DELL SAS5/E Controller bug

[Stephane LAPIE]

Hello list,

Basically I'm experiencing the same problem as described here :
https://forums.freebsd.org/showthread.php?t=9407 (linking for reference)

Drives disconnections are not recognized instantly, and instead I get
the following dmesg entries :
mpt0: mpt_cam_event: 0x16
mpt0: mpt_cam_event: 0x16

(Sometimes I also get "mpt0: mpt_cam_event: 0x12" events)

This is really crippling as this litterally paralyzes the ZFS pool until
the controller finally comes to its senses (...or until a disk gets
replugged in, which provokes a flush of all the buffered failed SCSI
requests).

Hardware is recognized as :
mpt0 at pci0:6:8:0:	class=0x010000 card=0x1f041028 chip=0x00541000 rev=0x01
hdr=0x00
    vendor = 'LSI Logic (Was: Symbios Logic, NCR)'
    device = 'SAS 3000 series, 8-port with 1068 -StorPort'
    class = mass storage
    subclass = SCSI

Did anyone else experience this, or find a proper work-around ?

Thanks in advance for your time,
-- 
Stephane LAPIE, EPITA SRS, Promo 2005
"Even when they have digital readouts, I can't understand them."
--MegaTokyo

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