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/*
Copyright (c) 2016 Red Hat, Inc. <http://www.redhat.com>
This file is part of GlusterFS.
This file is licensed to you under your choice of the GNU Lesser
General Public License, version 3 or any later version (LGPLv3 or
later), or the GNU General Public License, version 2 (GPLv2), in all
cases as published by the Free Software Foundation.
*/
#include "common-utils.h"
#include "cli1-xdr.h"
#include "xdr-generic.h"
#include "glusterfs.h"
#include "glusterd.h"
#include "glusterd-op-sm.h"
#include "glusterd-geo-rep.h"
#include "glusterd-store.h"
#include "glusterd-utils.h"
#include "glusterd-svc-mgmt.h"
#include "glusterd-svc-helper.h"
#include "glusterd-nfs-svc.h"
#include "glusterd-volgen.h"
#include "glusterd-messages.h"
#include "glusterd-mgmt.h"
#include "run.h"
#include "syscall.h"
#include <signal.h>
int
glusterd_reset_brick_prevalidate (dict_t *dict, char **op_errstr,
dict_t *rsp_dict)
{
int ret = 0;
char *src_brick = NULL;
char *dst_brick = NULL;
char *volname = NULL;
char *op = NULL;
glusterd_op_t gd_op = -1;
glusterd_volinfo_t *volinfo = NULL;
glusterd_brickinfo_t *src_brickinfo = NULL;
char *host = NULL;
char msg[2048] = {0};
glusterd_peerinfo_t *peerinfo = NULL;
glusterd_brickinfo_t *dst_brickinfo = NULL;
glusterd_conf_t *priv = NULL;
char pidfile[PATH_MAX] = {0};
xlator_t *this = NULL;
gf_boolean_t is_force = _gf_false;
pid_t pid = -1;
uuid_t volume_id = {0,};
char *dup_dstbrick = NULL;
this = THIS;
GF_ASSERT (this);
priv = this->private;
GF_ASSERT (priv);
ret = glusterd_brick_op_prerequisites (dict, &op, &gd_op,
&volname, &volinfo,
&src_brick, &src_brickinfo,
pidfile,
op_errstr, rsp_dict);
if (ret)
goto out;
if (!strcmp (op, "GF_RESET_OP_START"))
goto done;
if (!strcmp (op, "GF_RESET_OP_COMMIT_FORCE"))
is_force = _gf_true;
ret = glusterd_get_dst_brick_info (&dst_brick, volname,
op_errstr,
&dst_brickinfo, &host,
dict, &dup_dstbrick);
if (ret)
goto out;
ret = glusterd_new_brick_validate (dst_brick, dst_brickinfo,
msg, sizeof (msg), op);
/* if bricks are not same and reset brick was used, fail command.
* Only replace brick should be used to replace with new bricks
* to the volume.
*/
if (ret == 0) {
if (!gf_uuid_compare (MY_UUID, dst_brickinfo->uuid)) {
ret = -1;
*op_errstr = gf_strdup
("When destination brick is new,"
" please use"
" gluster volume "
"replace-brick <volname> "
"<src-brick> <dst-brick> "
"commit force");
if (*op_errstr)
gf_msg (this->name,
GF_LOG_ERROR,
EPERM,
GD_MSG_BRICK_VALIDATE_FAIL,
"%s", *op_errstr);
goto out;
}
} else if (ret == 1) {
if (gf_is_service_running (pidfile, &pid)) {
ret = -1;
*op_errstr = gf_strdup
("Source brick"
" must be stopped."
" Please use "
"gluster volume "
"reset-brick <volname> "
"<dst-brick> start.");
if (*op_errstr)
gf_msg (this->name,
GF_LOG_ERROR,
EPERM,
GD_MSG_BRICK_VALIDATE_FAIL,
"%s", *op_errstr);
goto out;
}
ret = sys_lgetxattr (dst_brickinfo->path,
GF_XATTR_VOL_ID_KEY,
volume_id, 16);
if (gf_uuid_compare (dst_brickinfo->uuid,
src_brickinfo->uuid) ||
(ret >= 0 && is_force == _gf_false)) {
ret = -1;
*op_errstr = gf_strdup ("Brick not available."
