** Changed in: makedumpfile (Ubuntu)
Assignee: Heitor Alves de Siqueira (halves) => Guilherme G. Piccoli
(gpiccoli)
** Changed in: makedumpfile (Ubuntu Xenial)
Assignee: Heitor Alves de Siqueira (halves) => Guilherme G. Piccoli
(gpiccoli)
** Changed in: makedumpfile (Ubuntu Bionic)
Assignee: Heitor Alves de Siqueira (halves) => Guilherme G. Piccoli
(gpiccoli)
** Changed in: makedumpfile (Ubuntu Disco)
Assignee: Heitor Alves de Siqueira (halves) => Guilherme G. Piccoli
(gpiccoli)
** Changed in: makedumpfile (Ubuntu Trusty)
Status: Confirmed => Won't Fix
** Changed in: makedumpfile (Ubuntu Cosmic)
Assignee: Heitor Alves de Siqueira (halves) => Guilherme G. Piccoli
(gpiccoli)
** Changed in: makedumpfile (Ubuntu Trusty)
Assignee: Heitor Alves de Siqueira (halves) => Guilherme G. Piccoli
(gpiccoli)
** Also affects: makedumpfile (Ubuntu Eoan)
Importance: High
Assignee: Guilherme G. Piccoli (gpiccoli)
Status: Confirmed
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to makedumpfile in Ubuntu.
https://bugs.launchpad.net/bugs/1800566
Title:
Make the reset_devices parameter default for kdump kernels
Status in makedumpfile package in Ubuntu:
Confirmed
Status in makedumpfile source package in Trusty:
Won't Fix
Status in makedumpfile source package in Xenial:
Confirmed
Status in makedumpfile source package in Bionic:
Confirmed
Status in makedumpfile source package in Cosmic:
Confirmed
Status in makedumpfile source package in Disco:
Confirmed
Status in makedumpfile source package in Eoan:
Confirmed
Bug description:
[Impact]
Crash kernels do not advise some subsystems to perform a reset by default.
[Description]
Kernel has the "reset_devices" parameter that drivers can opt-in, and perform
special activity in case this parameter is parsed from command-line. For
example, in kdump kernels it hints the drivers that they (maybe) are booting
from a non-healthy condition and needs to issue some reset to the adapter.
Users currently (kernel v4.19) are: hpsa, ipr, megaraid_sas, mpt3sas, smartpqi,
xenbus.
This should be enabled by default in the kdump config file to be added
in the kdump kernel command-line for all versions.
[Test Case]
1) Deploy a Disco VM e.g. with uvt-kvm
2) Install the kdump-tools package
3) Run `kdump-config test`and check for the 'reset_devices' parameter:
$ kdump-config test
...
kexec command to be used:
/sbin/kexec -p --command-line="BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic
root=LABEL=cloudimg-rootfs ro console=tty1 console=ttyS0 nr_cpus=1
systemd.unit=kdump-tools.service irqpoll nousb ata_piix.prefer_ms_hyperv=0"
/var/lib/kdump/vmlinuz
[Regression Potential]
The regression potential is very low, since it doesn't need any changes in
makedumpfile code and we're only adding a parameter on the crashkernel cmdline.
The fix will be tested with autopkgtests and normal kdump use-case scenarios.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/makedumpfile/+bug/1800566/+subscriptions
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