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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1807432
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: cosmic
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https://bugs.launchpad.net/bugs/1807432
Title:
/proc/diskstats does not rollup queue depth from partitions
Status in linux package in Ubuntu:
Incomplete
Bug description:
Tested in Ubuntu 18.04LTS and Ubuntu 18.10, with the same result. The
queue size rollup works in Centos 7 though.
root@vagrant:~# uname -a
Linux vagrant 4.18.0-12-generic #13-Ubuntu SMP Wed Nov 14 15:17:05 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
root@vagrant:~# lsb_release -rd
Description: Ubuntu 18.10
Release: 18.10
root@vagrant:~# cat /proc/diskstats
7 0 loop0 5 0 16 0 0 0 0 0 0 0 0
7 1 loop1 0 0 0 0 0 0 0 0 0 0 0
7 2 loop2 0 0 0 0 0 0 0 0 0 0 0
7 3 loop3 0 0 0 0 0 0 0 0 0 0 0
7 4 loop4 0 0 0 0 0 0 0 0 0 0 0
7 5 loop5 0 0 0 0 0 0 0 0 0 0 0
7 6 loop6 0 0 0 0 0 0 0 0 0 0 0
7 7 loop7 0 0 0 0 0 0 0 0 0 0 0
259 0 nvme0n1 813340 0 10963704 274028 4075 44 1040576 46884 0 18012
908472
259 5 nvme0n1p1 203838 0 2749463 65696 986 0 252416 11696 13 14360
218028
259 6 nvme0n1p2 202672 0 2713358 67924 1015 0 259840 11696 20 14372
220388
259 7 nvme0n1p3 202961 0 2717301 70464 1034 0 264704 11652 19 14344
226248
259 8 nvme0n1p4 203216 0 2730974 69944 1028 0 263168 11840 16 14340
224992
8 0 sda 11622 783 612090 16416 6529 9730 607624 52912 0 7964 76940
8 1 sda1 11543 783 607954 16408 4731 9730 607624 52844 0 7380 76304
253 0 dm-0 12083 0 598666 25540 16198 0 613808 137252 0 7936 162808
253 1 dm-1 186 0 8696 104 0 0 0 0 0 80 104
We expect the queue depth of 'nvme0n1' to increase when the partitions
it has increase, but this never happens.
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