mfi (Dell H700) + hot swapping doesn't appear to work with RC1

[Andrew Boyer]

On Dec 15, 2011, at 1:10 PM, Hugo Silva wrote:

> On 12/15/11 16:40, Andrew Boyer wrote:
>> I'm not sure it would even be possible to come up with a worse interface.  It boggles the mind.
>> 
>> I recommend you always run with this configuration:
>> 
>> # MegaCli -AdpSetProp AutoEnhancedImportEnbl -aALL
>> # MegaCli -AdpSetProp MaintainPdFailHistoryEnbl -0 -aALL
>> 
>> AutoEnhancedImportEnbl will bring the foreign disk back in on a reboot.  LSI recommends turning off MaintainPdFailHistory when using single-disk RAID0 configurations.
>> 
> 
> Any gotchas with this enabled? I'm thinking putting in a disk from
> another card, which is part of a raid, in this server, for instance.
> 

My understanding is that it only imports a foreign configuration if it's complete - but I've never tested it.

>> To bring in a foreign disk without rebooting:
>> 
>> # MegaCli -CfgForeign -Scan -aALL
>> # MegaCli -CfgForeign -Import [x] -aN (where x is the config number listed in the scan, and N is the adapter number)
>> 
>> Adding these capabilities to mfiutil is on my list of things to do, but it's not ready yet.
>> 
>> Has anyone managed to get the real JBOD mode working on this controller?  It advertises support in the firmware but doesn't seem to do anything.  The documentation only lists JBOD mode as a feature of the lower-end controllers.
>> 
>> Hope this helps.
>> 
>> -Andrew
> 
> It does help - thanks! For the same disk being removed and then
> reinserted, the provided commands brought the disk/volume back to
> mfiutil show drives/volumes output, and after a zpool clear, ZFS has no
> complains.
> 
> 
> For recovery from a software-induced fail (mfiutil fail eX:sX), I
> couldn't perform a recovery using just mfiutil. MegaCli -PDOnline
> -PhysDrv[eX:sX] -aN did it, in that case.
> 
> For the still-untested case of an altogether new disk being inserted, I
> guess mfiutil create jbod N would do the trick.
> 
> 
> BTW, the mfiutil is coredumping when provided with inexistant disks
> (just noticed)


Can you provide the exact command that produces a core?

-Andrew

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Andrew Boyer	aboyer at averesystems.com