On 02/10/2017 08:49 AM, Paolo Valente wrote: >> $ grep '^C.*_MQ_' .config >> CONFIG_BLK_MQ_PCI=y >> CONFIG_MQ_IOSCHED_BFQ=y >> CONFIG_MQ_IOSCHED_DEADLINE=y >> CONFIG_MQ_IOSCHED_NONE=y >> CONFIG_DEFAULT_MQ_BFQ_MQ=y >> CONFIG_DEFAULT_MQ_IOSCHED="bfq-mq" >> CONFIG_SCSI_MQ_DEFAULT=y >> CONFIG_DM_MQ_DEFAULT=y >> > > Could you reconfigure with none or mq-deadline as default, check > whether the system boots, and, it it does, switch manually to bfq-mq, > check what happens, and, in the likely case of a failure, try to get > the oops? Hello Paolo, I just finished performing that test with the following kernel config: $ grep '^C.*_MQ_' .config CONFIG_BLK_MQ_PCI=y CONFIG_MQ_IOSCHED_BFQ=y CONFIG_MQ_IOSCHED_DEADLINE=y CONFIG_MQ_IOSCHED_NONE=y CONFIG_DEFAULT_MQ_DEADLINE=y CONFIG_DEFAULT_MQ_IOSCHED="mq-deadline" CONFIG_SCSI_MQ_DEFAULT=y CONFIG_DM_MQ_DEFAULT=y After the system came up I logged in, switched to the bfq-mq scheduler and ran several I/O tests against the boot disk. Sorry but nothing interesting appeared in the kernel log. Bart.
