I can confirm that the following settings for crashkernel on powernv result in the following console log. crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
I will now test with @32M options. modoc login: [ 1374.418348] SysRq : Trigger a crash [ 1374.418424] Unable to handle kernel paging request for data at address 0x00000000 [ 1374.418430] Faulting instruction address: 0xc0000000005eeb94 [ 1374.418438] Oops: Kernel access of bad area, sig: 11 [#1] [ 1374.418442] SMP NR_CPUS=2048 NUMA PowerNV [ 1374.418448] Modules linked in: ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi dm_crypt rtc_generic uio_pdrv_genirq uio powernv_rng dm_round_robin scsi_dh_alua ses enclosure dm_multipath scsi_dh ipr [ 1374.418782] CPU: 57 PID: 3884 Comm: tee Not tainted 3.16.0-44-generic #59-Ubuntu [ 1374.418851] task: c000000fd0adcf60 ti: c000000fc9558000 task.ti: c000000fc9558000 [ 1374.418919] NIP: c0000000005eeb94 LR: c0000000005efc2c CTR: c0000000005eeb60 [ 1374.418986] REGS: c000000fc955b9d0 TRAP: 0300 Not tainted (3.16.0-44-generic) [ 1374.419053] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 28004024 XER: 20000000 [ 1374.419225] CFAR: c000000000009368 DAR: 0000000000000000 DSISR: 42000000 SOFTE: 1 GPR00: c0000000005efc2c c000000fc955bc50 c0000000013e5100 0000000000000063 GPR04: c000000013e48540 c000000013e58da8 00000000000004fd c0000000015c4e40 GPR08: c000000000e45100 0000000000000001 0000000000000000 00000000000004fd GPR12: c0000000005eeb60 c000000007ba0100 0000000000000000 0000000000000000 GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 GPR20: 0000000000000000 0000000000000000 0000000010009d08 0000000000000001 GPR24: 0000000010009d08 00003fffec7fe180 c000000001335828 0000000000000004 GPR28: 0000000000000063 c0000000013005a8 c000000001335be8 0000000000000000 [ 1374.420128] NIP [c0000000005eeb94] sysrq_handle_crash+0x34/0x50 [ 1374.420186] LR [c0000000005efc2c] __handle_sysrq+0xec/0x280 [ 1374.420231] Call Trace: [ 1374.420256] [c000000fc955bc50] [c000000fc955bcb0] 0xc000000fc955bcb0 (unreliable) [ 1374.420336] [c000000fc955bc70] [c0000000005efc2c] __handle_sysrq+0xec/0x280 [ 1374.420404] [c000000fc955bd10] [c0000000005f0428] write_sysrq_trigger+0x78/0xa0 [ 1374.420485] [c000000fc955bd40] [c00000000033af30] proc_reg_write+0xb0/0x110 [ 1374.420555] [c000000fc955bd90] [c0000000002aef7c] vfs_write+0xdc/0x260 [ 1374.420624] [c000000fc955bde0] [c0000000002afcec] SyS_write+0x6c/0x110 [ 1374.420694] [c000000fc955be30] [c00000000000a1d8] system_call+0x38/0xd0 [ 1374.420761] Instruction dump: [ 1374.420795] 384265a0 7c0802a6 f8010010 f821ffe1 60000000 60000000 3d22001b 39492c6c [ 1374.420909] 39200001 912a0000 7c0004ac 39400000 <992a0000> 38210020 e8010010 7c0803a6 [ 1374.421027] ---[ end trace 039edbe0a3f4d32b ]--- [ 1374.421073] [ 1376.421463] Kernel panic - not syncing: Fatal exception [ 1376.421618] ---[ end Kernel panic - not syncing: Fatal exception -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1567539 Title: Failure to dump with trusty+3.16 on ppc64el To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/makedumpfile/+bug/1567539/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
