On Sun, Apr 12, 2009 at 11:17:10PM -0700, ramana polamarasetti wrote: > > > > >Hi, > > > > > >Recently we hit a problem with one of our file > > systems where 2 kernel threads were killed holding > > a kmutex. Due to this all the applications which use > > the fs blocked waiting for the kmutex. > > > > > >I am wondering why there is no synchronization type > > equivalent to USYNC_PROCESS_ROBUST (which esse > > ntially releases the pthread_mutex if the owner dies) > > for kmutex. > > >I am sure many must have had this kind of problem, > > will there be any issue if the mutex held by a > > dead thread be released after some time? > > > > kthreads don't die; if a mutex is held forever, > > there's a bug. > > > > > > You need to break out mdb/kmdb and find out who holds > > the lock. > > > > Its actually the user thread that got killed but the corresponding > kthread held the mutex for ever.
So is the kernel thread still running? Or did it exit holding a kmutex? Cheers, - jonathan _______________________________________________ opensolaris-code mailing list opensolaris-code@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/opensolaris-code
