[Gluster-devel] NFS reexport still a little glitchy

[Brent A Nelson]

I've been testing NFS reexport with cp -pr (from a Sun) of a /usr 
directory from GlusterFS to GlusterFS.  So far, it's been close, but not 
quite right.  The copies never turn out the same, there's always at least 
some missing files.  The cp reports "cannot access" for a lot of items. 
GlusterFS logs a ton of op_ret=-1 op_errno=61 errors such as the 
following:

2007-07-25 14:36:43 E [afr.c:1234:afr_selfheal_getxattr_cbk] mirror2: 
(path=/nfs2/share/zoneinfo/right/Pacific/Johnston child=share2-1) 
op_ret=-1 op_errno=61
2007-07-25 14:36:43 E [afr.c:1234:afr_selfheal_getxattr_cbk] ns0: 
(path=/nfs2/share/zoneinfo/right/Pacific/Johnston child=ns0-0) op_ret=-1 
op_errno=61
2007-07-25 14:36:43 E [afr.c:1234:afr_selfheal_getxattr_cbk] ns0: 
(path=/nfs2/share/zoneinfo/right/Pacific/Johnston child=ns0-1) op_ret=-1 
op_errno=61

In my tests from today's TLA repository, nfsd is eventually even hanging 
(this wasn't occurring in earlier patch releases).  Following that, I did 
an ls from the GlusterFS reexport machine of one of the areas that the NFS 
client recently complained about and got a similar error, but in a 
different function:

2007-07-25 15:51:10 E [afr.c:563:afr_getxattr_cbk] mirror4: 
(path=/usr/share/dict child=share4-0) op_ret=-1 op_errno=61
2007-07-25 15:51:10 E [afr.c:563:afr_getxattr_cbk] mirror4: 
(path=/usr/share child=share4-0) op_ret=-1 op_errno=61

I'm hoping the errors provide some clue to the NFS glitches (and 
presumably pins the issue down to AFR), but perhaps they're harmless. 
Any ideas?

Thanks,

Brent

PS An NFS reexport from an extremely simple (no protocol/*, no unify, no 
AFR; only storage/posix) GlusterFS volume last week seemed fast and 
trouble-free.  If anyone needs NFS reexport and doesn't need AFR, I 
haven't tested it (yet), but it's definitely worth a shot!