I have not been able to change the tag queue length of my
aic7xxx controller for target 0.
I've added several versions of this line to /etc/modules.conf


[root@proxy11 root]# cat /etc/modules.conf
alias parport_lowlevel parport_pc
alias scsi_hostadapter aic7xxx
add options aic7xxx "aic7xxx=tag_info:{{8,8,8,8}}"
alias sound-slot-0 es1371
post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || :
pre-remove sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || :
alias usb-controller usb-uhci
alias eth0 dmfe
[root@proxy11 root]# set -o vi
[root@proxy11 root]# mkinitrd -f /boot/initrd-2.4.18-3-jgm.img 2.4.18-3
[root@proxy11 root]# cat /etc/lilo.conf.ana*
prompt
timeout=50
default=linux
boot=/dev/sda
map=/boot/map
install=/boot/boot.b
message=/boot/message
linear

image=/boot/vmlinuz-2.4.18-3
label=linux
initrd=/boot/initrd-2.4.18-3.img
read-only
root=/dev/sda5

image=/boot/vmlinuz-2.4.18-3
label=linux-jgm
initrd=/boot/initrd-2.4.18-3-jgm.img
read-only
root=/dev/sda5
[root@proxy11 root]#

[root@proxy11 root]# head -15 /proc/scsi/aic7*/0
Adaptec AIC7xxx driver version: 6.2.5
aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs
Channel A Target 0 Negotiation Settings
User: 40.000MB/s transfers (20.000MHz, offset 255, 16bit)
Goal: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
Curr: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
Channel A Target 0 Lun 0 Settings
Commands Queued 7227
Commands Active 0
Command Openings 127
Max Tagged Openings 253
Device Queue Frozen Count 0
Channel A Target 1 Negotiation Settings
User: 40.000MB/s transfers (20.000MHz, offset 255, 16bit)
Channel A Target 2 Negotiation Settings
[root@proxy11 root]#


I have been able to create initrd-xx.img files that hang and
I've seen the "Command Openings" move between 127 and 253
but never have I achieved a queue depth of 8.

Take look at the file ``/usr/src/linux-2.4/drivers/scsi/README.aic7xxx''. There seems to be something about commas in the command string that affects the way module options need to be specified (to make insmod happy). If I read the caveat correctly, it looks like you might have to enter the options strings as:

"aic7xxx=tag_info:{{8.8.8.8}}"

Looks weird to me but might be worth a try. I'd have a boot floppy or rescue CD available before trying this.

Good luck,

Rick

add options aic7xxx "aic7xxx=tag_info:{{255.255.255.255}}"

Above did not boot.

add options aic7xxx "aic7xxx=tag_info:{{255}}"

Above did not boot.

add options aic7xxx "aic7xxx=tag_info:{{8}}"

The above boots but does not seem to change
the tag queue length, and the problem still
occurs....


[root@proxy11 root]# grep aic7xxx /etc/modules.conf
alias scsi_hostadapter aic7xxx
add options aic7xxx "aic7xxx=tag_info:{{8}}"
[root@proxy11 root]# head -15 /proc/scsi/aic*/0
Adaptec AIC7xxx driver version: 6.2.5
aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs
Channel A Target 0 Negotiation Settings
User: 40.000MB/s transfers (20.000MHz, offset 255, 16bit)
Goal: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
Curr: 40.000MB/s transfers (20.000MHz, offset 8, 16bit)
Channel A Target 0 Lun 0 Settings
Commands Queued 6245
Commands Active 0
Command Openings 253
Max Tagged Openings 253
Device Queue Frozen Count 0
Channel A Target 1 Negotiation Settings
User: 40.000MB/s transfers (20.000MHz, offset 255, 16bit)
Channel A Target 2 Negotiation Settings
[root@proxy11 root]# up2date -u

Retrieving list of all available packages...
########################################

Removing installed packages from list of updates...
########################################

Removing packages marked to skip from list...
########################################

Getting headers for available packages...
There was a fatal error communicating with the server. The message was:
Connection aborted by the user
[root@proxy11 root]# tail /var/log/messages
Feb 24 10:44:32 proxy11 -- root[1071]: ROOT LOGIN ON tty1
Feb 24 10:45:08 proxy11 sshd(pam_unix)[1124]: session opened for user root by (uid=0)
Feb 24 10:46:31 proxy11 kernel: scsi0: PCI error Interrupt at seqaddr = 0x7
Feb 24 10:46:31 proxy11 kernel: scsi0: Data Parity Error Detected during address or write data phase
Feb 24 10:46:32 proxy11 kernel: scsi0: PCI error Interrupt at seqaddr = 0x8
Feb 24 10:46:32 proxy11 kernel: scsi0: Data Parity Error Detected during address or write data phase
Feb 24 10:46:32 proxy11 kernel: scsi0: PCI error Interrupt at seqaddr = 0x9
Feb 24 10:46:32 proxy11 kernel: scsi0: Data Parity Error Detected during address or write data phase
Feb 24 10:46:32 proxy11 kernel: scsi0: PCI error Interrupt at seqaddr = 0x7
Feb 24 10:46:32 proxy11 kernel: scsi0: Data Parity Error Detected during address or write data phase
[root@proxy11 root]#