Re: fork wedging (I think)

2007-03-08 Thread Peter Jeremy
On 2007-Mar-06 14:46:50 +1030, Daniel O'Connor <[EMAIL PROTECTED]> wrote: >Would a crash dump be useful? I think I will be able to update the ataraid >stuff to allow a dump onto the array. I doubt it will be feasible to make any progress without either a crashdump or KDB/DDB access to the system.

Re: fork wedging (I think)

2007-03-05 Thread Daniel O'Connor
On Tuesday 06 March 2007 05:04, Peter Jeremy wrote: > How difficult would it be to build a test system somewhere where the > console was accessible? I don't think you are going to make progress > without console access. Not possible, I can't move the system as it is very remote and there are no

Re: fork wedging (I think)

2007-03-05 Thread Peter Jeremy
On 2007-Mar-05 11:36:41 +1030, Daniel O'Connor <[EMAIL PROTECTED]> wrote: >I was incrementally dumping sysctl trees and when I got to vm it hung.. > >eureka:~>sysctl vm >load: 0.07 cmd: sysctl 72864 [user map] 0.00u 0.00s 0% 852k >load: 0.07 cmd: sysctl 72864 [user map] 0.00u 0.00s 0% 852k >load:

Re: fork wedging (I think)

2007-03-04 Thread Daniel O'Connor
On Monday 05 March 2007 11:36, Daniel O'Connor wrote: > I tried to reboot in another window but.. > eureka:~>reboot > load: 0.06 cmd: csh 71159 [allproc] 0.03u 0.00s 0% 4652k Interestingly this process did eventually finish. The system hasn't rebooted yet but perhaps it will eventually. -- Dan

Re: fork wedging (I think)

2007-03-04 Thread Daniel O'Connor
On Thursday 01 March 2007 17:35, Daniel O'Connor wrote: > > in /rescue and use './sysctl' (and other commands in rescue). I think > > you will still be able to execute static executables in the current > > directory vis a relative path even if the FS is deadlocked. (As long > > as your shell isn'

Re: fork wedging (I think)

2007-02-28 Thread Daniel O'Connor
On Thursday 01 March 2007 17:14, Peter Jeremy wrote: > >The problem seems to occur when the acquisition process (called the > > Recorder) tries to fork off a new child. > > Your description and the ps output suggest a filesystem deadlock. When it happened last time I had no problem running command

Re: fork wedging (I think)

2007-02-28 Thread Peter Jeremy
On 2007-Mar-01 11:48:54 +1030, Daniel O'Connor <[EMAIL PROTECTED]> wrote: >The problem seems to occur when the acquisition process (called the Recorder) >tries to fork off a new child. Your description and the ps output suggest a filesystem deadlock. >Does anyone have any suggestions for debuggin

fork wedging (I think)

2007-02-28 Thread Daniel O'Connor
We run a set of meteor and wind radar systems based on FreeBSD and one of them I am seeing an odd problem that does not occur very often (once a month perhaps). The main process we use for gathering data regularly fork()s children off to process data (at each 30 minute acquisition cycle). The data