glusterfs.git/xlators/nfs/server/src/mount3.c, branch v3.6.6

nfs: Fixes "Remote I/O error" mount failures

2015-09-06T16:20:25+00:00

- Fixes issue where NFS mount fail with "Remove I/O error" after the
  target directory has been deleted and re-created after the gNFSd has
  already cached the inode of the first generation of the target
  directory.
- The solution is to follow the guidance of the AFR2 comments and
  refresh the inode by deleting it from cache and looking it up
  again.

BUG: 1258069
Change-Id: I9c7d8bd460ee9e5ea0b5b47d23886b1afcdcd563
Reported-by: Richard Wareing 
Signed-off-by: Niels de Vos 
Reviewed-on: http://review.gluster.org/12045
Tested-by: Gluster Build System 
Reviewed-by: Raghavendra Bhat

nfs: make it possible to disable nfs.mount-rmtab

2015-08-18T13:19:48+00:00

When there are many NFS-clients doing very often mount/unmount actions,
the updating of the 'rmtab' can become a bottleneck and cause delays. In
these situations, the output of 'showmount' may be less important than
the responsiveness of the (un)mounting.

By setting 'nfs.mount-rmtab' to the value "/-", the cache file is not
updated anymore, and the entries are only kept in memory.

Cherry picked from commit 40407afb529f6e5fa2f79e9778c2f527122d75eb:
> Cherry picked from commit 331ef6e1a86bfc0a93f8a9dec6ad35c417873849:
>> BUG: 1169317
>> Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d
>> Reported-by: Cyril Peponnet 
>> Signed-off-by: Niels de Vos 
>> Reviewed-on: http://review.gluster.org/9223
>> Tested-by: Gluster Build System 
>> Reviewed-by: soumya k 
>> Reviewed-by: jiffin tony Thottan 
>> Reviewed-by: Kaleb KEITHLEY 
>
> This change also contains the fixes to the test-case from:
>>
>> nfs: fix spurious failure in bug-1166862.t
>>
>> In some environments, "showmount" could return an NFS-client that does
>> not start with "1". This would cause the test-case to fail. The check is
>> incorrect, the number of lines should get counted instead.
>>
>> Also moving the test-case to the .../nfs/... subdirectory.
>>
>> Cherry picked from commit ee9b35a780607daddc2832b9af5ed6bf414aebc0:
>> BUG: 1166862
>> Change-Id: Ic03aa8145ca57d78aea01564466e924b03bb302a
>> Signed-off-by: Niels de Vos 
>> Reviewed-on: http://review.gluster.org/10419
>> Tested-by: Gluster Build System 
>> Reviewed-by: Vijay Bellur 
>>
>
> Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d
> BUG: 1215385
> Signed-off-by: Niels de Vos 
> Reviewed-on: http://review.gluster.org/10379
> Tested-by: NetBSD Build System
> Tested-by: Gluster Build System 
> Reviewed-by: Vijay Bellur 

Change-Id: I40c4d8d754932f86fb2b1b2588843390464c773d
BUG: 1234096
Signed-off-by: Niels de Vos 
Reviewed-on: http://review.gluster.org/11335
Tested-by: Gluster Build System 
Reviewed-by: Raghavendra Bhat

nfs: prevent assertion error with MOUNT over UDP

2014-07-07T17:28:47+00:00

The MOUNT service over UDP runs in a separate thread. This thread does
not have the correct *THIS xlator set. *THIS points to the global (base)
xlator structure, but GF_CALLOC() requires it to be the NFS-xlator so
that assertions can get validated correctly.

This is solved by passing the NFS-xlator to the pthread function, and
setting the *THIS pointer explicitly in the new thread.

It seems that on occasion (needs further investigation) MOUNT over UDP
does not unregister itself. There can also be issues when the kernel NLM
implementation has been registered at portmap/rpcbind, so adding some
unregister procedures in the cleanup of the test-cases.

Change-Id: I3be5a420fc800bbcc14198d0b6faf4cf2c7300b1
BUG: 1116503
Signed-off-by: Niels de Vos 
Reviewed-on: http://review.gluster.org/8241
Reviewed-by: Santosh Pradhan 
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

gNFS: Fix multi-homed m/c issue in NFS subdir auth

2014-06-25T07:41:52+00:00

NFS subdir authentication doesn't correctly handle multi-homed
(host with multiple NIC having multiple IP addr) OR multi-protocol
(IPv4 and IPv6) network addresses.

When user/admin sets HOSTNAME in gluster CLI for NFS subdir auth,
mnt3_verify_auth() routine does not iterate over all the resolved
n/w addrs returned by getaddrinfo() n/w API. Instead, it just tests
with the one returned first.

