[Linux-cachefs] [UPDATE] [Q]: NFS + CacheFS hangs.....
Chris Bshaw
cwbshaw at hotmail.com
Tue Jun 7 11:32:28 UTC 2005
Hi....
Since my last posting, I have reloaded my machine with FC3 + all the latest
YUM updates, and I have
built the latest 2.6.12-rc5-mm2 + NFS CacheFS patches. However, I am still
having the same problem. I
have attached the process backtrace below.....to my untrained eyes, it looks
the same as the ones in my
previous posts.
I also tried using NFS + CacheFS using a loopback filesystem. I got further
with this....I was able to
mount my NFS filesystem and cd into the filesystem tree. I was even able to
'cat' a few small files, but
when I tried to transfer a large file the kernel itself crashed.....I have
attached the output from this below
also.
I am really interested in trying to use this and am happy to help get this
to work for the benefit of
everyone, although I am not a kernel programmer so I am not sure how much I
can help except to
provide feedback from testing.
Could anyone recommend a Linux distribution on which they have gotten this
to work?
Has anyone got this to work on FC2 or FC3?
Finally, I have attached my kernel .config in case there is something I did
wrong when building the
kernel.
I'd be really grateful for any help or suggestions on what to try next.
Chris.
Process Backtrace (Cachefs mounted on scsi disk)
---------------------------------------------------------------------
kcachefsd 081 S 00000020 6876 3262 1 2627 (L-TLB)
f10e7ee4 00000046 f10e7ed4 00000020 00000002 00000000 f19fdd38 00000286
c036b262 00000833 00000000 c1796b40 f2046980 f891b8a0 f7fff080
c1808560
00000000 00000000 26af7400 003d0901 c03afc00 f7e6aa70 f7e6ab98
f10e7f34
Call Trace
[<f891b8a0>] __fscache_page_get_private+0x39/0x6a [fscache]
[<f88d6999>] cachefs_trans_mark+0x460/0x5eb [cachefs]
[<f88d1446>] cachefs_block_read+0x145/0x441 [cachefs]
[<f88d1058>] cachefs_block_dummy_filler+0x0/0x76 [cachefs]
[<c011908d>] default_wake_function+0x0/0x12
[<c011908d>] default_wake_function+0x0/0x12
[<f88d618b>] cachefs_trans_alloc+0x67/0xc3 [cachefs]
[<f88d9759>] cachefs_recycle_begin_new_node+0xe9/0x371 [cachefs]
[<f88d9bd5>] cachefs_recycle_unready_blocks+0x1f4/0x239 [cachefs]
[<f88d8bd8>] kcachefsd_work+0x7c/0xfc [cachefs]
[<f88d8cda>] kcachefsd+0x82/0x98 [cachefs]
[<f88d8c58>] kcachefsd+0x0/0x98 [cachefs]
[<c01010a1>] kernel_thread_helper+0x5/0xb
mount D 00000020 6140 3301 3100 (NOTLB)
ee9dd9dc 00000086 ee9dd9cc 00000020 00000002 f7cb9500 00000000 00000001
00000206 00000000 00000000 00000001 f7895220 f67fbc80 f67cbb80
c1808560
00000000 00000000 a55cdf00 003d090a c03afc00 f7fef030 f7fef158
f7895000
Call Trace
[<c0350a1f>] __down+0x73/0x100
[<c011908d>] default_wake_function+0x0/0x12
[<c0350beb>] __down_failed+0x7/0xc
[<f88d87ac>] .text.lock.journal+0x19/0x19d [cachefs]
[<c011908d>] default_wake_function+0x0/0x12
[<f88d420e>] cachefs_indr_io_get_block_alloc+0x4a2/0xbef [cachefs]
[<c01495fa>] cache_init_objs+0x59/0x81
[<c011908d>] default_wake_function+0x0/0x12
[<c011908d>] default_wake_function+0x0/0x12
[<f88d618b>] cachefs_trans_alloc+0x67/0xc3 [cachefs]
[<f88d4c3c>] cachefs_indr_io_get_block+0x2e1/0x65f [cachefs]
[<c01efc3c>] radix_tree_node_alloc+0x1c/0x5c
