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git://sourceware.org/git/lvm2.git
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Remove system LV code from clvmd. It's never been used and never should be
used! It's removal tidies a number of code paths inside clvmd.
This commit is contained in:
Patrick Caulfield
parent
7a6571fe05
commit
8ef3cec1f8
@ -1,5 +1,6 @@
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Version 2.02.26 -
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=================================
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Remove system-lv code from clvmd. It's highly dodgy and never used.
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Convert a lot of code pv dereferences to use get_pv_* functions.
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Suppress a couple benign warnings by adding variable initializations.
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Convert find_pv_in_vg_by_uuid and pv_create to use PV handles.
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@ -19,8 +19,7 @@ SOURCES = \
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clvmd-command.c \
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clvmd.c \
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lvm-functions.c \
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refresh_clvmd.c \
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system-lv.c
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refresh_clvmd.c
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ifeq ("@CLVMD@", "gulm")
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GULM = yes
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@ -45,7 +45,6 @@
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#include "version.h"
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#include "clvmd.h"
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#include "refresh_clvmd.h"
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#include "system-lv.h"
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#include "list.h"
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#include "log.h"
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@ -58,10 +57,6 @@
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#define MAX_RETRIES 4
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/* The maximum size of a message that will fit into a packet. Anything bigger
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than this is sent via the system LV */
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#define MAX_INLINE_MESSAGE (max_cluster_message-sizeof(struct clvm_header))
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#define ISLOCAL_CSID(c) (memcmp(c, our_csid, max_csid_len) == 0)
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/* Head of the fd list. Also contains
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@ -1062,31 +1057,6 @@ int add_client(struct local_client *new_client)
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return 0;
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}
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/*
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* Send a long message using the System LV
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*/
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static int send_long_message(struct local_client *thisfd, struct clvm_header *inheader, int len)
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{
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struct clvm_header new_header;
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int status;
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DEBUGLOG("Long message: being sent via system LV:\n");
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/* Use System LV */
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status = system_lv_write_data((char *)inheader, len);
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if (status < 0)
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return errno;
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/* Send message indicating System-LV is being used */
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memcpy(&new_header, inheader, sizeof(new_header));
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new_header.flags |= CLVMD_FLAG_SYSTEMLV;
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new_header.xid = thisfd->xid;
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return send_message(&new_header, sizeof(new_header), NULL, -1,
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"Error forwarding long message to cluster");
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}
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/* Called when the pre-command has completed successfully - we
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now execute the real command on all the requested nodes */
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static int distribute_command(struct local_client *thisfd)
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@ -1113,13 +1083,9 @@ static int distribute_command(struct local_client *thisfd)
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add_to_lvmqueue(thisfd, inheader, len, NULL);
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DEBUGLOG("Sending message to all cluster nodes\n");
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if (len > MAX_INLINE_MESSAGE) {
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send_long_message(thisfd, inheader, len );
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} else {
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inheader->xid = thisfd->xid;
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send_message(inheader, len, NULL, -1,
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"Error forwarding message to cluster");
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}
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inheader->xid = thisfd->xid;
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send_message(inheader, len, NULL, -1,
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"Error forwarding message to cluster");
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} else {
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/* Do it on a single node */
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char csid[MAX_CSID_LEN];
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@ -1140,14 +1106,10 @@ static int distribute_command(struct local_client *thisfd)
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} else {
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DEBUGLOG("Sending message to single node: %s\n",
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inheader->node);
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if (len > MAX_INLINE_MESSAGE) {
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send_long_message(thisfd, inheader, len );
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} else {
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inheader->xid = thisfd->xid;
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send_message(inheader, len,
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csid, -1,
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"Error forwarding message to cluster node");
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}
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inheader->xid = thisfd->xid;
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send_message(inheader, len,
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csid, -1,
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"Error forwarding message to cluster node");
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}
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}
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}
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@ -1178,55 +1140,6 @@ static void process_remote_command(struct clvm_header *msg, int msglen, int fd,
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DEBUGLOG("process_remote_command %d for clientid 0x%x XID %d on node %s\n",
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msg->cmd, msg->clientid, msg->xid, nodename);
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/* Is the data to be found in the system LV ? */
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if (msg->flags & CLVMD_FLAG_SYSTEMLV) {
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struct clvm_header *newmsg;
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DEBUGLOG("Reading message from system LV\n");
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newmsg =
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(struct clvm_header *) malloc(msg->arglen +
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sizeof(struct clvm_header));
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if (newmsg) {
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ssize_t len;
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if (system_lv_read_data(nodename, (char *) newmsg,
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&len) == 0) {
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msg = newmsg;
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msg_malloced = 1;
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msglen = len;
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} else {
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struct clvm_header head;
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DEBUGLOG("System LV read failed\n");
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/* Return a failure response */
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head.cmd = CLVMD_CMD_REPLY;
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head.status = EFBIG;
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head.flags = 0;
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head.clientid = msg->clientid;
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head.arglen = 0;
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head.node[0] = '\0';
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send_message(&head, sizeof(struct clvm_header),
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csid, fd,
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"Error sending ENOMEM command reply");
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return;
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}
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} else {
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struct clvm_header head;
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DEBUGLOG
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("Error attempting to malloc %d bytes for system LV read\n",
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msg->arglen);
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/* Return a failure response */
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head.cmd = CLVMD_CMD_REPLY;
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head.status = ENOMEM;
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head.flags = 0;
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head.clientid = msg->clientid;
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head.arglen = 0;
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head.node[0] = '\0';
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send_message(&head, sizeof(struct clvm_header), csid,
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fd, "Error sending ENOMEM command reply");
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return;
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}
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}
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/* Check for GOAWAY and sulk */
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if (msg->cmd == CLVMD_CMD_GOAWAY) {
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@ -1301,40 +1214,16 @@ static void process_remote_command(struct clvm_header *msg, int msglen, int fd,
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replyargs, replylen);
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agghead->xid = msg->xid;
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/* Use the system LV ? */
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if (replylen > MAX_INLINE_MESSAGE) {
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agghead->cmd = CLVMD_CMD_REPLY;
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agghead->status = status;
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agghead->flags = CLVMD_FLAG_SYSTEMLV;
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agghead->clientid = msg->clientid;
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agghead->arglen = replylen;
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agghead->node[0] = '\0';
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/* If System LV operation failed then report it as EFBIG but only do it
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if the data buffer has something in it. */
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if (system_lv_write_data(aggreply,
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replylen + sizeof(struct clvm_header)) < 0
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&& replylen > 0)
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agghead->status = EFBIG;
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send_message(agghead,
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sizeof(struct clvm_header), csid,
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fd,
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"Error sending long command reply");
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} else {
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agghead->cmd = CLVMD_CMD_REPLY;
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agghead->status = status;
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agghead->flags = 0;
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agghead->clientid = msg->clientid;
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agghead->arglen = replylen;
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agghead->node[0] = '\0';
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send_message(aggreply,
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sizeof(struct clvm_header) +
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replylen, csid, fd,
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"Error sending command reply");
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}
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agghead->cmd = CLVMD_CMD_REPLY;
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agghead->status = status;
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agghead->flags = 0;
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agghead->clientid = msg->clientid;
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agghead->arglen = replylen;
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agghead->node[0] = '\0';
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send_message(aggreply,
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sizeof(struct clvm_header) +
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replylen, csid, fd,
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"Error sending command reply");
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} else {
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struct clvm_header head;
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