glusterfs.git/libglusterfs, branch v3.7dev

glusterd: Improvements to peer identification

2014-07-15T13:59:35+00:00

This patch improves the peer identification mechanism in glusterd and
lays down the framework for further improvements, including better multi
network support in glusterd.

This patch mainly does two things,
1. Extend the peerinfo object to store a list of addresses instead of a
single hostname as it does now. This also includes changes to make the
peer update behaviour of 'peer probe' to add to the list.

2. Improve glusterd_friend_find_by_hostname() to perform better matching
of hostnames. glusterd_friend_find_by_hostname() now does and initial
quick string compare against all the peer addresses known to glusterd,
after which it tries a more thorough search using address resolution and
matching the struc sockaddr's.

The above two changes together improve the peer identification situation
in glusterd a lot.

More information regarding the problem this patch attempts to resolve
and the approach chosen can be found at
http://www.gluster.org/community/documentation/index.php/Features/Better_peer_identification

This commit is a squashed commit of the following changes, the
development branch of which can be viewed at,
https://github.com/kshlm/glusterfs/tree/better-peer-identification or,
https://forge.gluster.org/~kshlm/glusterfs-core/kshlms-glusterfs/commits/better-peer-identification

commit 198f86e60fab74faf082eaa02657a4d8f60b92f0
Author: Kaushal M 
Date:   Tue Jul 15 14:34:06 2014 +0530

    Update gluster.8

commit 35d597f3a6b3248373e727f7b7e889c92554d56c
Author: Kaushal M 
Date:   Tue Jul 15 09:01:01 2014 +0530

    Address review comments

    https://review.gluster.org/#/c/8238/3

commit 47b5331e17304477322bd2daed5bbed503c34ca1
Merge: c71b12c 78128af
Author: Kaushal M 
Date:   Tue Jul 15 08:41:39 2014 +0530

    Merge branch 'master' into better-peer-identification

commit c71b12c164330e8d19d1df4734ab34ef9a8caad2
Merge: 57bc9de 0f5719a
Author: Kaushal M 
Date:   Thu Jul 10 19:50:19 2014 +0530

    Merge branch 'master' into better-peer-identification

commit 57bc9de9e4f49ff2b1620df9906cda50a3527a25
Author: Kaushal M 
Date:   Thu Jul 10 19:49:08 2014 +0530

    More fixes to review comments

commit 5482cc363a687a9e246a0780ec88acd53e218501
Author: Kaushal M 
Date:   Thu Jul 10 18:36:40 2014 +0530

    Code refactoring in peer-utils based on review comments

    https://review.gluster.org/#/c/8238/2/xlators/mgmt/glusterd/src/glusterd-peer-utils.c

commit 89b22c34757178f64d5fbaffa31e6302f841c060
Author: Kaushal M 
Date:   Thu Jul 10 12:30:00 2014 +0530

    Hostnames in peer status

commit 63ebf9485cf50d736cf640238a1ab241671fcaf1
Merge: c8c8fdd f5f9721
Author: Kaushal M 
Date:   Thu Jul 10 12:06:33 2014 +0530

    Merge remote-tracking branch 'origin/master' into better-peer-identification

commit c8c8fdd2104b5b6b8a1af739b1dd952b74e6dd66
Author: Kaushal M 
Date:   Wed Jul 9 18:35:27 2014 +0530

    Hostnames in xml output

commit 732a92a0167ad7b1d70edbc35ebd8307c2766ae1
Author: Kaushal M 
Date:   Wed Jul 9 15:12:10 2014 +0530

    Add hostnames to cli rsp dict during list-friends

commit fcf43e3e317508f0c225024738a988a4af8e9205
Merge: c0e2624 72d96e2
Author: Kaushal M 
Date:   Wed Jul 9 12:53:03 2014 +0530

    Merge branch 'master' into better-peer-identification

commit c0e262416728a3c536a8347a216e471eb2251535
Author: Kaushal M 
Date:   Mon Jul 7 16:11:19 2014 +0530

