* RE: NFSD on XFS with RT subvolume
@ 2008-02-06 14:08 ` Rabeeh Khoury
0 siblings, 0 replies; 5+ messages in thread
From: Rabeeh Khoury @ 2008-02-06 14:08 UTC (permalink / raw)
To: nscott; +Cc: linux-fsdevel, xfs, Lennert Buijtenhek
> >
> > Exporting an XFS volume with kernel NFSD when real-time subvolume is
> > enabled hangs the kernel.
> >
> > I'm using vanilla LK 2.6.22.7; first I create the XFS volume with
two
> > partitions of 20GB each with extent size of 1MB; then I create a
> > subdirectory in the volume and mark it (using xfs_io util) as it
belongs
> > to the rt subvolume with inheritance flag.
> >
> > After mounting that volume through NFSv3 / UDP; and trying a 'dd
> > if=/dev/zero of=/mnt/rt/test bs=1M count=1000' the machine running
NFSD
> > hangs infinitely.
>
> Did you manage to get a stack trace, OOC? No reason why it shouldn't
> work AFAIK.
I didn't mention that I'm using ARM EABI machine for that; but the same
scenario happened on Ubuntu Gutsy 7.10.
The serial console stops responding, but getting Sysrq with showPc
function working I'v got some stack traces (Look for #stack-trace
below).
I'm running Fedora-8 on the ARM machine using xfsprogs-2.9.4-4.f8 RPM.
The output of formatting /dev/sda5 and /dev/sda6 as the rt-subvolume is
the following, but this time /dev/sda5 is 2GByte and /dev/sda6 is
20GByte (look for #mkfs.xfs).
Another note is that sometimes I'm getting an error message that XFS is
trying to access LBA beyond the volume.
Maybe you can suggest few tests that I can perform to figure out what's
the root cause?
--------------- #mkfs.xfs ----------------------
meta-data=/dev/sda5 isize=256 agcount=8, agsize=61246
blks
= sectsz=512 attr=0
data = bsize=4096 blocks=489968, imaxpct=25
= sunit=0 swidth=0 blks, unwritten=1
naming =version 2 bsize=4096
log =internal log bsize=4096 blocks=2560, version=1
= sectsz=512 sunit=0 blks, lazy-count=0
realtime =/dev/sda6 extsz=1048576 blocks=4885760,
rtextents=19085
-------------- #stack-trace ---------------------
-bash-3.2# SysRq : Show Regs
Pid: 1208, comm: nfsd
CPU: 0 Not tainted (2.6.22.7 #7)
PC is at xfs_iext_get_ext+0x60/0x88
LR is at 0x1ff02
pc : [<c02349b4>] lr : [<0001ff02>] psr: 80000013
sp : c5cb3a68 ip : 000000a8 fp : c5cb3a7c
r10: c5cb3c60 r9 : c5cb3d0c r8 : c5984060
r7 : 0001ffab r6 : 0001ffac r5 : c5cb3c60 r4 : 000fffff
r3 : c5cb3a6c r2 : 0001ffac r1 : 000000aa r0 : c49d1800
Flags: Nzcv IRQs on FIQs on Mode SVC_32 Segment user
Control: a005317f Table: 07b38000 DAC: 00000015 [<c00f1b3c>]
(show_regs+0x0/0x50) from [<c02c8278>] (sysrq_handle_showregs+0x20/0x28)
r4:c03e5654
[<c02c8258>] (sysrq_handle_showregs+0x0/0x28) from [<c02c8110>]
(__handle_sysrq+0xa4/0x148) [<c02c806c>] (__handle_sysrq+0x0/0x148) from
[<c02c841c>] (handle_sysrq+0x34/0x40) [<c02c83e8>]
(handle_sysrq+0x0/0x40) from [<c02ccd40>] (receive_chars+0x17c/0x2c4)
[<c02ccbc4>] (receive_chars+0x0/0x2c4) from [<c02cdec8>]