"It may be containing "
"or be contained "
"by an existing brick."
"Use 'force' option to "
"override this.");
if (*op_errstr)
gf_msg (this->name,
GF_LOG_ERROR,
EPERM,
GD_MSG_BRICK_VALIDATE_FAIL,
"%s", *op_errstr);
goto out;
}
ret = 0;
} else {
*op_errstr = gf_strdup (msg);
ret = -1;
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_BRICK_VALIDATE_FAIL, "%s", *op_errstr);
goto out;
}
volinfo->rep_brick.src_brick = src_brickinfo;
volinfo->rep_brick.dst_brick = dst_brickinfo;
if (gf_is_local_addr (host)) {
ret = glusterd_validate_and_create_brickpath
(dst_brickinfo,
volinfo->volume_id,
op_errstr, is_force);
if (ret)
goto out;
} else {
rcu_read_lock ();
peerinfo = glusterd_peerinfo_find (NULL, host);
if (peerinfo == NULL) {
ret = -1;
snprintf (msg, sizeof (msg),
"%s, is not a friend.",
host);
*op_errstr = gf_strdup (msg);
} else if (!peerinfo->connected) {
snprintf (msg, sizeof (msg), "%s,"
"is not connected at "
"the moment.", host);
*op_errstr = gf_strdup (msg);
ret = -1;
} else if (GD_FRIEND_STATE_BEFRIENDED !=
peerinfo->state.state) {
snprintf (msg, sizeof (msg),
"%s, is not befriended "
"at the moment.", host);
*op_errstr = gf_strdup (msg);
ret = -1;
}
rcu_read_unlock ();
if (ret)
goto out;
}
ret = glusterd_get_brick_mount_dir
(dst_brickinfo->path,
dst_brickinfo->hostname,
dst_brickinfo->mount_dir);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_BRICK_MOUNTDIR_GET_FAIL,
"Failed to get brick mount_dir.");
goto out;
}
ret = dict_set_dynstr_with_alloc (rsp_dict,
"brick1.mount_dir",
dst_brickinfo->mount_dir);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_SET_FAILED,
"Failed to set brick1.mount_dir");
goto out;
}
ret = dict_set_int32 (rsp_dict, "brick_count", 1);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_SET_FAILED,
"Failed to set local_brick_count.");
goto out;
}
done:
ret = 0;
out:
GF_FREE (dup_dstbrick);
gf_msg_debug (this->name, 0, "Returning %d.", ret);
return ret;
}
int
glusterd_op_reset_brick (dict_t *dict, dict_t *rsp_dict)
{
int ret = 0;
char *op = NULL;
glusterd_volinfo_t *volinfo = NULL;
char *volname = NULL;
xlator_t *this = NULL;
glusterd_conf_t *priv = NULL;
char *src_brick = NULL;
char *dst_brick = NULL;
glusterd_brickinfo_t *src_brickinfo = NULL;
glusterd_brickinfo_t *dst_brickinfo = NULL;
char pidfile[PATH_MAX] = {0,};
this = THIS;
GF_ASSERT (this);
priv = this->private;
GF_ASSERT (priv);
ret = dict_get_str (dict, "operation", &op);
if (ret) {
gf_msg_debug (this->name, 0,
"dict_get on operation failed");
goto out;
}
ret = dict_get_str (dict, "volname", &volname);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_GET_FAILED, "Unable to get volume name");
goto out;
}
ret = glusterd_volinfo_find (volname, &volinfo);
if (ret)
goto out;
ret = dict_get_str (dict, "src-brick", &src_brick);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_GET_FAILED, "Unable to get src brick");
goto out;
}
gf_msg_debug (this->name, 0, "src brick=%s", src_brick);
ret = glusterd_volume_brickinfo_get_by_brick (src_brick, volinfo,
&src_brickinfo,
_gf_false);
if (ret) {
gf_msg_debug (this->name, 0,
"Unable to get src-brickinfo");