    Use list_for_each_entry_safe when cleaning peer hostnames

commit 6132e60224eb592f3657e535a12a3e72c772da42
Author: Kaushal M 
Date:   Mon Jul 7 15:52:19 2014 +0530

    Fix crash in gd_add_friend_to_dict

commit 88ffa9a508fd5aac0b2a76e6e76487ce0cab786a
Author: Kaushal M 
Date:   Mon Jul 7 13:19:44 2014 +0530

    gd_peerinfo_destroy -> glusterd_peerinfo_destroy

commit 4b36930a715b1e13cd1a77d136ef1cf78a06d574
Author: Kaushal M 
Date:   Mon Jul 7 12:50:12 2014 +0530

    More refactoring

commit ee559b081d608c6501c10ae22166f26eeb65690e
Author: Kaushal M 
Date:   Mon Jul 7 12:14:40 2014 +0530

    Major refactoring of code based on review comments at
    https://review.gluster.org/#/c/8238/1/xlators/mgmt/glusterd/src/glusterd-peer-utils.h

commit e96dbc7bbb05fad2a9c424de41a394b8023fe48d
Merge: 2613d1d 83c09b7
Author: Kaushal M 
Date:   Mon Jul 7 09:47:05 2014 +0530

    Merge remote-tracking branch 'origin/master' into better-peer-identification

commit 2613d1daebff0c56812de821c06ed4c16bb9d447
Merge: b242cf6 9a50211
Author: Kaushal M 
Date:   Fri Jul 4 15:28:57 2014 +0530

    Merge remote-tracking branch 'origin/master' into better-peer-identification

commit b242cf66d95dd3dd5e3975aa430baa6bd74b8a29
Author: Kaushal M 
Date:   Fri Jul 4 15:08:18 2014 +0530

    Fix a silly mistake, if (ctx->req) => if (ctx->req == NULL)

commit c835ed26433830ceed57289143f596cf60421558
Author: Kaushal M 
Date:   Fri Jul 4 14:58:23 2014 +0530

    Fix reverse probe.

commit 9ede17f9329b854b02e8ad159f173244789fd08c
Author: Kaushal M 
Date:   Fri Jul 4 13:31:32 2014 +0530

    Fix friend import for existing peers

commit 891bf74c7350064dfb008d1b7294bcec28d680fd
Author: Kaushal M 
Date:   Fri Jul 4 13:08:36 2014 +0530

    Set first hostname in peerinfo->hostnames to peerinfo->hostname

commit 9421d6a217381a7427a7d84f369280883ca4297a
Author: Kaushal M 
Date:   Fri Jul 4 12:21:40 2014 +0530

    Fix gf_asprintf return val check in glusterd_store_peer_write

commit defac978c1d94011ce8195e311839b9ffce057e7
Author: Kaushal M 
Date:   Fri Jul 4 11:16:13 2014 +0530

    Fix store_retrieve_peers to correctly cleanup.

commit 00a799f5de1121b0cb7421da8285f9407063e1bd
Author: Kaushal M 
Date:   Fri Jul 4 10:52:11 2014 +0530

    Update address list in glusterd_probe_cbk only when needed.

commit 7a628e8a9c562d85709c69cfa13fb1774c521b75
Merge: d191985 dc46d5e
Author: Kaushal M 
Date:   Fri Jul 4 09:24:12 2014 +0530

    Merge remote-tracking branch 'origin/master' into better-peer-identification

commit d1919858e6639d2b54d716a61f662d9752ec5ff1
Author: Kaushal M 
Date:   Tue Jul 1 18:59:49 2014 +0530

    gf_compare_addrinfo -> gf_compare_sockaddr

commit 31d8ef730d408f8d9ba8f504fa648f7dcd59da87
Merge: 93bbede 86ee233
Author: Kaushal M 
Date:   Tue Jul 1 18:16:13 2014 +0530

    Merge remote-tracking branch 'origin/master' into better-peer-identification

commit 93bbedeac5181e29f59b2acd08f638146812ec41
Author: Kaushal M 
Date:   Tue Jul 1 18:15:16 2014 +0530

