Chad Mynhier wrote:
> I'm trying to debug a Solaris 8 kernel hang with mdb. (This appears > to be a kernel hang and not simply a process hang, as we can get no ^^^^^^^^^^^^^^^^^ What made you think that there is a kernel hang? - Are the shells/interactive cmds stopped responding - Is the system not pingable - not reachable via telnet/rlogin - did the GUI just freeze - mouse just doesn't work - cursor does not move - a few cmds are running eternally - None of the process related cmds are finishing - System is not servicing the requests it is supposed to, mail/web/file server - Nothing other than stop-A worked !! Only if there actually is a hang, will you threads with interesting stacks as Gavin said; From the stacks of the threads of your crash file, there doesn't seem to be a hang !! -surya > response from the server and need to drop it to the ok prompt and > reboot.) > > I've done "::walk thread | ::findstack". Of 95 threads, I get a stack > trace for 79, and of those, 63 are sitting in cv_wait(). Here are > some of the stack traces: > > 28 > cv_wait+0x38() > taskq_thread+0x110() > thread_start+4() > > 6 > cv_wait+0x38() > md_daemon+0x144() > thread_start+4() > > 4 > cv_wait+0x38() > taskq_thread+0xd4() > thread_start+4() > > 4 > cv_wait+0x38() > sqthread+0x14c() > thread_start+4() > > > 4 > cv_wait+0x38() > ufs_thread_run+0x130() > ufs_thread_delete+0x4c() > thread_start+4() > > My first thought is that the above might be perfectly normal behavior. > Is there anything I should be suspicious about? If so, how can I > probe deeper (given that this is Solaris 8)? If not, does anyone have > any pointers on what I could be looking at? > > Thanks, > Chad Mynhier > _______________________________________________ > mdb-discuss mailing list > mdb-discuss at opensolaris.org
