I have a nfs server running XFS. I have problems with 2.4.19+xfs 1.2pre
kernels. Nfsd processes are getting stuck at state D.
I have kdb and got a back trace of one the stuck nfsd processes.
System : RH 7.1
NFS-Utils : Was Red Hat original , upgraded to 1.0.1 the same happens.
Using LVM and qlogic 2100 HBA. XFS volumes are accessible through HBA..
First NFSD got stuck at D state
----------------------------------------
[root@lnxsrv2 /root]# ps -eo pid,stat,args,wchan | grep nfs
1237 SW [nfsd] svc_recv
1238 SW [nfsd] svc_recv
1239 SW [nfsd] svc_recv
1240 SW [nfsd] svc_recv
1241 SW [nfsd] svc_recv
1242 SW [nfsd] svc_recv
1243 SW [nfsd] svc_recv
1244 SW [nfsd] svc_recv
1245 SW [nfsd] svc_recv
1246 SW [nfsd] svc_recv
1247 SW [nfsd] svc_recv
1248 SW [nfsd] svc_recv
1249 SW [nfsd] svc_recv
1250 SW [nfsd] svc_recv
1251 SW [nfsd] svc_recv
1252 DW [nfsd] down
2321 S grep nfs pipe_wait
ALL NFSD processes got stuck at D state
----------------------------------------------------
[root@lnxsrv2 /root]# ps -eo pid,stat,args,wchan | grep nfs
1237 DW [nfsd] exp_readlock
1238 DW [nfsd] exp_readlock
1239 DW [nfsd] exp_readlock
1240 DW [nfsd] exp_readlock
1241 DW [nfsd] exp_readlock
1242 DW [nfsd] exp_readlock
1243 DW [nfsd] exp_readlock
1244 DW [nfsd] exp_readlock
1245 DW [nfsd] exp_readlock
1246 DW [nfsd] exp_readlock
1247 DW [nfsd] exp_readlock
1248 DW [nfsd] exp_readlock
1249 DW [nfsd] exp_readlock
1250 DW [nfsd] exp_readlock
1251 DW [nfsd] exp_readlock
1252 DW [nfsd] down
3072 S grep nfs pipe_wait
KDB back trace
------------------------------------
0xc6d11b1c 0xc0107826 __down+0x68
kernel .text 0xc0100000 0xc0107710 0xc0107890
0xc6d11b38 0xc01079d4 __down_failed+0x8 (0xc71acecc, 0xc01fc0c2, 0xc71acec0,
0x15, 0x400)
kernel .text 0xc0100000 0xc01079cc 0xc01079d8
0xc6d11b48 0xc01fe453 .text.lock.page_buf_locking+0xf
kernel .text 0xc0100000 0xc01fe444 0xc01fe460
0xc6d11b48 0xc01fe2e9 pagebuf_lock+0x39 (0xc71acec0, 0x15, 0x400, 0x1)
kernel .text 0xc0100000 0xc01fe2b0 0xc01fe2f0
0xc6d11b50 0xc01fc0c2 _pagebuf_find+0x192 (0xc12cf3c0, 0x800002, 0x0, 0x200,
0x22205)
kernel .text 0xc0100000 0xc01fbf30 0xc01fc110
0xc6d11b74 0xc01fc1a8 pagebuf_get+0x68 (0xc12cf3c0, 0x800002, 0x0, 0x1, 0x22205)
kernel .text 0xc0100000 0xc01fc140 0xc01fc260
0xc6d11ba4 0xc01f1ffb xfs_trans_read_buf+0x1eb (0xc84ed400, 0xc2c60b68,
0xc12cf3c0, 0x800002, 0x0)
kernel .text 0xc0100000 0xc01f1e10 0xc01f2140
0xc6d11bcc 0xc01db0d3 xfs_ialloc_read_agi+0x43 (0xc84ed400, 0xc2c60b68, 0x1,
0xc6d11c2c, 0xc6d11c2c)
kernel .text 0xc0100000 0xc01db090 0xc01db160
0xc6d11c04 0xc01d9f32 xfs_ialloc_ag_select+0x232 (0xc2c60b68, 0x111d8ee, 0x0,
0xc1ed, 0x1)
kernel .text 0xc0100000 0xc01d9d00 0xc01d9fc0
0xc6d11c44 0xc01da01c xfs_dialloc+0x5c (0xc2c60b68, 0x111d8ee, 0x0, 0xc1ed, 0x1)
kernel .text 0xc0100000 0xc01f3100 0xc01f3380
0xc6d11db4 0xc01f7540 xfs_create+0x2c0 (0xc4e1d828, 0xce15fc60, 0xc6d11e5c,
0xc6d11e58, 0x0)
kernel .text 0xc0100000 0xc01f7280 0xc01f7790
0xc6d11e40 0xc0201eca linvfs_mknod+0x11a (0xc5253a80, 0xce15fc60, 0xc1ed, 0x0,
0x0)
kernel .text 0xc0100000 0xc0201db0 0xc0202020
0xc6d11ee0 0xc0145fb1 vfs_mknod+0x161 (0xc5253a80, 0xce15fc60, 0xc1ed, 0x0,
0xc5253a80)
kernel .text 0xc0100000 0xc0145e50 0xc0146010
0xc6d11f04 0xc01916aa nfsd_create+0x2ca (0xc6d1fe00, 0xc6d1fa04, 0xc0536ca0,
0x6, 0xc6d1fca4)
kernel .text 0xc0100000 0xc01913e0 0xc0191740
0xc6d11f30 0xc019696e nfsd3_proc_mknod+0x18e (0xc6d1fe00, 0xc6d0c014, 0x0,
0x49, 0xb)
kernel .text 0xc0100000 0xc01967e0 0xc0196980
0xc6d11f88 0xc0297c16 svc_process+0x2a6 (0xcfdaf560, 0xc6d1fe00, 0xc6d10674,
0xcfdaf560, 0xc6d13fd0)
kernel .text 0xc0100000 0xc0297970 0xc0297e80
0xc6d11fc0 0xc018d2db nfsd+0x1fb
kernel .text 0xc0100000 0xc018d0e0 0xc018d410
0xc6d11ff4 0xc0107296 kernel_thread+0x26
kernel .text 0xc0100000 0xc0107270 0xc01072a0
--
Şeref Tufan Şen
İTÜ-BİDB
Sistem Destek Grubu
|