For the records.
QEMU patches:
https://lists.nongnu.org/archive/html/qemu-devel/2016-06/msg07586.html
Linux patches:
https://sourceforge.net/p/v9fs/mailman/message/35175775/
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I haven't worked on this topic in years.
** Changed in: qemu
Status: In Progress => Confirmed
** Changed in: qemu
Assignee: Greg Kurz (gkurz) => (unassigned)
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Hi Alex,
Well... it's slightly more than one patch in QEMU, and this also
requires some linux kernel side changes. And I really can't^W^Wdon't
want to invest more time there if no one helps. This being said, I see
more and more activity on 9p since Dominique Martinet has taken
maintainership.
Hi Maxim,
No I didn't...
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https://bugs.launchpad.net/bugs/1336794
Title:
9pfs does not honor open file handles on unlinked files
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Hi Jon,
This issue has always existed: the vhost code never got adapted to the
new memory layout since virtio 1.0 was introduced in QEMU 2.4. This
never broke anything on the field because the guest linux virtio drivers
seem to still be using the legacy layout, which is supported by virtio
1.0...
Public bug reported:
The vhost code currently assumes vring are mapped in memory following the
legacy virtio layout. This may cause QEMU to fail with virtio 1 devices
if the used ring is mapped below the descriptor table.
This got fixed upstream already and will be available in QEMU 2.8.
** Changed in: qemu
Status: Confirmed => In Progress
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https://bugs.launchpad.net/bugs/1336794
Title:
9pfs does not honor open file handles on unlinked files
To manage
** Changed in: qemu
Status: New => Confirmed
** Changed in: qemu
Assignee: (unassigned) => Greg Kurz (gkurz)
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https://bugs.launchpad.net/bugs/1336794
Title:
9pf
Latest work on the subject seems to be:
https://github.com/ericvh/linux/commit/eaf70223eac094291169f5a6de580351890162a2
I could verify that this patch still applies to the upstream kernel tree
and fixes the issue.
The fix was verified with upstream QEMU + the following patch:
Public bug reported:
Description:Ubuntu 14.04 LTS
Release:14.04
bash-completion:
Installed: 1:2.1-4
Candidate: 1:2.1-4
Version table:
*** 1:2.1-4 0
500 http://ports.ubuntu.com/ubuntu-ports/ trusty/main ppc64el Packages
100 /var/lib/dpkg/status
Bash completion
Adam,
All needed userland components have been patched, as described in Bug
1282426.
The kernel patch is now in Ben's next branch:
http://git.kernel.org/cgit/linux/kernel/git/benh/powerpc.git/commit/?h=nextid=599d2870425dcde3bf2a7d969d5977baa57feb8b
Regards.
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