Allow I/O schedulers to be loaded with modprobe in linux-azure
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-azure (Ubuntu) |
Fix Released
|
Undecided
|
Marcelo Cerri | ||
Xenial |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Marcelo Cerri | ||
Cosmic |
Fix Released
|
Undecided
|
Marcelo Cerri | ||
Disco |
Won't Fix
|
Undecided
|
Unassigned |
Bug Description
There was a previous request in bug https:/
However with new upstream releases, new schedulers where added and linux-azure inherited the default config value for them from the master kernel. That's why there are some IO schedulers built as modules in the extra package (mq-deadline and kyber-iosched). In order to use those two modules, one needs to install the -extra package and modprobe the modules first:
# tail /sys/block/
==> /sys/block/
[none]
==> /sys/block/
[none]
# apt install linux-modules-
# modprobe kyber-iosched
# tail /sys/block/
==> /sys/block/
[none] kyber
==> /sys/block/
[none] kyber
# modprobe mq-deadline
# tail /sys/block/
==> /sys/block/
[none] kyber mq-deadline
==> /sys/block/
[none] kyber mq-deadline
The schedulers cfq and deadline have been completely disabled in LP bug #1671203 so they cannot be added with modprobe.
This is a request to move back the cfq and deadline schedulers along with the mq-deadline and kyber-iosched schedulers to the main linux-azure package (in other words, not in the -extra package) and allow the users to be able to modprobe the schedulers when needed.
Changed in linux-azure (Ubuntu): | |
status: | New → Confirmed |
Changed in linux-azure (Ubuntu): | |
status: | Confirmed → Invalid |
Changed in linux-azure (Ubuntu Bionic): | |
status: | New → Fix Committed |
Changed in linux-azure (Ubuntu Cosmic): | |
status: | New → Fix Committed |
Changed in linux-azure (Ubuntu): | |
assignee: | nobody → Marcelo Cerri (mhcerri) |
Changed in linux-azure (Ubuntu Bionic): | |
assignee: | nobody → Marcelo Cerri (mhcerri) |
Changed in linux-azure (Ubuntu Cosmic): | |
assignee: | nobody → Marcelo Cerri (mhcerri) |
Changed in linux-azure (Ubuntu Xenial): | |
status: | New → Fix Committed |
Changed in linux-azure (Ubuntu Disco): | |
status: | New → Won't Fix |
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- bionic' to 'verification- done-bionic' . If the problem still exists, change the tag 'verification- needed- bionic' to 'verification- failed- bionic' .
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.
See https:/ /wiki.ubuntu. com/Testing/ EnableProposed for documentation how to enable and use -proposed. Thank you!