2009/6/29 pluknet <[email protected]>: > 2009/6/29 Attilio Rao <[email protected]>: >> 2009/6/29 pluknet <[email protected]>: >>> 2009/6/29 Attilio Rao <[email protected]>: >>>> 2009/6/29 pluknet <[email protected]>: >>>>> 2009/6/29 Attilio Rao <[email protected]>: >>>>>> 2009/6/29 pluknet <[email protected]>: >>>>>>> 2009/6/29 Attilio Rao <[email protected]>: >>>>>>>> 2009/6/29 pluknet <[email protected]>: >>>>>>>>> 2009/6/26 pluknet <[email protected]>: >>>>>>>>>> 2009/6/26 pluknet <[email protected]>: >>>>>>>>>>> Hello. >>>>>>>>>>> >>>>>>>>>>> While building a module on nfs mounted /usr/src >>>>>>>>>>> I got an unkillable process waiting forever in bo_wwait. >>>>>>>>>> >>>>>>>>>> Small note: iface on NFS server has mtu changed from 1500 to 1450. >>>>>>>>>> Can this be a source of the problem? >>>>>>>>> >>>>>>>>> This is 100% reproducible. Lock in the same place. Any hints? >>>>>>>> >>>>>>>> Can you also show the value of ps? >>>>>>>> A precise map of what processes are doing would give an help. >>>>>>>> Also would be useful to printout traces for other threads and not only >>>>>>>> the stucked one. >>>>>>>> >>>>>>> >>>>>>> >From another run: >>>>>> >>>>>> I'm unable to see who would be locking the buffer object in question. >>>>>> Do you have INVARIANT_SUPPORT/INVARIANTS on? >>>>> >>>>> Yes, I do both. >>>>> >>>>>> What revision of /usr/src/sys/kern/vfs_bio.c are you running with? >>>>>> >>>>> >>>>> As of 6.4-R: CVS rev 1.491.2.12.4.1 / SVN rev 183531. >>>> >>>> Please try this patch and report. >>>> >>>> Thanks, >>>> Attilio >>>> >>>> --- src/sys/nfsclient/nfs_vnops.c 2008/02/13 20:44:18 1.281 >>>> +++ src/sys/nfsclient/nfs_vnops.c 2008/03/22 09:15:15 1.282 >>>> @@ -33,7 +33,7 @@ >>>> */ >>>> >>>> #include <sys/cdefs.h> >>>> -__FBSDID("$FreeBSD: >>>> /usr/local/www/cvsroot/FreeBSD/src/sys/nfsclient/nfs_vnops.c,v 1.281 >>>> 2008/02/13 20:44:18 attilio Exp $"); >>>> +__FBSDID("$FreeBSD: >>>> /usr/local/www/cvsroot/FreeBSD/src/sys/nfsclient/nfs_vnops.c,v 1.282 >>>> 2008/03/22 09:15:15 jeff Exp $"); >>>> >>> >>> Do you refer to the whole svn r177493, or is its nfs part will be enough? >>> This only vfs_vnops.c diff seems not applicable without underneath >>> kernel part changes. >>> >>> I'll try. Thanks. >> >> The NFS part should be enough, though I don't understand why it >> doesn't trigger a panic on STABLE_6 as long as, at least in my >> revision, there is an assert for the buffer object lock to be held in >> bufobj_wwait(). What's your sys/kern/vfs_bio.c rev? >> > > As of 6.4-R. > $FreeBSD: src/sys/kern/vfs_bio.c,v 1.491.2.12.4.1 2008/10/02 02:57:24 > kensmith Exp $
That's it, the revision doesn't have the assert. If it does fix the problem for you, I will let you test a more comprehensive patch as there is also at least another fix I want to bring in along with this one (and the relative asserts). Thanks, Attilio -- Peace can only be achieved by understanding - A. Einstein _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
