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nbd: Add max-connections to nbd-server-start

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This is a QMP equivalent of qemu-nbd's --shared option, limiting the
maximum number of clients that can attach at the same time.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924152717.287415-9-kwolf@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2020-09-24 17:26:54 +02:00
parent 9b562c646b
commit 1c8222b014
5 changed files with 39 additions and 13 deletions
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10
qapi/block-export.json
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@ -20,13 +20,16 @@
# is only resolved at time of use, so can be deleted and
# recreated on the fly while the NBD server is active.
# If missing, it will default to denying access (since 4.0).
# @max-connections: The maximum number of connections to allow at the same
# time, 0 for unlimited. (since 5.2; default: 0)
#
# Since: 4.2
##
{ 'struct': 'NbdServerOptions',
'data': { 'addr': 'SocketAddress',
'*tls-creds': 'str',
'*tls-authz': 'str'} }
'*tls-authz': 'str',
'*max-connections': 'uint32' } }
##
# @nbd-server-start:
@ -46,6 +49,8 @@
# is only resolved at time of use, so can be deleted and
# recreated on the fly while the NBD server is active.
# If missing, it will default to denying access (since 4.0).
# @max-connections: The maximum number of connections to allow at the same
# time, 0 for unlimited. (since 5.2; default: 0)
#
# Returns: error if the server is already running.
#
@ -54,7 +59,8 @@
{ 'command': 'nbd-server-start',
'data': { 'addr': 'SocketAddressLegacy',
'*tls-creds': 'str',
'*tls-authz': 'str'} }
'*tls-authz': 'str',
'*max-connections': 'uint32' } }
##
# @BlockExportOptionsNbd: