Hi,
A very short time (<100M) after reading from data stored in a fscache'd nfs
(nfs3 or nfs4, doesn't matter), the cache gets disabled with something like:
+++
Jun 6 18:59:58 syydelaervli kernel: [ 1107.260445] Pid: 2104, comm: kslowd Not
tainted 2.6.30-rc8-686 #1
Jun 6 18:59:59 syydelaervli kernel: [ 1107.260535] Call Trace:
Jun 6 18:59:59 syydelaervli kernel: [ 1107.260656] [<c917c6ee>] ?
cachefiles_read_waiter+0x45/0xc0 [cachefiles]
Jun 6 18:59:59 syydelaervli kernel: [ 1107.260762] [<c011bce5>] ?
__wake_up_common+0x34/0x59
Jun 6 18:59:59 syydelaervli kernel: [ 1107.260849] [<c011c5af>] ?
__wake_up+0x29/0x39
Jun 6 18:59:59 syydelaervli kernel: [ 1107.260941] [<c0136869>] ?
__wake_up_bit+0x29/0x2e
Jun 6 18:59:59 syydelaervli kernel: [ 1107.261151] [<c8abde27>] ?
ext3_truncate+0x365/0x710 [ext3]
Jun 6 18:59:59 syydelaervli kernel: [ 1107.261262] [<c017b13b>] ?
vmtruncate+0xf6/0x119
Jun 6 18:59:59 syydelaervli kernel: [ 1107.261343] [<c019c011>] ?
inode_setattr+0x4b/0x11b
Jun 6 18:59:59 syydelaervli kernel: [ 1107.261496] [<c8abbccd>] ?
ext3_setattr+0x156/0x1ab [ext3]
Jun 6 18:59:59 syydelaervli kernel: [ 1107.261583] [<c019c233>] ?
notify_change+0x152/0x28f
Jun 6 18:59:59 syydelaervli kernel: [ 1107.261674] [<c01a8000>] ?
block_read_full_page+0x233/0x270
Jun 6 18:59:59 syydelaervli kernel: [ 1107.261778] [<c917a2bc>] ?
cachefiles_attr_changed+0xfb/0x156 [cachefiles]
Jun 6 18:59:59 syydelaervli kernel: [ 1107.261933] [<c8ff6f6c>] ?
fscache_lookup_object+0xe2/0xf4 [fscache]
Jun 6 18:59:59 syydelaervli kernel: [ 1107.262052] [<c8ff7357>] ?
fscache_object_slow_work_execute+0x187/0x567 [fscache]
Jun 6 18:59:59 syydelaervli kernel: [ 1107.262160] [<c0169f55>] ?
slow_work_thread+0x264/0x3f3
Jun 6 18:59:59 syydelaervli kernel: [ 1107.262248] [<c01368ca>] ?
autoremove_wake_function+0x0/0x2d
Jun 6 18:59:59 syydelaervli kernel: [ 1107.262331] [<c0169cf1>] ?
slow_work_thread+0x0/0x3f3
Jun 6 18:59:59 syydelaervli kernel: [ 1107.262412] [<c01365dc>] ?
kthread+0x42/0x67
Jun 6 18:59:59 syydelaervli kernel: [ 1107.262490] [<c013659a>] ?
kthread+0x0/0x67
Jun 6 18:59:59 syydelaervli kernel: [ 1107.262584] [<c0103ab7>] ?
kernel_thread_helper+0x7/0x10
Jun 6 18:59:59 syydelaervli kernel: [ 1107.262777] CacheFiles: I/O Error:
Readpage failed on backing file 40000830
Jun 6 18:59:59 syydelaervli kernel: [ 1107.262862] FS-Cache: Cache cachefiles
stopped due to I/O error
+++
(currently 2.6.30-rc8 686 Debian kernel image; cachefilesd 0.9-2; cache
storage is a local PATA drive. Not much other system activity.)
What may be strange is that I'm nfs-mounting from localhost, the exported
drive is an USB disk (... and this computer only has USB 1, so I'm trying to
accelerate this a bit. 750G drive on USB 1 for backup is not much fun. If
fsc only accelerates the read dirvish should already run much faster ... and
if fsc would run with enabled write caching ...)
Just tell me if you need other data. (I'm not on the list!)
cheers
-- vbi
--
It was a trojan now it was identified that it was that machine the trojan
was not identified but it was identified as being that machine.
-- Jamie the spammer, 10/29/2003
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