(serial8250_interrupt+0x74/0x13c) [<c02cde54>]
(serial8250_interrupt+0x0/0x13c) from [<c013b804>]
(handle_IRQ_event+0x44/0x84) [<c013b7c0>] (handle_IRQ_event+0x0/0x84)
from [<c013d080>] (handle_level_irq+0xe0/0xfc) r7:0001ffab r6:00000000
r5:00000003 r4:c03d8998 [<c013cfa0>] (handle_level_irq+0x0/0xfc) from
[<c0021048>] (asm_do_IRQ+0x48/0x64)
r5:c03d8998 r4:00000003
[<c0021000>] (asm_do_IRQ+0x0/0x64) from [<c003bef0>]
(__irq_svc+0x30/0x100) Exception stack(0xc5cb3a20 to 0xc5cb3a68)
3a20: c49d1800 000000aa 0001ffac c5cb3a6c 000fffff c5cb3c60 0001ffac
0001ffab
3a40: c5984060 c5cb3d0c c5cb3c60 c5cb3a7c 000000a8 c5cb3a68 0001ff02
c02349b4
3a60: 80000013 ffffffff
r6:00000002 r5:f1020000 r4:ffffffff
[<c0234954>] (xfs_iext_get_ext+0x0/0x88) from [<c0212c20>]
(xfs_bmap_add_extent_hole_delay+0x54/0x608)
[<c0212bcc>] (xfs_bmap_add_extent_hole_delay+0x0/0x608) from
[<c0214f8c>] (xfs_bmap_add_extent+0x1bc/0x4f8) [<c0214dd0>]
(xfs_bmap_add_extent+0x0/0x4f8) from [<c0215ac4>]
(xfs_bunmapi+0x7fc/0xf38) [<c02152c8>] (xfs_bunmapi+0x0/0xf38) from
[<c0236e9c>] (xfs_itruncate_finish+0x1e4/0x368)
[<c0236cb8>] (xfs_itruncate_finish+0x0/0x368) from [<c025392c>]
(xfs_setattr+0x8b0/0xde4) [<c025307c>] (xfs_setattr+0x0/0xde4) from
[<c025ffd8>] (xfs_vn_setattr+0x16c/0x18c) [<c025fe6c>]
(xfs_vn_setattr+0x0/0x18c) from [<c016b5bc>] (notify_change+0x124/0x244)
r7:c5b26758 r6:00000068 r5:c5985078 r4:c7d9b8f0 [<c016b498>]
(notify_change+0x0/0x244) from [<c01c9180>] (nfsd_setattr+0x368/0x50c)
[<c01c8e18>] (nfsd_setattr+0x0/0x50c) from [<c01cfdc4>]
(nfsd3_proc_setattr+0xa0/0xc4) [<c01cfd24>]
(nfsd3_proc_setattr+0x0/0xc4) from [<c01c452c>]
(nfsd_dispatch+0xd8/0x1e0) r7:c2b3a000 r6:c03db9a4 r5:00000018
r4:c62ad000 [<c01c4454>] (nfsd_dispatch+0x0/0x1e0) from [<c03b2ecc>]
(svc_process+0x448/0x7e8)
r8:c03db944 r7:00000014 r6:c62ad000 r5:c2b3a000 r4:c03db9a4
[<c03b2a84>] (svc_process+0x0/0x7e8) from [<c01c4ba4>]
(nfsd+0x17c/0x2d4) [<c01c4a28>] (nfsd+0x0/0x2d4) from [<c011dee4>]
(do_exit+0x0/0x7c4) SysRq : Show Regs
Pid: 1208, comm: nfsd
CPU: 0 Not tainted (2.6.22.7 #7)
PC is at xfs_trans_dup+0xd0/0xf4
LR is at 0xc60e16b8
pc : [<c024b788>] lr : [<c60e16b8>] psr: 60000013
sp : c5cb3ca8 ip : 00000002 fp : c5cb3cc4
r10: c5cb3dd4 r9 : c5cb3d24 r8 : 00000000
r7 : c21cf098 r6 : c21cf310 r5 : 00000000 r4 : 00000000
r3 : 60000093 r2 : c6017000 r1 : 60000013 r0 : 00000004
Flags: nZCv IRQs on FIQs on Mode SVC_32 Segment user
Control: a005317f Table: 07b38000 DAC: 00000015 [<c00f1b3c>]
(show_regs+0x0/0x50) from [<c02c8278>] (sysrq_handle_showregs+0x20/0x28)
r4:c03e5654
[<c02c8258>] (sysrq_handle_showregs+0x0/0x28) from [<c02c8110>]
(__handle_sysrq+0xa4/0x148) [<c02c806c>] (__handle_sysrq+0x0/0x148) from
[<c02c841c>] (handle_sysrq+0x34/0x40) [<c02c83e8>]
(handle_sysrq+0x0/0x40) from [<c02ccd40>] (receive_chars+0x17c/0x2c4)
[<c02ccbc4>] (receive_chars+0x0/0x2c4) from [<c02cdec8>]
(serial8250_interrupt+0x74/0x13c) [<c02cde54>]
