Our storge system MSA231sa had fail with controller A (was replaced with new one, but after that still got fail) as:
B18136 2015-04-12 16:25:11 84 W B Killed partner controller. (reason: PCIE link recovery failed [failover reason code: 29]) B18137 2015-04-12 16:25:11 194 I B Auto-write-through trigger event: partner processor down. B18138 2015-04-12 16:25:11 71 I B Failover initiated, failover set A B18139 2015-04-12 16:25:11 114 I B Disk link down. (Channel: 0) B18140 2015-04-12 16:25:11 114 I B Disk link down. (Channel: 1) B18141 2015-04-12 16:25:16 211 I B The SAS topology has changed (components were added or removed). (Channel: 1, number of elements: 5, expanders: 0, native levels: 0, partner levels: 0, device PHYs: 0) B18142 2015-04-12 16:25:16 211 I B The SAS topology has changed (components were added or removed). (Channel: 0, number of elements: 61, expanders: 1, native levels: 1, partner levels: 0, device PHYs: 9) B18143 2015-04-12 16:25:19 19 I B A rescan-bus operation was done. (number of disks that were found: 8, number of enclosures that were found: 1) (rescan reason code: 2) B18144 2015-04-12 16:25:19 77 I B Cache was initialized for controller A. Write-back data was found. B18145 2015-04-12 16:25:19 71 I B Failover completed, failover set A B18146 2015-04-12 16:25:31 310 I B Discovery and initialization of enclosure data was completed following a rescan. B18147 2015-04-12 16:25:31 19 I B A rescan-bus operation was done. (number of disks that were found: 8, number of enclosures that were found: 1) (rescan reason code: 24) B18148 2015-04-12 16:26:19 313 E B RAID controller A failed, reason PCIE link recovery failed. Product ID , S/N B18149 2015-04-12 16:26:19 314 E B There is a problem with a FRU. (FRU type: Controller module A, enclosure: 1, product ID: , SN: , version: , related event serial number: B18148, related event code: 313) B18150 2015-04-12 18:44:24 206 I B A scrub-vdisk job was started. (vdisk: VolGroup01, SN: 00c0ff10098e0000ebe8584c00000000) B18151 2015-04-12 22:39:16 207 I B Vdisk scrub completed, no errors found. (Vdisk: VolGroup01, SN: 00c0ff10098e0000ebe8584c00000000)
It is possible that you may have got DOA (Dead on Arrival) Part.
Try replacing the Controller 1 more time, if it still fails then you may need to isolate the issue to Midplane Chassis.
If this is not coverered under a warranty and if you can then you can follow:
Power off Hosts
Power Down MSA
Swap the Controllers ( A to Slot B and B to Slot A).
Power On the MSA.
If the Fault follows the controller then it is a Controller Failure (DOA) --- > Replace Controller Module.
If the Fault still remains on Controller A (which was originally Controller B) ---- Try replacing Midplane Chassis.
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