Kernel 2.4.18 / aic7xxx 6.2.4 - 'Free block count corrupted'

[Tony Clark]

Hi there,

I'm trying to get a large raid working on 2.4.18 without much luck.  I wrote
a little test to see if it worked properly that goes like this:

#!/bin/bash
i=1000
for((i=1000;i != 0;i--)); do
  time -p dd if=/dev/zero of=./bigfile.$i bs=2k count=1024
  echo $i
done

Which when run goes OK for about 100 files, then:

dd: opening `./bigfile.795': No space left on device
real 0.00
user 0.00
sys 0.00
795
dd: opening `./bigfile.794': No space left on device
real 0.00
user 0.00
sys 0.00
794

In my syslog, I see:

Mar 26 07:16:20 r5 kernel: (scsi0:A:1:0): Locking max tag count at 64

and have previously seen:

Mar 25 21:31:51 r5 kernel: EXT2-fs error (device sd(8,16)):
ext2_free_blocks: bit already cleared for block 3768318
Mar 25 21:31:51 r5 kernel: EXT2-fs error (device sd(8,16)):
ext2_free_blocks: bit already cleared for block 3768319
Mar 25 22:49:22 r5 kernel: EXT2-fs error (device sd(8,16)): ext2_new_block:
Free blocks count corrupted for block group 6

...repeated hunderds of times.  All of these things happen on the system
disk and raid unit in the same way.

>From my /proc/scsi/aic7xxx/0:
[root at r5 tmp]# cat /proc/scsi/aic7xxx/0
Adaptec AIC7xxx driver version: 6.2.4
aic7896/97: Ultra2 Wide Channel A, SCSI Id=7, 32/253 SCBs
Channel A Target 0 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
Channel A Target 1 Negotiation Settings
        User: 80.000MB/s transfers (40.000MHz, offset 255, 16bit)
        Goal: 80.000MB/s transfers (40.000MHz, offset 31, 16bit)
        Curr: 80.000MB/s transfers (40.000MHz, offset 31, 16bit)
        Channel A Target 1 Lun 0 Settings
                Commands Queued 18203
                Commands Active 0
                Command Openings 64
                Max Tagged Openings 64
                Device Queue Frozen Count 0

I've tried a number of variations on filesystems, etc, but it keeps pointing
back to the scsi driver as the problem.  The macihne has the internal AIC
chipset, as well as a 39160 in the pci slot for the external raid.

Is anyone able to suggest how I might move forward with resolving this?

Any help appreciated; I'm feeling desperate...

Thanks,

Tony

-- 
Tony Clark              tony at rsp.com.au
Rising Sun Pictures     Tel: +6 18 8364 6074
Adelaide, Australia     Fax: +61 8 8364 6075
http://www.rsp.com.au/



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