(serial8250_interrupt+0x0/0x13c) from [<c013b804>]
(handle_IRQ_event+0x44/0x84) [<c013b7c0>] (handle_IRQ_event+0x0/0x84)
from [<c013d080>] (handle_level_irq+0xe0/0xfc)
r7:c21cf098 r6:00000000 r5:00000003 r4:c03d8998 [<c013cfa0>]
(handle_level_irq+0x0/0xfc) from [<c0021048>] (asm_do_IRQ+0x48/0x64)
r5:c03d8998 r4:00000003
[<c0021000>] (asm_do_IRQ+0x0/0x64) from [<c003bef0>]
(__irq_svc+0x30/0x100) Exception stack(0xc5cb3c60 to 0xc5cb3ca8)
3c60: 00000004 60000013 c6017000 60000093 00000000 00000000 c21cf310
c21cf098
3c80: 00000000 c5cb3d24 c5cb3dd4 c5cb3cc4 00000002 c5cb3ca8 c60e16b8
c024b788
3ca0: 60000013 ffffffff
r6:00000002 r5:f1020000 r4:ffffffff
[<c024b6b8>] (xfs_trans_dup+0x0/0xf4) from [<c0236f44>]
(xfs_itruncate_finish+0x28c/0x368)
r7:00000000 r6:00000000 r5:c5984060 r4:c21cf310 [<c0236cb8>]
(xfs_itruncate_finish+0x0/0x368) from [<c025392c>]
(xfs_setattr+0x8b0/0xde4) [<c025307c>] (xfs_setattr+0x0/0xde4) from
[<c025ffd8>] (xfs_vn_setattr+0x16c/0x18c) [<c025fe6c>]
(xfs_vn_setattr+0x0/0x18c) from [<c016b5bc>] (notify_change+0x124/0x244)
r7:c5b26758 r6:00000068 r5:c5985078 r4:c7d9b8f0 [<c016b498>]
(notify_change+0x0/0x244) from [<c01c9180>] (nfsd_setattr+0x368/0x50c)
[<c01c8e18>] (nfsd_setattr+0x0/0x50c) from [<c01cfdc4>]
(nfsd3_proc_setattr+0xa0/0xc4) [<c01cfd24>]
(nfsd3_proc_setattr+0x0/0xc4) from [<c01c452c>]
(nfsd_dispatch+0xd8/0x1e0) r7:c2b3a000 r6:c03db9a4 r5:00000018
r4:c62ad000 [<c01c4454>] (nfsd_dispatch+0x0/0x1e0) from [<c03b2ecc>]
(svc_process+0x448/0x7e8)
r8:c03db944 r7:00000014 r6:c62ad000 r5:c2b3a000 r4:c03db9a4
[<c03b2a84>] (svc_process+0x0/0x7e8) from [<c01c4ba4>]
(nfsd+0x17c/0x2d4) [<c01c4a28>] (nfsd+0x0/0x2d4) from [<c011dee4>]
(do_exit+0x0/0x7c4) SysRq : Show Regs
Pid: 1208, comm: nfsd
CPU: 0 Not tainted (2.6.22.7 #7)
PC is at xfs_bunmapi+0xbfc/0xf38
LR is at 0x2
pc : [<c0215ec4>] lr : [<00000002>] psr: 60000013
sp : c5cb3bc8 ip : c5cb3bc8 fp : c5cb3cc4
r10: 00000000 r9 : c59840b0 r8 : 00000000
r7 : 00000bee r6 : 00000000 r5 : 00000000 r4 : 00000002
r3 : 00000000 r2 : 00000000 r1 : 00053566 r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode SVC_32 Segment user
Control: a005317f Table: 07b38000 DAC: 00000015 [<c00f1b3c>]
(show_regs+0x0/0x50) from [<c02c8278>] (sysrq_handle_showregs+0x20/0x28)
r4:c03e5654
[<c02c8258>] (sysrq_handle_showregs+0x0/0x28) from [<c02c8110>]
(__handle_sysrq+0xa4/0x148) [<c02c806c>] (__handle_sysrq+0x0/0x148) from
[<c02c841c>] (handle_sysrq+0x34/0x40) [<c02c83e8>]
(handle_sysrq+0x0/0x40) from [<c02ccd40>] (receive_chars+0x17c/0x2c4)
[<c02ccbc4>] (receive_chars+0x0/0x2c4) from [<c02cdec8>]
(serial8250_interrupt+0x74/0x13c) [<c02cde54>]
(serial8250_interrupt+0x0/0x13c) from [<c013b804>]
(handle_IRQ_event+0x44/0x84) [<c013b7c0>] (handle_IRQ_event+0x0/0x84)
from [<c013d080>] (handle_level_irq+0xe0/0xfc) r7:00000bee r6:00000000
r5:00000003 r4:c03d8998 [<c013cfa0>] (handle_level_irq+0x0/0xfc) from
[<c0021048>] (asm_do_IRQ+0x48/0x64)
