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block/export: Add block-export-del

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Implement a new QMP command block-export-del and make nbd-server-remove
a wrapper around it.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200924152717.287415-21-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 17:27:06 +02:00
parent 3859ad36f0
commit 3c3bc462ad
7 changed files with 77 additions and 43 deletions
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14
nbd/server.c
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@ -1669,20 +1669,6 @@ static void nbd_export_request_shutdown(BlockExport *blk_exp)
blk_exp_unref(&exp->common);
}
void nbd_export_remove(NBDExport *exp, NbdServerRemoveMode mode, Error **errp)
{
ERRP_GUARD();
if (mode == NBD_SERVER_REMOVE_MODE_HARD || QTAILQ_EMPTY(&exp->clients)) {
nbd_export_request_shutdown(&exp->common);
return;
}
assert(mode == NBD_SERVER_REMOVE_MODE_SAFE);
error_setg(errp, "export '%s' still in use", exp->name);
error_append_hint(errp, "Use mode='hard' to force client disconnect\n");
}
static void nbd_export_delete(BlockExport *blk_exp)
{
NBDExport *exp = container_of(blk_exp, NBDExport, common);