[<f88d29b1>] cachefs_index_select_free_entry+0x2c4/0x3ca [cachefs]
[<c01457aa>] buffered_rmqueue+0x115/0x259
[<f88d2b08>] cachefs_index_add+0x51/0x786 [cachefs]
[<c01495fa>] cache_init_objs+0x59/0x81
[<f891ab75>] fscache_instantiate_object+0xe9/0x243 [fscache]
[<f891ab1c>] fscache_instantiate_object+0x90/0x243 [fscache]
[<f891ab1c>] fscache_instantiate_object+0x90/0x243 [fscache]
[<f891ae86>] __fscache_acquire_cookie+0x1a2/0x237 [fscache]
[<f8b9b499>] nfs_find_actor+0x0/0x7b [nfs]
[<f8b9b775>] nfs_fhget+0x215/0x3ed [nfs]
[<f8b9b514>] nfs_init_locked+0x0/0x4c [nfs]
[<f8b9a556>] nfs_get_root+0x42/0x81 [nfs]
[<f8b9a62f>] nfs_sb_init+0x9a/0x57a [nfs]
[<f891a7ea>] fscache_search_for_object+0xc9/0x36b [fscache]
[<f8b9af80>] nfs_fill_super+0x345/0x3f3 [nfs]
[<f8b9d2f3>] nfs_get_sb+0x29d/0x31e [nfs]
[<c01690d2>] do_kern_mount+0xa2/0x152
[<c017fb31>] do_new_mount+0x73/0xb3
[<c0180277>] do_mount+0x1c3/0x1c8
[<c0180069>] copy_mount_options+0x54/0x9f
[<c0352d37>] lock_kernel+0x2a/0x3c
[<c01806d7>] sys_mount+0x9f/0xd7
[<c0102c3b>] sysenter_past_esp+0x54/0x75
Kernel crash (Cachefs mounted on loopback filesystem)
----------------------------------------------------------------------------
------------[ cut here ]------------
kernel BUG at fs/cachefs/journal.c:1511!
invalid operand: 0000 [#1]
SMP
Modules linked in: nfs lockd nfs_acl sunrpc cachefs fscache loop md5 ipv6
dm_mod video button battery ac ohci_hcd i2c_piix4 i2c_core tg3 floppy
CPU: 1
EIP: 0060:[<f88de324>] Not tainted VLI
EFLAGS: 00010046 (2.6.12-rc5-mm2)
EIP is at cachefs_trans_batch_written+0x116/0x123 [cachefs]
eax: c17b70ec ebx: f65c2a00 ecx: c17ac960 edx: 00000000
esi: c1b31cd4 edi: f7b451d0 ebp: 00000007 esp: c1a37fa8
ds: 007b es: 007b ss: 0068
Process loop0 (pid: 3205, threadinfo=c1a36000 task=f7c21a70)
Stack: f88f6a03 f7b451c0 00000282 f7b45000 ed6b7700 f7f0e000 00000008
f7f0e0ec
f88f6c79 ed6b7700 0001f000 00000000 f88f6b91 00000000 00000000
00000000
c01010a1 f7f0e000 00000000 00000000 00000000 00000000
Call Trace:
[<f88f6a03>] do_bio_filebacked+0x6c/0x72 [loop]
[<f88f6c79>] loop_thread+0xe8/0x133 [loop]
[<f88f6b91>] loop_thread+0x0/0x133 [loop]
[<c01010a1>] kernel_thread_helper+0x5/0xb
Code: 24 24 89 04 24 e8 21 8a 88 c7 31 c0 83 c4 10 5b 5e 5f 5d c3 0f 0b e9
05 07 9c 8e f8 eb 8f 0f 0b 2d 01 3a 9c 8e f8 e9 7c ff ff ff <0f> 0b e7 05 07
9c 8e f8 e9 68 ff ff ff 53 b8 01 00 00 00 83 ec
<3>BUG: soft lockup detected on CPU#0!
Jun 7 11:57:42 itt-vsrs-7 kernel:
Pid: 3234, comm: kcachefsd 0700
EIP: 0060:[<c035298e>] CPU: 0
EIP is at _spin_lock_irqsave+0x23/0x51
EFLAGS: 00000286 Not tainted (2.6.12-rc5-mm2)
EAX: f7b451c0 EBX: 00000282 ECX: 00000000 EDX: f7b45000
ESI: f7b451c0 EDI: f643bf5c EBP: f7b451d8 DS: 007b ES: 007b
CR0: 8005003b CR2: 002b2440 CR3: 37e83de0 CR4: 000006f0
[<c0272f23>] submit_bio+0x51/0xe2
[<f88ddfe1>] cachefs_trans_batch_process_written_blocks+0xa1/0x2ce [cachefs]
[<c011908d>] default_wake_function+0x0/0x12
[<f88dd8f5>] cachefs_trans_batch_write_data+0x54/0x225 [cachefs]
[<c011908d>] default_wake_function+0x0/0x12
[<f88dd372>] cachefs_trans_batch_write+0x290/0x4a2 [cachefs]
[<f88decda>] kcachefsd+0x82/0x98 [cachefs]
[<f88dec58>] kcachefsd+0x0/0x98 [cachefs]
[<c01010a1>] kernel_thread_helper+0x5/0xb
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