r5:c03d8998 r4:00000003
[<c0021000>] (asm_do_IRQ+0x0/0x64) from [<c003bef0>]
(__irq_svc+0x30/0x100) Exception stack(0xc5cb3b80 to 0xc5cb3bc8)
3b80: 00000000 00053566 00000000 00000000 00000002 00000000 00000000
00000bee
3ba0: 00000000 c59840b0 00000000 c5cb3cc4 c5cb3bc8 c5cb3bc8 00000002
c0215ec4
3bc0: 60000013 ffffffff
r6:00000002 r5:f1020000 r4:ffffffff
[<c02152c8>] (xfs_bunmapi+0x0/0xf38) from [<c0236e9c>]
(xfs_itruncate_finish+0x1e4/0x368)
[<c0236cb8>] (xfs_itruncate_finish+0x0/0x368) from [<c025392c>]
(xfs_setattr+0x8b0/0xde4) [<c025307c>] (xfs_setattr+0x0/0xde4) from
[<c025ffd8>] (xfs_vn_setattr+0x16c/0x18c) [<c025fe6c>]
(xfs_vn_setattr+0x0/0x18c) from [<c016b5bc>] (notify_change+0x124/0x244)
r7:c5b26758 r6:00000068 r5:c5985078 r4:c7d9b8f0 [<c016b498>]
(notify_change+0x0/0x244) from [<c01c9180>] (nfsd_setattr+0x368/0x50c)
[<c01c8e18>] (nfsd_setattr+0x0/0x50c) from [<c01cfdc4>]
(nfsd3_proc_setattr+0xa0/0xc4) [<c01cfd24>]
(nfsd3_proc_setattr+0x0/0xc4) from [<c01c452c>]
(nfsd_dispatch+0xd8/0x1e0) r7:c2b3a000 r6:c03db9a4 r5:00000018
r4:c62ad000 [<c01c4454>] (nfsd_dispatch+0x0/0x1e0) from [<c03b2ecc>]
(svc_process+0x448/0x7e8)
r8:c03db944 r7:00000014 r6:c62ad000 r5:c2b3a000 r4:c03db9a4
[<c03b2a84>] (svc_process+0x0/0x7e8) from [<c01c4ba4>]
(nfsd+0x17c/0x2d4) [<c01c4a28>] (nfsd+0x0/0x2d4) from [<c011dee4>]
(do_exit+0x0/0x7c4) SysRq : Show Regs
Pid: 1208, comm: nfsd
CPU: 0 Not tainted (2.6.22.7 #7)
PC is at xfs_bmap_add_extent+0x3c4/0x4f8 LR is at
xfs_iext_insert+0x34/0x50
pc : [<c0215194>] lr : [<c0235df4>] psr: 60000013
sp : c5cb3b40 ip : 000fffff fp : c5cb3bc4
r10: c5cb3c88 r9 : c5cb3d0c r8 : c5984060
r7 : 00064f35 r6 : 00000000 r5 : 00000000 r4 : 00000000
r3 : 00000001 r2 : c5cb3b90 r1 : c5984165 r0 : 00000000
Flags: nZCv IRQs on FIQs on Mode SVC_32 Segment user
Control: a005317f Table: 07b38000 DAC: 00000015 [<c00f1b3c>]
(show_regs+0x0/0x50) from [<c02c8278>] (sysrq_handle_showregs+0x20/0x28)
r4:c03e5654
[<c02c8258>] (sysrq_handle_showregs+0x0/0x28) from [<c02c8110>]
(__handle_sysrq+0xa4/0x148) [<c02c806c>] (__handle_sysrq+0x0/0x148) from
[<c02c841c>] (handle_sysrq+0x34/0x40) [<c02c83e8>]
(handle_sysrq+0x0/0x40) from [<c02ccd40>] (receive_chars+0x17c/0x2c4)
[<c02ccbc4>] (receive_chars+0x0/0x2c4) from [<c02cdec8>]
(serial8250_interrupt+0x74/0x13c) [<c02cde54>]
(serial8250_interrupt+0x0/0x13c) from [<c013b804>]
(handle_IRQ_event+0x44/0x84) [<c013b7c0>] (handle_IRQ_event+0x0/0x84)
from [<c013d080>] (handle_level_irq+0xe0/0xfc)
r7:00064f35 r6:00000000 r5:00000003 r4:c03d8998 [<c013cfa0>]
(handle_level_irq+0x0/0xfc) from [<c0021048>] (asm_do_IRQ+0x48/0x64)
r5:c03d8998 r4:00000003
[<c0021000>] (asm_do_IRQ+0x0/0x64) from [<c003bef0>]
(__irq_svc+0x30/0x100) Exception stack(0xc5cb3af8 to 0xc5cb3b40)
3ae0: 00000000
c5984165
3b00: c5cb3b90 00000001 00000000 00000000 00000000 00064f35 c5984060
c5cb3d0c
3b20: c5cb3c88 c5cb3bc4 000fffff c5cb3b40 c0235df4 c0215194 60000013
ffffffff
