[Qemu-devel] [PATCH v20 0/5] block/gluster: add support for multiple gluster servers

[Prasanna Kumar Kalever <prasanna.kalever@redhat.com>]

This version of patches are rebased repo at
git://repo.or.cz/qemu/armbru.git qapi-not-next

Prasanna Kumar Kalever (5):
  block/gluster: rename [server, volname, image] -> [host, volume, path]
  block/gluster: code cleanup
  block/gluster: deprecate rdma support
  block/gluster: using new qapi schema
  block/gluster: add support for multiple gluster servers

v1:
multiple host addresses but common port number and transport type
pattern: URI syntax with query (?) delimitor
syntax:
    file=gluster[+transport-type]://host1:24007/testvol/a.img\
         ?server=host2&server=host3

v2:
multiple host addresses each have their own port number, but all use
                                                         common transport type
pattern: URI syntax  with query (?) delimiter
syntax:
    file=gluster[+transport-type]://[host[:port]]/testvol/a.img\
         [?server=host1[:port]\
          &server=host2[:port]]

v3:
multiple host addresses each have their own port number and transport type
pattern: changed to json
syntax:
    'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol",
           "path":"/path/a.qcow2","server":
         [{"host":"1.2.3.4","port":"24007","transport":"tcp"},
          {"host":"4.5.6.7","port":"24008","transport":"rdma"}] } }'

v4, v5:
address comments from "Eric Blake" <eblake@redhat.com>
renamed:
'backup-volfile-servers' -> 'volfile-servers'

v6:
address comments from Peter Krempa <pkrempa@redhat.com>
renamed:
 'volname'    ->  'volume'
 'image-path' ->  'path'
 'server'     ->  'host'

v7:
fix for v6 (initialize num_servers to 1 and other typos)

v8:
split patch set v7 into series of 3 as per Peter Krempa <pkrempa@redhat.com>
review comments

v9:
reorder the series of patches addressing "Eric Blake" <eblake@redhat.com>
review comments

v10:
fix mem-leak as per Peter Krempa <pkrempa@redhat.com> review comments

v11:
using qapi-types* defined structures as per "Eric Blake" <eblake@redhat.com>
review comments.

v12:
fix crash caused in qapi_free_BlockdevOptionsGluster

v13:
address comments from "Jeff Cody" <jcody@redhat.com>

v14:
address comments from "Eric Blake" <eblake@redhat.com>
split patch 3/3 into two
rename input option and variable from 'servers' to 'server'

v15:
patch 1/4 changed the commit message as per Eric's comment
patch 2/4 are unchanged
patch 3/4 addressed Jeff's comments
patch 4/4 concentrates on unix transport related help info,
rename 'parse_transport_option()' to 'qapi_enum_parse()',
address memory leaks and other comments given by Jeff and Eric

v16:
In patch 4/4 fixed segfault on glfs_init() error case, as per Jeff's comments
other patches in this series remain unchanged

v17:
rebase of v16 on latest master

v18:
rebase of v17 on latest master
rebase has demanded type conversion of 'qemu_gluster_init()'[s] first argument
from 'BlockdevOptionsGluster**' to 'BlockdevOptionsGluster*' and all its callees
both in 3/4 and 4/4 patches

v19:
patches 1/5, 2/5 remains unchanged

patch 3/5 is something new, in which the rdma deadcode is removed

patch 4/5 (i.e. 3/4 in v18) now uses union discriminator, I have made a choice
to use gluster with custom schema since @UnixSocketAddress uses 'path' as key,
which may be confusing with gluster, and in @InetSocketAddress port was str
again I have made a choice to keep it uint16 which really make sense.
Hmmm.. As Markus suggested in v18 qemu_gluster_parseuri() is *parse_uri() same
with *parse_json() (in 5/5)

patch 5/5 (i.e 4/4 in v18) adds a list of servers and json parser functionality
as usual

Thanks to Markus and Eric for help in understanding the new schema changes.

v20:
address comments from Markus and Eric on v19
patch 4/5 and 5/5 Use InetSocketAddress instead of GlusterInetSocketAddress
Port is not optional anymore

 block/gluster.c      | 637 +++++++++++++++++++++++++++++++++++++++------------
 qapi/block-core.json |  68 +++++-
 2 files changed, 553 insertions(+), 152 deletions(-)

-- 
2.7.4