dell 2950 + mpt + stable/8 boot hangs

[Philip M. Gollucci]

Hi All,

[please keep the infra-private list in the replies]


We've recently attached a external JBOD, Storform D53J, to a dell pe 
2950 via PCI-e cards (using the mpt driver).

This works fine on stable/7 at r197719 [1] despite being before some mfc's 
of mptutil work from scottl.

When booting stable/8 at 204185 the boot hangs [2]

Whats more, is if we disconnect the array physically, we're able to boot 
[3] the stable/8 kernel and even use the array from a chroot'ed install 
of the stable/8 userland [sudo camcontrol rescan all, and some zpool stuff]

We've already seen this suggestion on google
/boot/loader.conf:
hw.pci.mcfg=0

which didn't help.

Additionally, the following pr might be relevant but we haven't tried it 
yet.

http://people.freebsd.org/~linimon/studies/prs/prs_for_tag_regression.html

http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/142263
   disabling acpi


Thoughts ?





[1] - http://people.apache.org/~pgollucci/ERIS/dmesg.boot.7
[2] - http://people.apache.org/~pgollucci/ERIS/eris.bmp
[3] - http://people.apache.org/~pgollucci/ERIS/dmesg.boot.8

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Philip M. Gollucci (pgollucci at p6m7g8.com) c: 703.336.9354
VP Apache Infrastructure; Member, Apache Software Foundation
Committer,                        FreeBSD Foundation
Consultant,                       P6M7G8 Inc.
Sr. System Admin,                 Ridecharge Inc.

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