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qemu-nbd: Pass max connections to blockdev layer

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The next patch wants to adjust whether the NBD server code advertises
MULTI_CONN based on whether it is known if the server limits to
exactly one client.  For a server started by QMP, this information is
obtained through nbd_server_start (which can support more than one
export); but for qemu-nbd (which supports exactly one export), it is
controlled only by the command-line option -e/--shared.  Since we
already have a hook function used by qemu-nbd, it's easiest to just
alter its signature to fit our needs.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20220512004924.417153-2-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Eric Blake 2022-05-11 19:49:23 -05:00 • committed by Kevin Wolf
parent 46609b90d9
commit a5fced4021
3 changed files with 6 additions and 6 deletions
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2
qemu-nbd.c
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@ -1095,7 +1095,7 @@ int main(int argc, char **argv)
bs->detect_zeroes = detect_zeroes;
nbd_server_is_qemu_nbd(true);
nbd_server_is_qemu_nbd(shared);
export_opts = g_new(BlockExportOptions, 1);
*export_opts = (BlockExportOptions) {