** Tags added: seg -- 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: Confirmed 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 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 -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
