[DragonFlyBSD - Bug #2683] HAMMER data corruption with rebranded LSI RAID adapters

[bugtracker-admin at leaf.dragonflybsd.org]

Issue #2683 has been updated by ftigeot.


A test server running with the mrsas(4) driver is still running perfectly after having processed terabytes of database imports and nfs traffic.
It is likely the corruption seen with Thunderbolt LSI RAID adapters is specific to the mfi(4) driver at this point.

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Bug #2683: HAMMER data corruption with rebranded LSI RAID adapters
http://bugs.dragonflybsd.org/issues/2683#change-12112

* Author: ftigeot
* Status: New
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
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Two different machines running DragonFly 3.6.x had the kernel report HAMMER CRC32 data corruption and then panic.

After a reboot, the kernel couldn't repair and mount the HAMMER volumes where these CRC32 errors occurred due to massive amounts of data corruption.

The systems had these elements in common:
- DragonFly 3.6.x
- Dell rack servers
- HAMMER filesystem on a hardware RAID volume managed by the mfi(4) LSI MegaRAID SAS driver

The two different machines were apparently using the same kind of rebranded LSI RAID adapter.

PCI id from one of the cards:
mfi0 at pci0:3:0:0:        class=0x010400 card=0x1f341028 chip=0x005b1000 rev=0x05 hdr=0x00




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