r6:00000002 r5:f1020000 r4:ffffffff
[<c0214dd0>] (xfs_bmap_add_extent+0x0/0x4f8) from [<c0215ac4>]
(xfs_bunmapi+0x7fc/0xf38) [<c02152c8>] (xfs_bunmapi+0x0/0xf38) from
[<c0236e9c>] (xfs_itruncate_finish+0x1e4/0x368)
[<c0236cb8>] (xfs_itruncate_finish+0x0/0x368) from [<c025392c>]
(xfs_setattr+0x8b0/0xde4) [<c025307c>] (xfs_setattr+0x0/0xde4) from
[<c025ffd8>] (xfs_vn_setattr+0x16c/0x18c) [<c025fe6c>]
(xfs_vn_setattr+0x0/0x18c) from [<c016b5bc>] (notify_change+0x124/0x244)
r7:c5b26758 r6:00000068 r5:c5985078 r4:c7d9b8f0 [<c016b498>]
(notify_change+0x0/0x244) from [<c01c9180>] (nfsd_setattr+0x368/0x50c)
[<c01c8e18>] (nfsd_setattr+0x0/0x50c) from [<c01cfdc4>]
(nfsd3_proc_setattr+0xa0/0xc4) [<c01cfd24>]
(nfsd3_proc_setattr+0x0/0xc4) from [<c01c452c>]
(nfsd_dispatch+0xd8/0x1e0) r7:c2b3a000 r6:c03db9a4 r5:00000018
r4:c62ad000 [<c01c4454>] (nfsd_dispatch+0x0/0x1e0) from [<c03b2ecc>]
(svc_process+0x448/0x7e8)
r8:c03db944 r7:00000014 r6:c62ad000 r5:c2b3a000 r4:c03db9a4
[<c03b2a84>] (svc_process+0x0/0x7e8) from [<c01c4ba4>]
(nfsd+0x17c/0x2d4) [<c01c4a28>] (nfsd+0x0/0x2d4) from [<c011dee4>]
(do_exit+0x0/0x7c4) SysRq : Show Regs
Pid: 1208, comm: nfsd
CPU: 0 Not tainted (2.6.22.7 #7)
PC is at xfs_trans_unreserve_and_mod_sb+0x8/0x2a8
LR is at _xfs_trans_commit+0x6c/0x354
pc : [<c024b1cc>] lr : [<c024c5dc>] psr: 20000013
sp : c5cb3bb0 ip : c5cb3bc0 fp : c5cb3cc4
r10: c6017000 r9 : c5cb3d24 r8 : 00000000
r7 : 00000000 r6 : 00000010 r5 : c21cf098 r4 : 00000000
r3 : 00000000 r2 : 00000005 r1 : 00000004 r0 : c21cf098
Flags: nzCv IRQs on FIQs on Mode SVC_32 Segment user
Control: a005317f Table: 07b38000 DAC: 00000015 [<c00f1b3c>]
(show_regs+0x0/0x50) from [<c02c8278>] (sysrq_handle_showregs+0x20/0x28)
r4:c03e5654
[<c02c8258>] (sysrq_handle_showregs+0x0/0x28) from [<c02c8110>]
(__handle_sysrq+0xa4/0x148) [<c02c806c>] (__handle_sysrq+0x0/0x148) from
[<c02c841c>] (handle_sysrq+0x34/0x40) [<c02c83e8>]
(handle_sysrq+0x0/0x40) from [<c02ccd40>] (receive_chars+0x17c/0x2c4)
[<c02ccbc4>] (receive_chars+0x0/0x2c4) from [<c02cdec8>]
(serial8250_interrupt+0x74/0x13c) [<c02cde54>]
(serial8250_interrupt+0x0/0x13c) from [<c013b804>]
(handle_IRQ_event+0x44/0x84) [<c013b7c0>] (handle_IRQ_event+0x0/0x84)
from [<c013d080>] (handle_level_irq+0xe0/0xfc) r7:00000000 r6:00000000
r5:00000003 r4:c03d8998 [<c013cfa0>] (handle_level_irq+0x0/0xfc) from
[<c0021048>] (asm_do_IRQ+0x48/0x64)
r5:c03d8998 r4:00000003
[<c0021000>] (asm_do_IRQ+0x0/0x64) from [<c003bef0>]
(__irq_svc+0x30/0x100) Exception stack(0xc5cb3b68 to 0xc5cb3bb0)
3b60: c21cf098 00000004 00000005 00000000 00000000
c21cf098
3b80: 00000010 00000000 00000000 c5cb3d24 c6017000 c5cb3cc4 c5cb3bc0
c5cb3bb0
3ba0: c024c5dc c024b1cc 20000013 ffffffff
r6:00000002 r5:f1020000 r4:ffffffff
[<c024c570>] (_xfs_trans_commit+0x0/0x354) from [<c0236f5c>]
(xfs_itruncate_finish+0x2a4/0x368)
[<c0236cb8>] (xfs_itruncate_finish+0x0/0x368) from [<c025392c>]
