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Groups > linux.debian.kernel > #59855 > unrolled thread
| Started by | Yves-Alexis Perez <corsac@debian.org> |
|---|---|
| First post | 2018-01-06 15:20 +0100 |
| Last post | 2018-01-06 16:10 +0100 |
| Articles | 2 — 2 participants |
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Bug#880554: xen domu freezes with kernel linux-image-4.9.0-4-amd64 Yves-Alexis Perez <corsac@debian.org> - 2018-01-06 15:20 +0100
Bug#880554: xen domu freezes with kernel linux-image-4.9.0-4-amd64 Valentin Vidic <Valentin.Vidic@CARNet.hr> - 2018-01-06 16:10 +0100
| From | Yves-Alexis Perez <corsac@debian.org> |
|---|---|
| Date | 2018-01-06 15:20 +0100 |
| Subject | Bug#880554: xen domu freezes with kernel linux-image-4.9.0-4-amd64 |
| Message-ID | <v4Xuh-2jA-1@gated-at.bofh.it> |
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On Fri, 2017-11-17 at 07:39 +0100, Valentin Vidic wrote: > Hi, > > The problem seems to be caused by the new multi-queue xen blk driver > and I was advised by the Xen devs to increase the gnttab_max_frames=256 > parameter for the hypervisor. This has solved the blocking issue > for me and it has been running without problems for a few months now. I'm not really fluent in Xen, but does this relate to the kernel in dom0 or one of the domU then? > > I/O to LUNs hang / stall under high load when using xen-blkfront > https://www.novell.com/support/kb/doc.php?id=7018590 According to that link, the fix seems to be configuration rather than code. Does this mean this bug against the kernel should be closed? Regards, -- Yves-Alexis
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| From | Valentin Vidic <Valentin.Vidic@CARNet.hr> |
|---|---|
| Date | 2018-01-06 16:10 +0100 |
| Message-ID | <v4YgG-2Qv-9@gated-at.bofh.it> |
| In reply to | #59855 |
On Sat, Jan 06, 2018 at 03:08:26PM +0100, Yves-Alexis Perez wrote: > According to that link, the fix seems to be configuration rather than code. > Does this mean this bug against the kernel should be closed? Yes, the problem seems to be in the Xen hypervisor and not the Linux kernel itself. The default value for the gnttab_max_frames parameter needs to be increased to avoid domU disk IO hangs, for example: GRUB_CMDLINE_XEN="dom0_mem=10240M gnttab_max_frames=256" So either close the bug or reassign it to xen-hypervisor package so they can increase the default value for this parameter in the hypervisor code. -- Valentin
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