2009/6/26 pluknet <pluk...@gmail.com>: > 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? > > # make > Warning: Object directory not changed from original /usr/src/sys/modules/linux > @ -> /usr/src/sys > machine -> /usr/src/sys/i386/include > cc -c -O2 -fno-strict-aliasing -pipe -Werror -D_KERNEL -DKLD_MODULE > -nostdinc -I- -I. -I@ -I@/contrib/altq -I@/../include -I/usr/include > -finline-limit=8000 -mno-align-long-strings > -mpreferred-stack-boundary=2 -mno-mmx -mno-3dnow -mno-sse -mno-sse2 > -ffreestanding -Wall -Wredundant-decls -Wnested-externs > -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Winline > -Wcast-qual -fformat-extensions -std=c99 > /usr/src/sys/modules/linux/../../i386/linux/linux_genassym.c > sh @/kern/genassym.sh linux_genassym.o > linux_assym.h > echo "#define COMPAT_43 1" > opt_compat.h > echo "#define INET6 1" > opt_inet6.h > :> opt_mac.h > :> opt_vmpage.h > awk -f @/tools/vnode_if.awk @/kern/vnode_if.src -p > load: 1.08 cmd: awk 37581 [bo_wwait] 0.00u 0.00s 0% 1472k > > All others subsystems seems to work. > > db> bt 37581 > Tracing pid 37581 tid 100364 td 0xc93c7b60 > sched_switch(c93c7b60,0,1) at sched_switch+0x143 > mi_switch(1,0,c93c7b60,eed95a24,c06ce6f0,...) at mi_switch+0x1ba > sleepq_switch(ce138854) at sleepq_switch+0x87 > sleepq_wait(ce138854,0,c93c7b60,ce138830,0,...) at sleepq_wait+0x5c > msleep(ce138854,ce1387ec,4d,c096823e,0) at msleep+0x269 > bufobj_wwait(ce138830,0,0,0,ce1387ec,...) at bufobj_wwait+0x37 > nfs_flush(ce138770,1,c93c7b60,0,c93c7b60,...) at nfs_flush+0x8c8 > nfs_close(eed95b80) at nfs_close+0xfd > VOP_CLOSE_APV(c09ec5c0,eed95b80) at VOP_CLOSE_APV+0x38 > vn_close(ce138770,2,cd769100,c93c7b60) at vn_close+0x5a > vn_closefile(c9094900,c93c7b60) at vn_closefile+0xea > fdrop_locked(c9094900,c93c7b60,cf054600,eed95ca8,c06875f3,...) at > fdrop_locked+0xd0 > fdrop(c9094900,c93c7b60,c93c7b60,eed95c64,1,...) at fdrop+0x41 > closef(c9094900,c93c7b60,0,eed95d38,c949ea78,...) at closef+0x42f > kern_close(c93c7b60,3,eed95d30,c08e1d4b,c93c7b60,...) at kern_close+0x20d > close(c93c7b60,eed95d04) at close+0x10 > syscall(3b,808003b,bfbf003b,0,28190a20,...) at syscall+0x2bf > Xint0x80_syscall() at Xint0x80_syscall+0x1f > --- syscall (6, FreeBSD ELF32, close), eip = 0x2816c1e7, esp = > 0xbfbfeb1c, ebp = 0xbfbfeb38 --- > db> show lockedvnods > Locked vnodes > > 0xce138770: tag nfs, type VREG > usecount 1, writecount 0, refcount 3 mountedhere 0 > flags () > v_object 0xcd0a2528 ref 0 pages 1 > lock type nfs: EXCL (count 1) by thread 0xc93c7b60 (pid 37581) > fileid 1372174 fsid 0x100ff05 > db> show lockedbufs > buf at 0xdbf92d08 > b_flags = 0x20000024<vmio,cache,async> > b_error = 0, b_bufsize = 