    Improve glusterd_friend_find_by_hostname

    glusterd_friend_find_by_hostname will now do an initial quick search for
    the peerinfo performing string comparisions on the given host string. It
    follows it with a more thorough match, by resolving the addresses and
    comparing addrinfos instead of strings.

commit 2542cdbc45aa9cfcaf1f174686158d5565cdd07b
Author: Kaushal M 
Date:   Tue Jul 1 17:21:10 2014 +0530

    New utility gf_compare_addrinfo

commit 338676e8389a44bd91136eebd110197429c2566c
Author: Kaushal M 
Date:   Tue Jul 1 14:55:56 2014 +0530

    Use gd_peer_has_address instead of strcmp

commit 28d45be51f594328741c44455bd80ac9d64ca501
Merge: 728266e 991dd5e
Author: Kaushal M 
Date:   Tue Jul 1 14:54:40 2014 +0530

    Merge branch 'master' into better-peer-identification

commit 728266eb16d5f5a4bf36266044425ae164337f99
Merge: 7d9b87b 2417de9
Author: Kaushal M 
Date:   Tue Jul 1 09:55:13 2014 +0530

    Merge remote-tracking branch 'origin/master' into better-peer-identification

commit 7d9b87b84955ec17daeaf88a3e7462914039430f
Merge: b890625 e02275c
Author: Kaushal M 
Date:   Tue Jul 1 08:41:40 2014 +0530

    Merge pull request #4 from vpshastry/better-peer-identification

    Better peer identification

commit e02275c52fb83c72ad082c098fd3e432c2b9c526
Merge: 75ee90d b890625
Author: Varun Shastry 
Date:   Mon Jun 30 16:44:29 2014 +0530

    Merge branch 'better-peer-identification' of https://github.com/kshlm/glusterfs into better-peer-identification-kaushal-github

commit 75ee90d2f272e49b94d24c9ca4571e89a83055ff
Author: Varun Shastry 
Date:   Mon Jun 30 15:36:10 2014 +0530

    glusterd: add to the list if the probed uuid pre-exists

    Signed-off-by: Varun Shastry 

commit b890625d8164c660695daef3285c67979eef723e
Merge: 04c5d60 187a7a9
Author: Kaushal M 
Date:   Mon Jun 30 11:44:13 2014 +0530

    Merge remote-tracking branch 'origin/master' into better-peer-identification

commit 04c5d60cb938c8d94b214689580b40abb1b0ffcd
Merge: 3a5bfa1 e01edb6
Author: Kaushal M 
Date:   Sat Jun 28 19:23:33 2014 +0530

    Merge pull request #3 from vpshastry/better-peer-identification

    glusterd: search through the list of hostnames in the peerinfo

commit 0c64f3346a977f9165ac55a84a1e03c40a7573a7
Merge: e01edb6 3a5bfa1
Author: Varun Shastry 
Date:   Sat Jun 28 10:43:29 2014 +0530

    Merge branch 'better-peer-identification' of https://github.com/kshlm/glusterfs into better-peer-identification-kaushal-github

commit e01edb63153a1008db70b8fa76ae5b535e099326
Author: Varun Shastry 
Date:   Fri Jun 27 12:29:36 2014 +0530

    glusterd: search through the list of hostnames in the peerinfo

    Signed-off-by: Varun Shastry 

commit 3a5bfa15855e660db2bfde644727371dd2d618cc
Merge: cda6d31 371ea35
Author: Kaushal M 
Date:   Fri Jun 27 11:31:17 2014 +0530

    Merge pull request #1 from vpshastry/better-peer-identification

    glusterd: Add hostname to list instead of replaceing upon update

commit 371ea354f198b4182382d5403c5960c0b2add6b6
Author: Varun Shastry 
Date:   Fri Jun 27 11:24:54 2014 +0530

    glusterd: Add hostname to list instead of replaceing upon update

    Signed-off-by: Varun Shastry 

commit cda6d3152886623ecbf46baf0048ebe0119b30b6
Author: Kaushal M 
Date:   Thu Jun 26 19:52:52 2014 +0530

