Issue #2683 has been updated by ftigeot.

Some newer Dell h710 firmwares containing important fixes are available to 
download.
No direct mention was made of data corruption in the release notes but the 
controllers could hang in some circumstances with older firmwares.

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Bug #2683: HAMMER data corruption with rebranded LSI RAID adapters
http://bugs.dragonflybsd.org/issues/2683#change-12087

* 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@pci0:3:0:0:        class=0x010400 card=0x1f341028 chip=0x005b1000 rev=0x05 
hdr=0x00




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