1. Iterate over all the n/w addrs (linked list) returned by getaddrinfo().
2. Move the n/w mask calculation part to mnt3_export_fill_hostspec()
   instead of doing it in mnt3_verify_auth() i.e. calculating for each
   mount request. It does not change for MOUNT req.
3. Integrate "subnet support code rpc-auth.addr..allow"
   and "NFS subdir auth code" to remove code duplication.

Change-Id: I26b0def52c22cda35ca11766afca3df5fd4360bf
BUG: 1102293
Signed-off-by: Santosh Kumar Pradhan 
Reviewed-on: http://review.gluster.org/8048
Reviewed-by: Rajesh Joseph 
Tested-by: Gluster Build System 
Reviewed-by: Niels de Vos

mgmt/gluster: Use fsync instead of O_SYNC

2014-05-05T20:52:51+00:00

Glusterd uses O_SYNC to write to temp file then performs renames
to the actual file and performs fsync on parent directory. Until
this rename happens syncing writes to the file can be deferred.
In this patch O_SYNC open of temp file is removed and fsync of the
fd before rename is done.

Change-Id: Ie7da161b0daec845c7dcfab4154cc45c2f49d825
BUG: 908277
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/7370
Reviewed-by: Krishnan Parthasarathi 
Reviewed-by: Raghavendra Bhat 
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

nfs/server: Logic error in mount tab handling.

2014-01-25T07:56:28+00:00

This error likely causes a double free and also a memory leak.

Change-Id: I299209a8b5bf8aaf487e52e9a4f00948e1d40eb5
CID: 1124703
BUG: 789278
Signed-off-by: Ira Cooper 
Reviewed-on: http://review.gluster.org/6778
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati

gNFS: mnt3_find_export() by pass AUTH check

2014-01-08T11:54:06+00:00

NFS subdir mount does not respect nfs.rpc-auth-reject option
in the volume. If the volume is being mounted, then it would
validate the AUTH by mnt3_check_client_net() but if the client
is mounting a subdir, the control takes a different code path
i.e. mnt3_find_export() which does not bother about the AUTH.

FIX:
Enforce the AUTH check in mnt3_parse_dir_exports() which is
invoked by mnt3_find_export() for subdir mount.

Change-Id: I6fdd3e6bd6cbd32b0d9ca620cc4c30fdaff9ca30
BUG: 1049225
Signed-off-by: Santosh Kumar Pradhan 
Reviewed-on: http://review.gluster.org/6655
Reviewed-by: Niels de Vos 
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

gNFS: RFE for NFS connection behavior

2013-11-15T00:07:02+00:00

Implement reconfigure() for NFS xlator so that volume set/reset wont
restart the NFS server process. But few options can not be reconfigured
dynamically e.g. nfs.mem-factor, nfs.port etc which needs NFS to be
restarted.

Change-Id: Ic586fd55b7933c0a3175708d8c41ed0475d74a1c
BUG: 1027409
Signed-off-by: Santosh Kumar Pradhan 
Reviewed-on: http://review.gluster.org/6236
Tested-by: Gluster Build System 
Reviewed-by: Rajesh Joseph 
Reviewed-by: Anand Avati

dual license: update remaining files with correct license text

2013-10-24T14:58:19+00:00

Sayan Saha has previously approved changing everthing to dual license
but somehow we have missed changing these files.

I am explicitly not updating the copyright dates as nothing else that's
copyrightable has changed in these files with the license change

Change-Id: Ia965eeb7168447d69e28e939ad95ee388873b6e4
BUG: 951549
Signed-off-by: Kaleb S. KEITHLEY 
Reviewed-on: http://review.gluster.org/6128
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

NFS: showmount timesout on fetching export list

2013-10-05T03:15:41+00:00

Bug: 1015184

Issue:  showmount timesout on fetching export list. Socket writev
        function is failing.
Cause:  XDR encoding of export list is failing. The calling function
        without checking the error returned by xdr_serialize_exports
        function is going ahead and writting into the socket causing
        the NFS process to hang. xdr_serialize_exports function returns
        -1 on error and message length on success.
Fix:    Caller should check if the function is returning -1 (error) or
        not before proceeding.

Change-Id: Ic3a5a9356e47b2ac938dd3e429cf2b71c0a0c715
Signed-off-by: Rajesh Joseph 
Reviewed-on: http://review.gluster.org/6030
Reviewed-by: Santosh Pradhan 
Reviewed-by: Niels de Vos 
Tested-by: Gluster Build System 
Reviewed-by: Anand Avati