    Import address lists

commit 6649b54aa0440130c08e827e0a1d1bbfb840eca9
Author: Kaushal M 
Date:   Thu Jun 26 19:15:37 2014 +0530

    Implement export address list

commit 55990034eead92bc9b936240029e460a4bf152d5
Author: Kaushal M 
Date:   Thu Jun 26 18:11:59 2014 +0530

    Use first address in list to when setting up the peer RPC.

commit a35fde8d19b9988eb04c652fb3a5e4f84d90ad00
Author: Kaushal M 
Date:   Thu Jun 26 18:03:04 2014 +0530

    Properly free addresses on glusterd_peer_destroy

commit 1988081db09ac9205f3dc7268cef8be267f3ce8b
Author: Kaushal M 
Date:   Thu Jun 26 17:52:35 2014 +0530

    Restore peerinfo with address list implemented.

commit 66f524d5749a12f4910dd6b06c9d91f37e1d831e
Author: Kaushal M 
Date:   Mon Jun 23 13:02:23 2014 +0530

    Move out all peer related utilities from glusterd-utils to glusterd-peer-utils

commit 14a2a326a4dff11b55490dca2a14f39320931340
Author: Kaushal M 
Date:   Tue May 27 12:16:41 2014 +0530

    Compilation fix

commit c59cd351d0a102d0d5f3ea9001fd33c4edcb262f
Author: Kaushal M 
Date:   Mon May 5 12:51:11 2014 +0530

    Add store support for hostname list

commit b70325f0beb884ad12645ef40185f0bf6cedd741
Author: Kaushal M 
Date:   Fri May 2 15:58:07 2014 +0530

    Add a hostnames list to glusterd_peerinfo_t

    glusterd_peerinfo_new will now init this list and add the given hostname
    as the lists first member.

Signed-off-by: Kaushal M 
Signed-off-by: Varun Shastry 
Change-Id: Ief3c5d6d6f16571ee2fab0a45e638b9d6506a06e
BUG: 1119547
Reviewed-on: http://review.gluster.org/8238
Reviewed-by: Atin Mukherjee 
Tested-by: Gluster Build System 
Reviewed-by: Krishnan Parthasarathi 
Tested-by: Krishnan Parthasarathi

socket/glusterd/client: enable SSL for management

2014-07-10T14:37:12+00:00

The feature is controlled by presence of the following file:

	/var/lib/glusterd/secure-access

See the comment near the definition of SECURE_ACCESS_FILE in glusterfs.h
for the rationale.  With this enabled, the following rules apply to
connections:

	UNIX-domain sockets never have SSL.

	Management-port sockets (both connecting and accepting, in
	daemons and CLI) have SSL based on presence of the file.

	Other IP sockets have SSL based on the existing client.ssl and
	server.ssl volume options.

Transport multi-threading is explicitly turned off in glusterd (it would
otherwise be turned on when SSL is) due to multi-threading issues.
Tests have been elided to avoid risk of leaving a file which will cause
all subsequent tests to run with management SSL still enabled.

IMPLEMENTATION NOTE
The implementation is a bit messy, and consists of two stages.  First we
decide whether to set the relevant fields in our context structure, based
on presence of the sentinel file OR a command-line override.  Later we
decide whether a particular connection should actually use SSL, based on the
context flags plus what kind of connection we're making[1] and what kind of
daemon we're in[2].

[1] inbound, outbound to glusterd port, other outbound
[2] glusterd, glusterfsd, other

TESTING NOTE
Instead of just running one special test for this feature, the ideal
would be to run all tests with management SSL enabled.  However, it
would be inappropriate or premature to set up an optional feature in the
patch itself.  Therefore, the method of choice is to submit a separate
patch on top, which modifies "cleanup" in include.rc to recreate the
secure-access file and associated SSL certificate/key files before each
test.