2048, b_bcount = 1779, b_resid = 0 > b_bufobj = (0xce138830), b_data = 0xe2e99000, b_blkno = 0 > b_npages = 1, pages(OBJ, IDX, PA): (0xcd0a2528, 0x0, 0xa8067000) > > db> show proc 37581 > Process 37581 (awk) at 0xc949ea78: > state: NORMAL > uid: 0 gids: 0, 0, 2, 3, 4, 5, 20, 31 > parent: pid 37557 at 0xc949e860 > ABI: FreeBSD ELF32 > arguments: awk > threads: 1 > 100364 D bo_wwait 0xce138854 awk > > Next. > > # umount /usr/src > load: 0.36 cmd: umount 37888 [nfs] 0.00u 0.04s 0% 900k > > db> bt 37888 > Tracing pid 37888 tid 100130 td 0xc93c84e0 > sched_switch(c93c84e0,0,1) at sched_switch+0x143 > mi_switch(1,0,c93c84e0,eeda4aa0,c06ce6f0,...) at mi_switch+0x1ba > sleepq_switch(ce1387c8) at sleepq_switch+0x87 > sleepq_wait(ce1387c8,0,c93c84e0,ce1387c8,4,...) at sleepq_wait+0x5c > msleep(ce1387c8,c0a4af54,50,c09729b5,0,...) at msleep+0x269 > acquire(eeda4b20,40,60000,c93c84e0,0,...) at acquire+0x7b > lockmgr(ce1387c8,2002,ce1387ec,c93c84e0,eeda4b44,...) at lockmgr+0x3fe > vop_stdlock(eeda4b68) at vop_stdlock+0x1e > VOP_LOCK_APV(c09ec5c0,eeda4b68) at VOP_LOCK_APV+0x43 > vn_lock(ce138770,2002,c93c84e0) at vn_lock+0xf4 > vflush(cf4f8cf8,1,0,c93c84e0) at vflush+0x136 > nfs_unmount(cf4f8cf8,8000000,c93c84e0) at nfs_unmount+0x3c > dounmount(cf4f8cf8,8000000,c93c84e0) at dounmount+0x3fa > unmount(c93c84e0,eeda4d04) at unmount+0x279 > syscall(3b,3b,3b,804a4aa,804de10,...) at syscall+0x2bf > Xint0x80_syscall() at Xint0x80_syscall+0x1f > --- syscall (22, FreeBSD ELF32, unmount), eip = 0x280be967, esp = > 0xbfbfe56c, ebp = 0xbfbfe618 --- > db> show lockedvnods > Locked vnodes > > 0xca176aa0: tag ufs, type VDIR > usecount 1, writecount 0, refcount 1 mountedhere 0xcf4f8cf8 > flags () > v_object 0xcb111294 ref 0 pages 0 > lock type ufs: EXCL (count 1) by thread 0xc93c84e0 (pid 37888) > ino 1436672, on dev aacd0s1f > > 0xce138770: tag nfs, type VREG > usecount 1, writecount 0, refcount 4 mountedhere 0 > flags () > v_object 0xcd0a2528 ref 0 pages 1 > lock type nfs: EXCL (count 1) by thread 0xc93c7b60 (pid 37581) > with 1 pending > fileid 1372174 fsid 0x100ff05 > db> show lockedbufs > buf at 0xdbf92d08 > b_flags = 0x20000024<vmio,cache,async> > b_error = 0, b_bufsize = 2048, b_bcount = 1779, b_resid = 0 > b_bufobj = (0xce138830), b_data = 0xe2e99000, b_blkno = 0 > b_npages = 1, pages(OBJ, IDX, PA): (0xcd0a2528, 0x0, 0xa8067000) > db> show proc 37888 > Process 37888 (umount) at 0xc949e000: > state: NORMAL > uid: 0 gids: 0, 0, 2, 3, 4, 5, 20, 31 > parent: pid 37812 at 0xc936ea78 > ABI: FreeBSD ELF32 > arguments: umount > threads: 1 > 100130 D nfs 0xce1387c8 umount > > > -- > wbr, > pluknet > -- wbr, pluknet _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
