Re: init scripts problems ?

denis bonnenfant wrote:
> Peter T. Breuer wrote:
> 
>> "Also sprach ptb:"
>>
>>> I may be able to up the openers count to avoid this, but it isn't very
>>> clear.  I'll have to locate and study the kernel code responsible.
>>> Sigh.
> 
> 
>> I should probably raise the openers count by an extra one on the first 
>> client daemon claiming the socket, for the very first time. I guess
>> I'll have to do one extra de count on module removal! Sigh sigh sigh.
>>
>> Raising the openers count is clearly the thing to do.
>>
>> Peter
> 
> 
> For the moment, it works! it's not really clean, i agree.

I managed to crash it again !

I set up the double link, create a fr1 array on A-2, mount,

then /etc/init.d/enbd stop client, stopping both

It seems to work, nda is out of raid. but enbd-client is not killed.
echo 0 > /proc/nbdinfo does nothing

mdadm /dev/md0 --add /dev/nda is blocked, and there is no way out.



ps ax :

  3776 ?        D      0:04 [enbd-client]
  3777 ?        D      0:04 [enbd-client]
  3975 pts/0    D      0:00 enbd-client se3-croise 12355 -i A-2 -n 2 -m -b 512 /dev/nda
  3982 pts/0    D+     0:00 mdadm /dev/md0 --add /dev/nda
  4094 tty1     D      0:00 enbd-client se3-croise 12355 -i A-2 -n 2 -m -b 512 /dev/nda


it's really stange, it looks like nda is registered as ndb in the kernel !

dmesg :

ENBD #2251[35]: enbd_clr_queue unqueued 0 reqs
ENBD #3288[32]: enbd_soft_reset INVALIDATE DEVICE nda BEGIN
ENBD #3302[28]: enbd_soft_reset INVALIDATE DEVICE nda DONE
ENBD #3315[28]: enbd_soft_reset run enbd_request on nda
ENBD #3193[18]: enbd_disable disabled device ndb
ENBD #2251[36]: enbd_clr_queue unqueued 0 reqs
ENBD #3288[33]: enbd_soft_reset INVALIDATE DEVICE ndb BEGIN
ENBD #3292[4]: enbd_soft_reset invalidate would crash on device 00000000 with inode 00000000
ENBD #3293[4]: enbd_soft_reset aborting invalidate


ldap:~# cat /proc/nbdinfo
Device a:       Open
[a] State:      verify, rw, disabled, last error 0, lives 11, bp 0
[a] Queued:     +0R/0W curr (check 0R/0W) +64R/30W max
[a] Buffersize: 262144  (sectors=512, blocks=512)
[a] Blocksize:  512     (log=9)
[a] Size:       104857KB
[a] Blocks:     0
[a] Sockets:    2       (+)     (.)
[a] Requested:  206.23K (104K)  (101K)  265R/205.9KW    max 248
[a] Despatched: 206.21K (104K)  (101K)  257R/205.9KW    md5 0W (0 eq, 0 ne, 0 dn)
[a] Errored:    100     (0)     (0)     0+100
[a] Pending:    0       (0)     (0)     0R/0W+0R/0W
[a] B/s now:    0       (0R+0W)
[a] B/s ave:    79.5K   (0R+79.5KW)
[a] B/s max:    2.26G   (58.8MR+2.20GW)
[a] Spectrum:   5%1     2%2     2%8     88%128
[a] Kthreads:   0       (0 waiting/0 running/1 max)
[a] Cthreads:   0       (-)     (-)
[a] Cpids:      0       (3776)  (3777)
Device b:       Open
[b] State:      verify, rw, disabled, last error 0, lives 11, bp 0
[b] Queued:     +0R/0W curr (check 0R/0W) +0R/1W max
[b] Buffersize: 0       (sectors=512, blocks=512)
[b] Blocksize:  512     (log=9)
[b] Size:       104857KB
[b] Blocks:     0
[b] Sockets:    2       (-)     (.)
[b] Requested:  0       (0)     (0)     0R/0W   max 0
[b] Despatched: 0       (0)     (0)     0R/0W   md5 0W (0 eq, 0 ne, 0 dn)
[b] Errored:    0       (0)     (0)     0+0
[b] Pending:    0       (0)     (0)     0R/0W+0R/0W
[b] B/s now:    0       (0R+0W)
[b] B/s ave:    0       (0R+0W)
[b] B/s max:    0       (0R+0W)
[b] Spectrum:   100%0
[b] Kthreads:   0       (0 waiting/0 running/0 max)
[b] Cthreads:   0       (-)     (-)
[b] Cpids:      0       (0)     (0)
Device c-p:     Closed