignee for the bug.home | help
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