(xfs_setattr+0x8b0/0xde4) [<c025307c>] (xfs_setattr+0x0/0xde4) from
[<c025ffd8>] (xfs_vn_setattr+0x16c/0x18c) [<c025fe6c>]
(xfs_vn_setattr+0x0/0x18c) from [<c016b5bc>] (notify_change+0x124/0x244)
r7:c5b26758 r6:00000068 r5:c5985078 r4:c7d9b8f0 [<c016b498>]
(notify_change+0x0/0x244) from [<c01c9180>] (nfsd_setattr+0x368/0x50c)
[<c01c8e18>] (nfsd_setattr+0x0/0x50c) from [<c01cfdc4>]
(nfsd3_proc_setattr+0xa0/0xc4) [<c01cfd24>]
(nfsd3_proc_setattr+0x0/0xc4) from [<c01c452c>]
(nfsd_dispatch+0xd8/0x1e0) r7:c2b3a000 r6:c03db9a4 r5:00000018
r4:c62ad000 [<c01c4454>] (nfsd_dispatch+0x0/0x1e0) from [<c03b2ecc>]
(svc_process+0x448/0x7e8)
r8:c03db944 r7:00000014 r6:c62ad000 r5:c2b3a000 r4:c03db9a4
[<c03b2a84>] (svc_process+0x0/0x7e8) from [<c01c4ba4>]
(nfsd+0x17c/0x2d4) [<c01c4a28>] (nfsd+0x0/0x2d4) from [<c011dee4>]
(do_exit+0x0/0x7c4) SysRq : Show Regs
Pid: 1208, comm: nfsd
CPU: 0 Not tainted (2.6.22.7 #7)
PC is at kmem_zone_zalloc+0x14/0x40
LR is at kmem_zone_alloc+0x6c/0xc0
pc : [<c0258104>] lr : [<c025809c>] psr: a0000013
sp : c5cb3c90 ip : c09b74a0 fp : c5cb3ca4
r10: c5cb3dd4 r9 : c5cb3d24 r8 : 00000000
r7 : 00000000 r6 : c21cf098 r5 : c5984060 r4 : c7c3bbc0
r3 : 00000004 r2 : 00000001 r1 : c09b74b0 r0 : c21cf310
Flags: NzCv IRQs on FIQs on Mode SVC_32 Segment user
Control: a005317f Table: 07b38000 DAC: 00000015 [<c00f1b3c>]
(show_regs+0x0/0x50) from [<c02c8278>] (sysrq_handle_showregs+0x20/0x28)
r4:c03e5654
[<c02c8258>] (sysrq_handle_showregs+0x0/0x28) from [<c02c8110>]
(__handle_sysrq+0xa4/0x148) [<c02c806c>] (__handle_sysrq+0x0/0x148) from
[<c02c841c>] (handle_sysrq+0x34/0x40) [<c02c83e8>]
(handle_sysrq+0x0/0x40) from [<c02ccd40>] (receive_chars+0x17c/0x2c4)
[<c02ccbc4>] (receive_chars+0x0/0x2c4) from [<c02cdec8>]
(serial8250_interrupt+0x74/0x13c) [<c02cde54>]
(serial8250_interrupt+0x0/0x13c) from [<c013b804>]
(handle_IRQ_event+0x44/0x84) [<c013b7c0>] (handle_IRQ_event+0x0/0x84)
from [<c013d080>] (handle_level_irq+0xe0/0xfc) r7:00000000 r6:00000000
r5:00000003 r4:c03d8998 [<c013cfa0>] (handle_level_irq+0x0/0xfc) from
[<c0021048>] (asm_do_IRQ+0x48/0x64)
r5:c03d8998 r4:00000003
[<c0021000>] (asm_do_IRQ+0x0/0x64) from [<c003bef0>]
(__irq_svc+0x30/0x100) Exception stack(0xc5cb3c48 to 0xc5cb3c90)
3c40: c21cf310 c09b74b0 00000001 00000004 c7c3bbc0
c5984060
3c60: c21cf098 00000000 00000000 c5cb3d24 c5cb3dd4 c5cb3ca4 c09b74a0
c5cb3c90
3c80: c025809c c0258104 a0000013 ffffffff
r6:00000002 r5:f1020000 r4:ffffffff
[<c02580f0>] (kmem_zone_zalloc+0x0/0x40) from [<c024b6d8>]
(xfs_trans_dup+0x20/0xf4) r5:c5984060 r4:c21cf098 [<c024b6b8>]
(xfs_trans_dup+0x0/0xf4) from [<c0236f44>]
(xfs_itruncate_finish+0x28c/0x368)
r7:00000000 r6:00000000 r5:c5984060 r4:c21cf098 [<c0236cb8>]
(xfs_itruncate_finish+0x0/0x368) from [<c025392c>]
(xfs_setattr+0x8b0/0xde4) [<c025307c>] (xfs_setattr+0x0/0xde4) from
[<c025ffd8>] (xfs_vn_setattr+0x16c/0x18c) [<c025fe6c>]
(xfs_vn_setattr+0x0/0x18c) from [<c016b5bc>] (notify_change+0x124/0x244)
