[Qemu-devel] [PATCHv9 0/5] block: add native support for NFS

[Peter Lieven <pl@kamp.de>]

This adds v9 of the NFS protocol driver + qemu-iotest adjustments.

v8->v9:
 - change _supported_proto for qemu-iotests 071 & 072 from generic to file

v7->v8:
 - bump libnfs requirement to 1.9.2
 - renamed NFSRPC->status to NFSRPC->ret [Benoit]
 - avoid double invocation of nfs_client_close in nfs_file_create [Benoit]
 - fixed error propagation in nfs_file_open [Benoit]

v6->v7:
 - removed unsused and partially non-existing libnfs header file includes [Stefan]
 - adjusted usage of qemu_opts_create_nofail [Stefan]
 - removed patch to fix output of qemu-iotest 067
 - only blacklist qemu-iotest 020 for NFS do not change proto from generic to file [Fam]

v5->v6:
 - use internal qemu function to parse the NFS url [Kevin]
 - zero pad short reads [Kevin, Paolo]
 - added qemu-iotests patches for basic nfs protocol support

v4->v5:
 - disussed with Ronnie and decided to move URL + Paramter parsing to LibNFS.
   This allows for URL parameter processing directly in LibNFS without altering
   the qemu NFS block driver. This bumps the version requirement for LibNFS
   to 1.9.0 though.
 - added a pointer to the LibNFS readme where additional information about
   ROOT privilidge requirements can be found as this raised a few concerns.
 - removed a trailing dot in an error statement [Fam].

v3->v4:
 - finally added full implementation of bdrv_get_allocated_file_size [Stefan]
 - removed trailing \n from error statements [Stefan]

v2->v3:
 - rebased the stefanha/block
 - use pkg_config to check for libnfs (ignoring cflags which are broken in 1.8.0) [Stefan]
 - fixed NFSClient declaration [Stefan]
 - renamed Task variables to task [Stefan]
 - renamed NFSTask to NFSRPC [Ronnie]
 - do not update bs->total_sectors in nfs_co_writev [Stefan]
 - return -ENOMEM on all async call failures [Stefan,Ronnie]
 - fully implement ftruncate
 - use util/uri.c for URL parsing [Stefan]
 - reworked nfs_file_open_common to nfs_client_open which works on NFSClient [Stefan]
 - added a comment ot the connect message that libnfs support NFSv3 only at the moment.
 - DID NOT add full implementation of bdrv_get_allocated_file_size because
   we are not in a coroutine context and I cannot do an async call here.
   I could do a sync call if there would be a guarantee that no requests
   are in flight. [Stefan]

v1->v2:
 - fixed block/Makefile.objs [Ronnie]
 - do not always register a read handler [Ronnie]
 - add support for reading beyond EOF [Fam]
 - fixed struct and paramter naming [Fam]
 - fixed overlong lines and whitespace errors [Fam]
 - return return status from libnfs whereever possible [Fam]
 - added comment why we set allocated_file_size to -ENOTSUP after write [Fam]
 - avoid segfault when parsing filname [Fam]
 - remove unused close_bh from NFSClient [Fam]
 - avoid dividing and mutliplying total_size by BDRV_SECTOR_SIZE in nfs_file_create [Fam] 

Peter Lieven (5):
  block: add native support for NFS
  qemu-iotests: change _supported_proto to file for various tests
  qemu-iotests: blacklist test 020 for NFS protocol
  qemu-iotests: enable test 016 and 025 to work with NFS protocol
  qemu-iotests: enable support for NFS protocol

 MAINTAINERS                  |    5 +
 block/Makefile.objs          |    1 +
 block/nfs.c                  |  439 ++++++++++++++++++++++++++++++++++++++++++
 configure                    |   26 +++
 qapi-schema.json             |    1 +
 tests/qemu-iotests/013       |    2 +-
 tests/qemu-iotests/014       |    2 +-
 tests/qemu-iotests/016       |    2 +-
 tests/qemu-iotests/018       |    2 +-
 tests/qemu-iotests/019       |    2 +-
 tests/qemu-iotests/020       |    5 +
 tests/qemu-iotests/023       |    2 +-
 tests/qemu-iotests/024       |    2 +-
 tests/qemu-iotests/025       |    2 +-
 tests/qemu-iotests/026       |    2 +-
 tests/qemu-iotests/028       |    2 +-
 tests/qemu-iotests/031       |    2 +-
 tests/qemu-iotests/034       |    2 +-
 tests/qemu-iotests/036       |    2 +-
 tests/qemu-iotests/037       |    2 +-
 tests/qemu-iotests/038       |    2 +-
 tests/qemu-iotests/039       |    2 +-
 tests/qemu-iotests/043       |    2 +-
 tests/qemu-iotests/046       |    2 +-
 tests/qemu-iotests/052       |    2 +-
 tests/qemu-iotests/054       |    2 +-
 tests/qemu-iotests/059       |    2 +-
 tests/qemu-iotests/060       |    2 +-
 tests/qemu-iotests/061       |    2 +-
 tests/qemu-iotests/063       |    2 +-
 tests/qemu-iotests/069       |    2 +-
 tests/qemu-iotests/071       |    2 +-
 tests/qemu-iotests/072       |    2 +-
 tests/qemu-iotests/common    |   22 ++-
 tests/qemu-iotests/common.rc |    3 +
 35 files changed, 526 insertions(+), 30 deletions(-)
 create mode 100644 block/nfs.c

-- 
1.7.9.5