This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
trusty' to 'verification-done-trusty'.
If verification is not done by 5 working days from
** Tags removed: verification-needed-trusty
** Tags added: verification-done-trusty
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Title:
Since Trusty /proc/diskstats shows
** Branch linked: lp:ubuntu/precise-proposed/linux-lts-trusty
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Title:
Since Trusty /proc/diskstats shows weird values
Status in
** Branch linked: lp:ubuntu/trusty-proposed/linux-keystone
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Title:
Since Trusty /proc/diskstats shows weird values
Status in
Can you please test this build with that patch backported:
http://people.canonical.com/~arges/lp1297522/
Thanks
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Title:
Since
Just tried it - yes, this works! Now diskstats look normal on virtual
machines.
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Title:
Since Trusty /proc/diskstats shows weird
** Description changed:
+ SRU Justification:
+
+ Impact: Tools that rely on diskstats may report incorrect data in
+ certain conditions. In particular diskstats in a VM may report incorrect
+ statistics.
+
+ Fix: 0fec08b4ecfc36fd8a64432343b2964fb86d2675 ( in 3.14-rc1 )
+
+ Testcase:
+ -
SRU submitted for this.
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Title:
Since Trusty /proc/diskstats shows weird values
Status in “linux” package in Ubuntu:
Fix
** Changed in: linux (Ubuntu Trusty)
Status: In Progress = Fix Committed
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Title:
Since Trusty /proc/diskstats shows weird
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Trusty)
Assignee: (unassigned) = Chris J Arges (arges)
** Changed in: linux (Ubuntu Trusty)
Status: New = In Progress
** Changed in: linux (Ubuntu Trusty)
Importance:
Ok I can reproduce this issue, so far looks like something between
v3.13 and v3.14-rc1. I'll start bisecting.
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Title:
Since Trusty
Ok I found a patch that resolves the issue:
0fec08b4ecfc36fd8a64432343b2964fb86d2675
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Title:
Since Trusty /proc/diskstats shows
I can confirm this bug still exist in current Trusty-kernel
(3.13.0-34-generic). On host system diskstats are ok, but on virtual
machine (KVM) the diskstats are showing crazy values.
** Package changed: linux (Ubuntu) = linux-meta (Ubuntu)
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** Package changed: linux-meta (Ubuntu) = linux (Ubuntu)
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Title:
Since Trusty /proc/diskstats shows weird values
Status in “linux”
Can you explain how you setup your guest vm? If you are using libvirt,
could you do a 'virsh dumpxml domain' of the affected VM?
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This is my affected VM.
** Attachment added: XML of affected VM
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1297522/+attachment/4187790/+files/fmec.xml
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No issues with 3.14 kernel
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
** Tags added: kernel-fixed-upstream
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Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.14 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
** Attachment added: apport.linux.WwkgUu.apport
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1297522/+attachment/4043636/+files/apport.linux.WwkgUu.apport
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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