[ENBD] fr1 hangs when trying to access raid device..

[Peter T. Breuer]

"A month of sundays ago Peter T. Breuer wrote:"
> But what stops you trying it on 240 like that? I'll try it on 9.

Yes, I just tried it wth major=9 and it works (only change being the
req=CURRENT replacement that I suggested earlier).

   209  19:16   sudo insmod ./fr1.o major=9
   210  19:16   cat /proc/fr1stat
   211  19:16   sudo vi /etc/raidtab
   212  19:16   sudo mkraid --dangerous-no-resync --really-force /dev/md0
   213  19:16   cat /proc/fr1stat
   214  19:17   sync
   215  19:17   head -10c /dev/md0
   216  19:17   sudo head -10c /dev/md0
   217  19:17   sudo dd if=/dev/zero of=/dev/md0 count=10 &

dmesg output shows some diagnostics ..

fr1 ioctl 800c0910
fr1 ioctl 800c0910
fr1 ioctl 40480923
fr1 ioctl 40140921
fr1 hotadd component 07:00[0] to device 0
fr1 added new device 07:00 to cb424800 with err 0
fr1 ioctl 40140921
fr1 hotadd component 07:01[1] to device 0
fr1 added new device 07:01 to cb424800 with err 0
fr1 ioctl 400c0930
promoted request c6b9bf60
promoted request c6b9bc60
promoted request c6b9b960
promoted request c6b9b660
promoted request c6b9b360

fr1stat shows what it should ..


betty:/usr/oboe/ptb/lang/c/fr1/fr1-1.0% cat /proc/fr1stat
Personalities : [raid1] 
read_ahead 4 sectors
fr10 : active fr1 [dev 07:00][0] [dev 07:01][1]
      2048 blocks
      

So I would guess that there is probably a procedural problem in your
experiment.  Possibly you are not loading the code that you think you
are?

(I am running SMP, but with one processor, 2.4.19).

Peter