Re: Remove memory DLPAR operation fails for Debian 6.0.3 on IBM Power6 and Power7 Systems
Hello,
just a follow up on how the issue of DLPAR memory removal not
working was resolved: Disabling the CONFIG_SPARSEMEM_VMEMMAP
kernel config option. Apparently this option is not supported
right now in conjunction with memory DLPAR. Credits for solving
this go to the folks over at IBMs developerWorks, see:
https://www.ibm.com/developerworks/mydeveloperworks/groups/service/forum/topicThread?topicUuid=9108f310-0899-4394-b3f1-d82e3506d630
The next step was giving LPM a try. This looked good from the
HMC status messages at first, but the whole OS hang at/after
the suspend/unsuspend operation. The LPM from the HMC finished
with an ok status, but the OS still hang. After several minutes
of waiting it eventually continued to run. The kernel messages
shown below showed up around the time the OS continued to run.
Any thoughts about that one?
Thanks & best regards,
Frank
######################################################################################
[ ... memory remove DLPAR here ... ]
[ 1718.704600] Trying to free nonexistent resource <000000008f000000-000000008fffffff>
[ 1966.342008] ------------[ cut here ]------------
[ 1966.342043] WARNING: at /usr/src/linux-2.6-2.6.39/debian/build/source_powerpc_none/kernel/timer.c:1012
[ 1966.342049] Modules linked in: loop serio ext3 jbd mbcache dm_round_robin dm_multipath scsi_dh dm_mod sd_mod crc_t10dif ibmvscsic scsi_transport_srp scsi_tgt scsi_mod ibmveth [last unloaded: scsi_wait_scan]
[ 1966.342102] NIP: c0000000000a79a0 LR: c00000000003dddc CTR: 000000000178f500
[ 1966.342108] REGS: c00000009ffc77e0 TRAP: 0700 Not tainted (2.6.39-bpo.2-powerpc)
[ 1966.342112] MSR: 8000000000021032 <ME,CE,IR,DR> CR: 48000084 XER: 00000001
[ 1966.342135] TASK = c00000009e994ab0[0] 'kworker/0:1' THREAD: c00000009e99c000 CPU: 5
[ 1966.342140] GPR00: 0000000000000001 c00000009ffc7a60 c000000000828fb8 c000000000768b08
[ 1966.342149] GPR04: 0000000000000001 0000000000000000 0000000000000012 0000001200000000
[ 1966.342157] GPR08: 0000000000000012 c00000009ffc4000 0000000000000006 0000000000000001
[ 1966.342166] GPR12: 0000000000000000 c00000000eea6c80 c00000009e99ff90 000000000ef04280
[ 1966.342175] GPR16: 0000000000000000 0000000000000000 c000000000765f88 c000000000be4eb0
[ 1966.342183] GPR20: c0000000007b2960 0000000000000020 0000000000000000 c000000000838300
[ 1966.342191] GPR24: 0000000000000000 0000000000000000 c00000009b4e7c94 c00000009b4e7c9c
[ 1966.342200] GPR28: 0000000000000040 0000000000000001 c000000000798840 c000000000768b08
[ 1966.342251] NIP [c0000000000a79a0] .del_timer_sync+0x28/0x5c
[ 1966.342270] LR [c00000000003dddc] .stop_topology_update+0x20/0x34
[ 1966.342274] Call Trace:
[ 1966.342287] [c00000009ffc7a60] [000000001c8e9d39] 0x1c8e9d39 (unreliable)
[ 1966.342294] [c00000009ffc7ae0] [c00000000003dddc] .stop_topology_update+0x20/0x34
[ 1966.342310] [c00000009ffc7b50] [c000000000023678] .__rtas_suspend_last_cpu+0x54/0x1cc
[ 1966.342326] [c00000009ffc7c00] [c0000000000d475c] .generic_smp_call_function_interrupt+0x11c/0x264
[ 1966.342335] [c00000009ffc7cf0] [c00000000002e7f8] .smp_message_recv+0x48/0xf4
[ 1966.342345] [c00000009ffc7d70] [c00000000005c934] .xics_ipi_dispatch+0x74/0x130
[ 1966.342357] [c00000009ffc7e10] [c0000000001030d0] .handle_irq_event_percpu+0xec/0x2f0
[ 1966.342363] [c00000009ffc7f00] [c000000000106248] .handle_percpu_irq+0x84/0xd0
[ 1966.342374] [c00000009ffc7f90] [c00000000001e7d0] .call_handle_irq+0x1c/0x2c
[ 1966.342381] [c00000009e99fab0] [c00000000000f7b4] .do_IRQ+0x184/0x26c
[ 1966.342387] [c00000009e99fb60] [c000000000004d30] hardware_interrupt_entry+0x18/0x1c
[ 1966.342395] --- Exception: 501 at .arch_local_irq_restore+0x70/0x80
[ 1966.342397] LR = .cpu_idle+0x124/0x1d8
[ 1966.342423] [c00000009e99fee0] [c00000000054afc4] .start_secondary+0x354/0x360
[ 1966.342430] [c00000009e99ff90] [c0000000000092e8] .start_secondary_prolog+0x10/0x14
[ 1966.342435] Instruction dump:
[ 1966.342439] 7c0803a6 4e800020 7c0802a6 fbe1fff8 7c7f1b78 f8010010 f821ff81 78290464
[ 1966.342449] 80090014 5400019e 7c0000d0 78000fe0 <0b000000> 7fe3fb78 4bfffea1 2f830000
[ 1966.342461] ---[ end trace dcb8a21996018b78 ]---
[ 1966.342466] calling ibm,suspend-me on cpu 5
[ 1986.614322] EPOW <0x6240040000000b8 0x0 0x0>
[ 1986.624019] RTAS: event: 1, Type: EPOW, Severity: 1
[ 1986.627729] ibmvscsi 30000002: Re-enabling adapter!
[ 1986.644364] ibmvscsi 30000003: Re-enabling adapter!
[ 1989.073563] ibmvscsi 30000003: partner initialization complete
[ 1989.073571] ibmvscsi 30000002: partner initialization complete
[ 1989.073651] ibmvscsi 30000003: host srp version: 16.a, host partition vios2-p550-300 (2), OS 3, max io 262144
[ 1989.075131] ibmvscsi 30000003: Client reserve enabled
[ 1989.075145] ibmvscsi 30000003: sent SRP login
[ 1989.075228] ibmvscsi 30000003: SRP_LOGIN succeeded
[ 1989.075504] ibmvscsi 30000002: host srp version: 16.a, host partition vios1-p550-300 (1), OS 3, max io 262144
[ 1989.075616] ibmvscsi 30000002: Client reserve enabled
[ 1989.076232] ibmvscsi 30000002: sent SRP login
[ 1989.076347] ibmvscsi 30000002: SRP_LOGIN succeeded
[ 1990.818052] property parse failed in parse_next_property at line 225
[ 1992.320326] property parse failed in parse_next_property at line 225
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