r7:c5b26758 r6:00000068 r5:c5985078 r4:c7d9b8f0 [<c016b498>]
(notify_change+0x0/0x244) from [<c01c9180>] (nfsd_setattr+0x368/0x50c)
[<c01c8e18>] (nfsd_setattr+0x0/0x50c) from [<c01cfdc4>]
(nfsd3_proc_setattr+0xa0/0xc4) [<c01cfd24>]
(nfsd3_proc_setattr+0x0/0xc4) from [<c01c452c>]
(nfsd_dispatch+0xd8/0x1e0) r7:c2b3a000 r6:c03db9a4 r5:00000018
r4:c62ad000 [<c01c4454>] (nfsd_dispatch+0x0/0x1e0) from [<c03b2ecc>]
(svc_process+0x448/0x7e8)
r8:c03db944 r7:00000014 r6:c62ad000 r5:c2b3a000 r4:c03db9a4
[<c03b2a84>] (svc_process+0x0/0x7e8) from [<c01c4ba4>]
(nfsd+0x17c/0x2d4) [<c01c4a28>] (nfsd+0x0/0x2d4) from [<c011dee4>]
(do_exit+0x0/0x7c4) SysRq : Show Regs
Pid: 1208, comm: nfsd
CPU: 0 Not tainted (2.6.22.7 #7)
PC is at xfs_bunmapi+0x330/0xf38
LR is at __init_begin+0x3fff8000/0x30
pc : [<c02155f8>] lr : [<00000000>] psr: 80000013
sp : c5cb3bc8 ip : c5cb3c50 fp : c5cb3cc4
r10: 00000000 r9 : 00000000 r8 : 00000000
r7 : 00000bff r6 : 000fffff r5 : 00000000 r4 : ffffffff
r3 : 000fffff r2 : fffe0c00 r1 : 00000000 r0 : 00000bef
Flags: Nzcv IRQs on FIQs on Mode SVC_32 Segment user
Control: a005317f Table: 07b38000 DAC: 00000015 [<c00f1b3c>]
(show_regs+0x0/0x50) from [<c02c8278>] (sysrq_handle_showregs+0x20/0x28)
r4:c03e5654
[<c02c8258>] (sysrq_handle_showregs+0x0/0x28) from [<c02c8110>]
(__handle_sysrq+0xa4/0x148) [<c02c806c>] (__handle_sysrq+0x0/0x148) from
[<c02c841c>] (handle_sysrq+0x34/0x40) [<c02c83e8>]
(handle_sysrq+0x0/0x40) from [<c02ccd40>] (receive_chars+0x17c/0x2c4)
[<c02ccbc4>] (receive_chars+0x0/0x2c4) from [<c02cdec8>]
(serial8250_interrupt+0x74/0x13c) [<c02cde54>]
(serial8250_interrupt+0x0/0x13c) from [<c013b804>]
(handle_IRQ_event+0x44/0x84) [<c013b7c0>] (handle_IRQ_event+0x0/0x84)
from [<c013d080>] (handle_level_irq+0xe0/0xfc) r7:00000bff r6:00000000
r5:00000003 r4:c03d8998 [<c013cfa0>] (handle_level_irq+0x0/0xfc) from
[<c0021048>] (asm_do_IRQ+0x48/0x64)
r5:c03d8998 r4:00000003
[<c0021000>] (asm_do_IRQ+0x0/0x64) from [<c003bef0>]
(__irq_svc+0x30/0x100) Exception stack(0xc5cb3b80 to 0xc5cb3bc8)
3b80: 00000bef 00000000 fffe0c00 000fffff ffffffff 00000000 000fffff
00000bff
3ba0: 00000000 00000000 00000000 c5cb3cc4 c5cb3c50 c5cb3bc8 00000000
c02155f8
3bc0: 80000013 ffffffff
r6:00000002 r5:f1020000 r4:ffffffff
[<c02152c8>] (xfs_bunmapi+0x0/0xf38) from [<c0236e9c>]
(xfs_itruncate_finish+0x1e4/0x368)
[<c0236cb8>] (xfs_itruncate_finish+0x0/0x368) from [<c025392c>]
(xfs_setattr+0x8b0/0xde4) [<c025307c>] (xfs_setattr+0x0/0xde4) from
[<c025ffd8>] (xfs_vn_setattr+0x16c/0x18c) [<c025fe6c>]
(xfs_vn_setattr+0x0/0x18c) from [<c016b5bc>] (notify_change+0x124/0x244)
r7:c5b26758 r6:00000068 r5:c5985078 r4:c7d9b8f0 [<c016b498>]
(notify_change+0x0/0x244) from [<c01c9180>] (nfsd_setattr+0x368/0x50c)
[<c01c8e18>] (nfsd_setattr+0x0/0x50c) from [<c01cfdc4>]
(nfsd3_proc_setattr+0xa0/0xc4) [<c01cfd24>]
(nfsd3_proc_setattr+0x0/0xc4) from [<c01c452c>]
