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fs: dlm: don't use RCOM_NAMES for version detection 

Currently RCOM_STATUS and RCOM_NAMES inclusive their replies are being
used to determine the DLM version. The RCOM_NAMES messages are triggered
in DLM recovery when calling dlm_recover_directory() only. At this time
the DLM version need to be determined. I ran some tests and did not
expirenced some issues. When the DLM version detection was developed
probably I run once in a case of RCOM_NAMES and the version was not
detected yet. However it seems to be not necessary.

For backwards compatibility we still need to accept RCOM_NAMES messages
which are not protected regarding the DLM message reliability layer aka
stateless message. This patch changes that RCOM_NAMES we are sending out
after this patch are not stateless anymore.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
Alexander Aring 2023-08-01 14:09:50 -04:00 committed by David Teigland
parent 63e711b081
commit a3d85fcf26
1 changed files with 8 additions and 8 deletions
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16
fs/dlm/rcom.c
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@ -308,15 +308,15 @@ static void receive_sync_reply(struct dlm_ls *ls, const struct dlm_rcom *rc_in)
int dlm_rcom_names(struct dlm_ls *ls, int nodeid, char *last_name,
int last_len, uint64_t seq)
{
struct dlm_mhandle *mh;
struct dlm_rcom *rc;
struct dlm_msg *msg;
int error = 0;
ls->ls_recover_nodeid = nodeid;
retry:
error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES, last_len,
&rc, &msg, seq);
error = create_rcom(ls, nodeid, DLM_RCOM_NAMES, last_len,
&rc, &mh, seq);
if (error)
goto out;
memcpy(rc->rc_buf, last_name, last_len);
@ -324,7 +324,7 @@ retry:
allow_sync_reply(ls, &rc->rc_id);
memset(ls->ls_recover_buf, 0, DLM_MAX_SOCKET_BUFSIZE);
send_rcom_stateless(msg, rc);
send_rcom(mh, rc);
error = dlm_wait_function(ls, &rcom_response);
disallow_sync_reply(ls);
@ -337,17 +337,17 @@ retry:
static void receive_rcom_names(struct dlm_ls *ls, const struct dlm_rcom *rc_in,
uint64_t seq)
{
struct dlm_mhandle *mh;
struct dlm_rcom *rc;
int error, inlen, outlen, nodeid;
struct dlm_msg *msg;
nodeid = le32_to_cpu(rc_in->rc_header.h_nodeid);
inlen = le16_to_cpu(rc_in->rc_header.h_length) -
sizeof(struct dlm_rcom);
outlen = DLM_MAX_APP_BUFSIZE - sizeof(struct dlm_rcom);
error = create_rcom_stateless(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen,
&rc, &msg, seq);
error = create_rcom(ls, nodeid, DLM_RCOM_NAMES_REPLY, outlen,
&rc, &mh, seq);
if (error)
return;
rc->rc_id = rc_in->rc_id;
@ -355,7 +355,7 @@ static void receive_rcom_names(struct dlm_ls *ls, const struct dlm_rcom *rc_in,
dlm_copy_master_names(ls, rc_in->rc_buf, inlen, rc->rc_buf, outlen,
nodeid);
send_rcom_stateless(msg, rc);
send_rcom(mh, rc);
}
int dlm_send_rcom_lookup(struct dlm_rsb *r, int dir_nodeid, uint64_t seq)