The intended use for VMD is as a PCIe storage domain, so we expect only
to see root ports, switches and NVMe SSDs in the VMD domain.
Linux VMD is implemented just as a PCIe host bridge driver in order to
reuse existing device drivers, though, so you could theoretically
connect any pci device in
A couple issues here. The nvme driver was ported from 4.5, but the block
layer was based on 4.4, so there was a mismatch in how to handle
timeouts. That was this launchpad:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1597908
But also, there is a bug handling legacy IRQ that only
Kamil,
For your issue, this is potentially a bug specific to the 4.5 driver. We
used to poll once a second, which would hide legacy irq issues during
initialization, but 4.5 removed it. A patch[*] to 4.6 removed all use of
legacy interrupts, and should have been applied to 4.5 stable (they were
Hi Kamil,
It looks like the kernel issue is resolved. Your drive just appears to
be in a bad state and the driver reacts accordingly.
I think this launchpad's issue is resolved and should request the fix go
forward.
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Thanks for the quick build! I forwarded this onto the original reporter
and will send the results when I hear them. We'll get it tested though
might be next week for the results due to holiday weekend.
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Packages, which is
This system crashes making apport-collect not possible after the fact,
though I confirm it is a bug. As the upstream nvme driver maintainer, I
can recommend either which driver commits need to be reverted, or which
kernel commit needs to be cherry-picked (preferring the latter :)).
Here is a
** Tags removed: verification-needed-trusty
** Tags added: verification-done-trusty
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https://bugs.launchpad.net/bugs/1382221
Title:
please add linux nvme block driver
Public bug reported:
This is a bug in a linux kernel driver, I'm basing off ubuntu trusty
tree:
http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-trusty.git;a=summary
We need an unpstream commit from the NVMe driver to prevent a kernel
crash. It's this one here:
We already confirmed the bug and fix upstream during 3.14 merge. I
should have marked the commit for stable. I (embarrassingly) wrote the
original code that committed this bug upstream, but I also wrote and
committed the fix! :)
** Patch added: Fixes the bug, attaching patch committed upstream
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