Change-Id: I0e04d6d08163893e24ec8c031748c5c447d7f780
BUG: 1114604
Signed-off-by: Jeff Darcy 
Reviewed-on: http://review.gluster.org/8094
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

client_t: Fix memory leaks

2014-07-09T12:09:26+00:00

- Assign frame->root->client so that gf_client_unref happens
  in server_connection_cleanup_flush_cbk
- Avoid taking extra ref in gf_client_get

TODO:
The whole reason why there are two types of refs
bind, ref-count is to avoid lock inside lock which
is not the case now. I will be sending one more patch
which will accomplish that as well as changing the
tablearray to list

Change-Id: Ic9971cf248c5ee2cdbfdef8e9ff6d54e3ec60ced
BUG: 1116672
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/8247
Tested-by: Gluster Build System 
Reviewed-by: Kaleb KEITHLEY 
Reviewed-by: Vijay Bellur

Changes in statedump for stack, frame, locks

2014-07-07T17:27:00+00:00

Internal call-stacks don't have lk-owner so it is a bit
difficult to confirm if a stack hung by comparing two
statedump files. This change prints call-stack, frame's
address. This should solve the comparison problem.

Lock times and log times don't have same timezone because
of which one has to manually convert the times for debugging
the issues. This change prints blocked, granted times also
in UTC.

Also fixed line truncation issue when client-unique-string
is big.

Change-Id: I116372c0d63476823a36ca6dbfba91648f9234cc
BUG: 1114188
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/8197
Tested-by: Gluster Build System 
Reviewed-by: Raghavendra Bhat 
Reviewed-by: Ravishankar N 
Reviewed-by: Vijay Bellur

statedump: Don't print mem-type numbers

2014-07-07T04:21:58+00:00

Change-Id: I381bfa9535fe60c37758761d34b98dbbc4e5f569
BUG: 1114188
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/8239
Reviewed-by: Krishnan Parthasarathi 
Reviewed-by: Humble Devassy Chirammal 
Tested-by: Justin Clift 
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

porting: Provide fallocate and fremovexattr for OSX

2014-07-03T00:24:17+00:00

Change-Id: I563216f83edaff6d01a251ef0c1746a14aec700c
BUG: 1089172
Signed-off-by: Harshavardhana 
Reviewed-on: http://review.gluster.org/8217
Tested-by: Gluster Build System 
Reviewed-by: Kaleb KEITHLEY

porting: Port for FreeBSD rebased from Mike Ma's efforts

2014-07-03T00:20:34+00:00

- Provides a working Gluster Management Daemon, CLI
- Provides a working GlusterFS server, GlusterNFS server
- Provides a working GlusterFS client
- execinfo port from FreeBSD is moved into ./contrib/libexecinfo
  for ease of portability on NetBSD. (FreeBSD 10 and OSX provide
  execinfo natively)
- More portability cleanups for Darwin, FreeBSD and NetBSD
- Provides a new rc script for FreeBSD

Change-Id: I8dff336f97479ca5a7f9b8c6b730051c0f8ac46f
BUG: 1111774
Original-Author: Mike Ma 
Signed-off-by: Harshavardhana 
Reviewed-on: http://review.gluster.org/8141
Tested-by: Gluster Build System 
Reviewed-by: Kaleb KEITHLEY

libglusterfs/client_t: cliententries are never expanded

2014-07-02T17:07:41+00:00

clienttable->cliententries are never expanded once all the available
entries have been used.

Also removed a couple chatty log messages.

Change-Id: Iff2d92fe1116cc6c6b72ff3d173aee26e69780ed
BUG: 1113745
Signed-off-by: Kaleb S. KEITHLEY 
Reviewed-on: http://review.gluster.org/8184
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

libglusterfs: Ref root inode only once

2014-06-30T09:58:05+00:00

Change-Id: I75f309fc1fabb17c392697205b2b5cae6d855e72
BUG: 1113437
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/8182
Reviewed-by: Raghavendra Bhat 
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