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nbd: Include error names in trace messages

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NBD errors were originally sent over the wire based on Linux errno
values; but not all the world is Linux, and not all platforms share
the same values.  Since a number isn't very easy to decipher on all
platforms, update the trace messages to include the name of NBD
errors being sent/received over the wire.  Tweak the trace messages
to be at the point where we are using the NBD error, not the
translation to the host errno values.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20171027104037.8319-2-eblake@redhat.com>
This commit is contained in:
Eric Blake 2017-10-27 12:40:26 +02:00
parent abf6e752e5
commit e7a78d0eff
5 changed files with 30 additions and 4 deletions
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3
nbd/server.c
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@ -1227,7 +1227,8 @@ static int nbd_co_send_simple_reply(NBDClient *client,
{.iov_base = data, .iov_len = len}
};
trace_nbd_co_send_simple_reply(handle, nbd_err, len);
trace_nbd_co_send_simple_reply(handle, nbd_err, nbd_err_lookup(nbd_err),
len);
set_be_simple_reply(&reply, nbd_err, handle);
return nbd_co_send_iov(client, iov, len ? 2 : 1, errp);