(nfsd_dispatch+0xd8/0x1e0) r7:c2b3a000 r6:c03db9a4 r5:00000018
r4:c62ad000 [<c01c4454>] (nfsd_dispatch+0x0/0x1e0) from [<c03b2ecc>]
(svc_process+0x448/0x7e8)
r8:c03db944 r7:00000014 r6:c62ad000 r5:c2b3a000 r4:c03db9a4
[<c03b2a84>] (svc_process+0x0/0x7e8) from [<c01c4ba4>]
(nfsd+0x17c/0x2d4) [<c01c4a28>] (nfsd+0x0/0x2d4) from [<c011dee4>]
(do_exit+0x0/0x7c4) SysRq : Resetting Reseting !!
^ permalink raw reply [flat|nested] 5+ messages in thread* Re: NFSD on XFS with RT subvolume
2008-02-06 14:08 ` Rabeeh Khoury
(?)
@ 2008-02-08 3:27 ` David Chinner
-1 siblings, 0 replies; 5+ messages in thread
From: David Chinner @ 2008-02-08 3:27 UTC (permalink / raw)
To: Rabeeh Khoury; +Cc: nscott, linux-fsdevel, xfs, Lennert Buijtenhek
On Wed, Feb 06, 2008 at 04:08:58PM +0200, Rabeeh Khoury wrote:
> > >
> > > Exporting an XFS volume with kernel NFSD when real-time subvolume is
> > > enabled hangs the kernel.
> > >
> > > I'm using vanilla LK 2.6.22.7; first I create the XFS volume with
> two
> > > partitions of 20GB each with extent size of 1MB; then I create a
> > > subdirectory in the volume and mark it (using xfs_io util) as it
> belongs
> > > to the rt subvolume with inheritance flag.
> > >
> > > After mounting that volume through NFSv3 / UDP; and trying a 'dd
> > > if=/dev/zero of=/mnt/rt/test bs=1M count=1000' the machine running
> NFSD
> > > hangs infinitely.
> >
> > Did you manage to get a stack trace, OOC? No reason why it shouldn't
> > work AFAIK.
>
> I didn't mention that I'm using ARM EABI machine for that; but the same
> scenario happened on Ubuntu Gutsy 7.10.
> The serial console stops responding, but getting Sysrq with showPc
> function working I'v got some stack traces (Look for #stack-trace
> below).
Nothing indicating a hang in the stack traces, just lots of
truncates in progress. If you run the same test on the local machine,
does the system hang? Or does it only hang through NFS.
BTW, having multiple truncates in flight doesn't match up with you
supposed test case above. If all you are doing is a dd, then there
should only be one truncate occurring (on open). Try running with
conv=notrunc and see if that hangs in a similar manner...
> I'm running Fedora-8 on the ARM machine using xfsprogs-2.9.4-4.f8 RPM.
> The output of formatting /dev/sda5 and /dev/sda6 as the rt-subvolume is
> the following, but this time /dev/sda5 is 2GByte and /dev/sda6 is
> 20GByte (look for #mkfs.xfs).
>
> Another note is that sometimes I'm getting an error message that XFS is
> trying to access LBA beyond the volume.
Does xfs_check or xfs_repair -n indicate and corruption on disk?
> Maybe you can suggest few tests that I can perform to figure out what's
> the root cause?
If you don't use a rt device, does the same test hang?
FWIW, if you run the same test on x86 or x86_64, does it hang?
Cheers,
Dave.
--
Dave Chinner
Principal Engineer
SGI Australian Software Group
^ permalink raw reply [flat|nested] 5+ messages in thread