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nbd/client: Request extended headers during negotiation

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All the pieces are in place for a client to finally request extended
headers.  Note that we must not request extended headers when qemu-nbd
is used to connect to the kernel module (as nbd.ko does not expect
them, but expects us to do the negotiation in userspace before handing
the socket over to the kernel), but there is no harm in all other
clients requesting them.

Extended headers are not essential to the information collected during
'qemu-nbd --list', but probing for it gives us one more piece of
information in that output.  Update the iotests affected by the new
line of output.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-ID: <20230925192229.3186470-23-eblake@redhat.com>
This commit is contained in:
Eric Blake 2023-09-25 14:22:39 -05:00
parent a7c18670b4
commit 56cf9d0471
8 changed files with 38 additions and 6 deletions
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2
nbd/client-connection.c
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@ -93,7 +93,7 @@ NBDClientConnection *nbd_client_connection_new(const SocketAddress *saddr,
.do_negotiation = do_negotiation,
.initial_info.request_sizes = true,
.initial_info.mode = NBD_MODE_STRUCTURED,
.initial_info.mode = NBD_MODE_EXTENDED,
.initial_info.base_allocation = true,
.initial_info.x_dirty_bitmap = g_strdup(x_dirty_bitmap),
.initial_info.name = g_strdup(export_name ?: "")