aacraid on Poweredge 2650 ()

Yo!

Running a Dell Poweredge 2650, I run into a stability problem triggered by lots of disk activity (sometimes just tarring the whole filesystem for backup or creating a new chroot would suffice, sometimes hundreds of GB of filetransfers were necessary)

This was with Debian stable (2.6.8 kernel), and with what appeared to be a
half-buggy disk and a (ecc-correctable) faulty memory. Now, with replaced
hardware and with the 2.6.15 kernel (aac 1.1-4), things seem to be better. (replacing the hardware alone didn't help, so it seemed to be a driver problem.)

A quick test, moving a few 100G and a few 1000 files, couldn't reproduce the issue, but still: are there known stability problems with that driver version? Is there a changelog of the aacraid driver somewhere?

thanks in advance
-- vbi

relevant kernel messages afaict:
===
Adaptec aacraid driver (1.1-4 Mar 7 2006 02:24:50)
AAC0: kernel 2.7-1[3170]
AAC0: monitor 2.7-1[3170]
AAC0: bios 2.7-1[3170]
AAC0: serial d15810d3
scsi0 : percraid
Vendor: DELL Model: 3 discs and HS Rev: V1.0
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sda: 142183296 512-byte hdwr sectors (72798 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 00
sda: got wrong page
sda: assuming drive cache: write through
SCSI device sda: 142183296 512-byte hdwr sectors (72798 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 00
sda: got wrong page
sda: assuming drive cache: write through
sda: sda1 sda2 sda3 < sda5 sda6 >
sd 0:0:0:0: Attached scsi removable disk sda
===

lspci output
===
0000:04:08.1 RAID bus controller: Dell PowerEdge Expandable RAID Controller 3/Di (rev 01)
Subsystem: Dell: Unknown device 0121
Flags: bus master, 66MHz, slow devsel, latency 32, IRQ 185 Memory at f0000000 (32-bit, prefetchable) [size=128M] Expansion ROM at fcb00000 [disabled] [size=64K]
Capabilities: [80] Power Management version 2

0000:05:06.0 SCSI storage controller: Adaptec RAID subsystem HBA (rev 01)

        Subsystem: Dell PowerEdge 2400,2500,2550,4400
        Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 7
        BIST result: 00
        I/O ports at cc00 [size=256]
        Memory at fccff000 (64-bit, non-prefetchable) [size=4K]
        Expansion ROM at fcd00000 [disabled] [size=128K]
        Capabilities: [dc] Power Management version 2

0000:05:06.1 SCSI storage controller: Adaptec RAID subsystem HBA (rev 01)

        Subsystem: Dell PowerEdge 2400,2500,2550,4400
        Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 11
        BIST result: 00
        I/O ports at c800 [size=256]
        Memory at fccfe000 (64-bit, non-prefetchable) [size=4K]
        Expansion ROM at f8100000 [disabled] [size=128K]
        Capabilities: [dc] Power Management version 2

===

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