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nbd: trace meta context negotiation

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Having a more detailed log of the interaction between client and
server is invaluable in debugging how meta context negotiation
actually works.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180330130950.1931229-1-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
This commit is contained in:
Eric Blake
2018-03-30 08:09:50 -05:00
parent 260e34dbb7
commit 2b53af2523
3 changed files with 16 additions and 0 deletions
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2
nbd/client.c
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@@ -623,6 +623,7 @@ static int nbd_negotiate_simple_meta_context(QIOChannel *ioc,
char *data = g_malloc(data_len);
char *p = data;
trace_nbd_opt_meta_request(context, export);
stl_be_p(p, export_len);
memcpy(p += sizeof(export_len), export, export_len);
stl_be_p(p += export_len, 1);
@@ -680,6 +681,7 @@ static int nbd_negotiate_simple_meta_context(QIOChannel *ioc,
}
g_free(name);
trace_nbd_opt_meta_reply(context, received_id);
received = true;
/* receive NBD_REP_ACK */