goto out;
}
if (!strcmp (op, "GF_RESET_OP_START")) {
(void) glusterd_brick_disconnect (src_brickinfo);
GLUSTERD_GET_BRICK_PIDFILE (pidfile, volinfo,
src_brickinfo, priv);
ret = glusterd_service_stop ("brick", pidfile,
SIGTERM, _gf_false);
if (ret == 0) {
glusterd_set_brick_status (src_brickinfo,
GF_BRICK_STOPPED);
(void) glusterd_brick_unlink_socket_file
(volinfo, src_brickinfo);
gf_msg (this->name, GF_LOG_INFO, 0,
GD_MSG_BRICK_CLEANUP_SUCCESS,
"Brick cleanup successful.");
} else {
gf_msg (this->name, GF_LOG_CRITICAL, 0,
GD_MSG_BRK_CLEANUP_FAIL,
"Unable to cleanup src brick");
goto out;
}
goto out;
} else if (!strcmp (op, "GF_RESET_OP_COMMIT") ||
!strcmp (op, "GF_RESET_OP_COMMIT_FORCE")) {
ret = dict_get_str (dict, "dst-brick", &dst_brick);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_DICT_GET_FAILED,
"Unable to get dst brick");
goto out;
}
gf_msg_debug (this->name, 0, "dst brick=%s", dst_brick);
ret = glusterd_get_rb_dst_brickinfo (volinfo,
&dst_brickinfo);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_RB_BRICKINFO_GET_FAIL,
"Unable to get "
"reset brick "
"destination brickinfo");
goto out;
}
ret = glusterd_resolve_brick (dst_brickinfo);
if (ret) {
gf_msg_debug (this->name, 0,
"Unable to resolve dst-brickinfo");
goto out;
}
ret = rb_update_dstbrick_port (dst_brickinfo, rsp_dict,
dict);
if (ret)
goto out;
if (gf_is_local_addr (dst_brickinfo->hostname)) {
gf_msg_debug (this->name, 0, "I AM THE DESTINATION HOST");
(void) glusterd_brick_disconnect (src_brickinfo);
GLUSTERD_GET_BRICK_PIDFILE (pidfile, volinfo,
src_brickinfo, priv);
ret = glusterd_service_stop ("brick", pidfile,
SIGTERM, _gf_false);
if (ret == 0) {
glusterd_set_brick_status
(src_brickinfo, GF_BRICK_STOPPED);
(void) glusterd_brick_unlink_socket_file
(volinfo, src_brickinfo);
gf_msg (this->name, GF_LOG_INFO, 0,
GD_MSG_BRICK_CLEANUP_SUCCESS,
"Brick cleanup successful.");
} else {
gf_msg (this->name, GF_LOG_CRITICAL, 0,
GD_MSG_BRK_CLEANUP_FAIL,
"Unable to cleanup src brick");
goto out;
}
}
ret = glusterd_svcs_stop (volinfo);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_GLUSTER_SERVICES_STOP_FAIL,
"Unable to stop gluster services, ret: %d",
ret);
goto out;
}
ret = glusterd_op_perform_replace_brick (volinfo, src_brick,
dst_brick, dict);
if (ret) {
gf_msg (this->name, GF_LOG_CRITICAL, 0,
GD_MSG_BRICK_ADD_FAIL,
"Unable to add dst-brick: "
"%s to volume: %s", dst_brick,
volinfo->volname);
(void) glusterd_svcs_manager (volinfo);
goto out;
}
volinfo->rebal.defrag_status = 0;
ret = glusterd_svcs_manager (volinfo);
if (ret) {
gf_msg (this->name, GF_LOG_CRITICAL, 0,
GD_MSG_GLUSTER_SERVICE_START_FAIL,
"Failed to start one or more gluster services.");
}
ret = glusterd_fetchspec_notify (THIS);
glusterd_brickinfo_delete (volinfo->rep_brick.dst_brick);
volinfo->rep_brick.src_brick = NULL;
volinfo->rep_brick.dst_brick = NULL;
if (!ret)
ret = glusterd_store_volinfo (volinfo,
GLUSTERD_VOLINFO_VER_AC_INCREMENT);
if (ret) {
gf_msg (this->name, GF_LOG_ERROR, 0,
GD_MSG_RBOP_STATE_STORE_FAIL,
"Couldn't store"
" reset brick operation's state.");
}
} else {
ret = -1;
goto out;
}
out:
return ret;
}
|
