Re: hangs with 2.6.15-rc5

Andrew Burgess [off-list ref] wrote:

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I'm seeing hard system lockups with 2.6.15-rc5 when trying to use a
RAID-6 array as a PV for LVM2.

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I've got four SATA disks hanging off a Marvell 6081 controller.  The disks
work great when I access them "raw" (without going through md or dm).
Nice & fast & reliable.  The disks work great when used "raw" as PVs
for an LVM2 setup.  And they work great when used in a RAID-6 array.

I've been unable to use either 2.6.14 or 2.6.15 due to bogus scsi errors, not
exactly what you see but you might try 2.6.13.4 which works flawlessly for me,
LVM using raid6 PV's, some of the raid6 devices use some raid1 components.

Are you using a Marvell controller?  Do you have MSI enabled by any
chance?  I had to disable MSI to get it to communicate reliably.

Sorry I should have said. I have 4 3ware controllers, 2 sata, 2 pata...