[Lustre-discuss] exporting lustre subdirectory via nfs

[Aaron Knister]

Hi,
I have found that when I mount via nfs a subdirectory of a lustre
file system I get the message posted below (plus it doesnt work).

Example-

/disk/data

/disk is the lustre file system and /disk/data is the directory I
want to export. I can export /disk just fine but I really only want
to export /disk/data for some security reasons.

Message found in /var/log/messages--

LustreError: 4539:0:(ldlm_lock.c:82:ldlm_it2str()) Unknown intent
-2145573515
LustreError: 4539:0:(dcache.c:290:ll_frob_intent()) ASSERTION(it-
>it_magic == INTENT_MAGIC) failed:bad intent magic: 802db80
LustreError: 4539:0:(dcache.c:290:ll_frob_intent()) LBUG
Lustre: 4539:0:(linux-debug.c:156:libcfs_debug_dumpstack()) showing
stack for process 4539
rpc.mountd R running task 0 4539 1 4612
4535 (NOTLB)
000001000117a030 ffffffff801d037b 0000000045a25af1 000000000b6bd680
000000d272cf7110 0000000000000246 0000000000000256
0000010000013780
0000000000000000 00000000000000d2
Call Trace:<ffffffff801d037b>{inode_has_perm+89} <ffffffff801cf5b4>
{avc_has_perm+70}
<ffffffff801d2575>{selinux_file_permission+298}
<ffffffffa0149a5d>{:sunrpc:cache_write+186}
<ffffffff80177424>{vfs_write+207} <ffffffff8017750c>{sys_write
+69}
<ffffffff8011026a>{system_call+126}
LustreError: dumping log to /tmp/lustre-log-crew01.iges.org.
1168268017.4539
Lustre: 4539:0:(linux-debug.c:96:libcfs_run_upcall()) Invoked LNET
upcall /usr/lib/lustre/lnet_upcall LBUG,/testsuite/tmp/lbuild-boulder/
lbuild-v1_4_7_3-2.6-rhel4-x86_64/lbuild/BUILD/lustre-1.4.7.3/lustre/
llite/dcache.c,ll_frob_intent,290

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[Alexey Lyashkov]

Hi Aaron,

this bug fixed already in bug #10935, but if you want to reexport lustre
mount in nfs you want apply also fixes from bug #10796.
If bug still exist after apply both patchess, please write to list or
fill bugzilla bug.

--
Alexey Lyashkov <sha...@clusterfs.com>
Beaver team