The previous patch accidentally dropped the suggestion that a server replying with NBD_REP_ERR_BLOCK_SIZE_REQD should first send NBD_REP_INFO with NBD_INFO_BLOCK_SIZE, so that the client doesn't have to do yet another round trip NBD_OPT_INFO to learn what sizes the server plans to enforce.
Signed-off-by: Eric Blake <[email protected]> --- extension-info branch doc/proto.md | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/doc/proto.md b/doc/proto.md index 1a0f1cf..da65df0 100644 --- a/doc/proto.md +++ b/doc/proto.md @@ -949,12 +949,13 @@ of the newstyle negotiation. - `NBD_REP_ERR_BLOCK_SIZE_REQD`: The server requires the client to request block size constraints using `NBD_INFO_BLOCK_SIZE` prior to entering transmission phase, because the server will be using - non-default block sizes constraints. The server MUST NOT send this - error if block size constraints were requested with - `NBD_INFO_BLOCK_SIZE` with the `NBD_OPT_INFO` or `NBD_OPT_GO` - request. The server SHOULD NOT send this error if it is using - default block size constraints or block size constraints - negotiated out of band. + non-default block sizes constraints. The server SHOULD first + send at least an `NBD_INFO_BLOCK_SIZE` information reply before + giving this error. The server MUST NOT send this error if block + size constraints were requested with `NBD_INFO_BLOCK_SIZE` with + the `NBD_OPT_INFO` or `NBD_OPT_GO` request. The server SHOULD + NOT send this error if it is using default block size + constraints or block size constraints negotiated out of band. Additionally, if TLS has not been initiated, the server MAY reply with `NBD_REP_ERR_TLS_REQD` (instead of `NBD_REP_ERR_UNKNOWN`) to -- 2.5.5 ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Nbd-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nbd-general
