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Use clustered mirror log with pvmove in clustered VGs, if available.

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This commit is contained in:
Alasdair Kergon 2008-04-09 12:56:34 +00:00
parent 178e1df257
commit eb273c7c65
6 changed files with 63 additions and 26 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.34 -
===================================
Use clustered mirror log with pvmove in clustered VGs, if available.
Fix some pvmove error status codes.
Fix vgsplit error paths to release vg_to lock.
Indicate whether or not VG is clustered in vgcreate log message.

10
lib/locking/locking.c
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@ -412,19 +412,23 @@ int suspend_lvs(struct cmd_context *cmd, struct list *lvs)
}
/* Lock a list of LVs */
int activate_lvs_excl(struct cmd_context *cmd, struct list *lvs)
int activate_lvs(struct cmd_context *cmd, struct list *lvs, unsigned exclusive)
{
struct list *lvh;
struct lv_list *lvl;
list_iterate_items(lvl, lvs) {
if (!activate_lv_excl(cmd, lvl->lv)) {
if (!exclusive) {
if (!activate_lv(cmd, lvl->lv)) {
log_error("Failed to activate %s", lvl->lv->name);
return 0;
}
} else if (!activate_lv_excl(cmd, lvl->lv)) {
log_error("Failed to activate %s", lvl->lv->name);
list_uniterate(lvh, lvs, &lvl->list) {
lvl = list_item(lvh, struct lv_list);
activate_lv(cmd, lvl->lv);
}
return 0;
}
}

2
lib/locking/locking.h
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@ -120,7 +120,7 @@ int check_lvm1_vg_inactive(struct cmd_context *cmd, const char *vgname);
/* Process list of LVs */
int suspend_lvs(struct cmd_context *cmd, struct list *lvs);
int resume_lvs(struct cmd_context *cmd, struct list *lvs);
int activate_lvs_excl(struct cmd_context *cmd, struct list *lvs);
int activate_lvs(struct cmd_context *cmd, struct list *lvs, unsigned exclusive);
/* Interrupt handling */
void sigint_clear(void);

2
tools/lvconvert.c
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@ -258,7 +258,7 @@ static int _update_lvconvert_mirror(struct cmd_context *cmd __attribute((unused)
struct volume_group *vg __attribute((unused)),
struct logical_volume *lv __attribute((unused)),
struct list *lvs_changed __attribute((unused)),
int first_time __attribute((unused)))
unsigned flags __attribute((unused)))
{
/* lvconvert mirror doesn't require periodical metadata update */
return 1;

2
tools/polldaemon.h
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@ -29,7 +29,7 @@ struct poll_functions {
int (*update_metadata) (struct cmd_context *cmd,
struct volume_group *vg,
struct logical_volume *lv_mirr,
struct list *lvs_changed, int first_time);
struct list *lvs_changed, unsigned flags);
int (*finish_copy) (struct cmd_context *cmd,
struct volume_group *vg,
struct logical_volume *lv_mirr,

72
tools/pvmove.c
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@ -17,28 +17,43 @@
#include "polldaemon.h"
#include "display.h"
static int pvmove_target_present(struct cmd_context *cmd, int clustered)
#define PVMOVE_FIRST_TIME 0x00000001 /* Called for first time */
static int _pvmove_target_present(struct cmd_context *cmd, int clustered)
{
const struct segment_type *segtype;
unsigned attr = 0;
int found = 1;
static int _clustered_found = -1;
if (clustered && _clustered_found >= 0)
return _clustered_found;
if (!(segtype = get_segtype_from_string(cmd, "mirror")))
return_0;
if (activation() && segtype->ops->target_present &&
!segtype->ops->target_present(NULL, clustered ? &attr : NULL)) {
log_error("%s: Required device-mapper target(s) not "
"detected in your kernel", segtype->name);
return 0;
!segtype->ops->target_present(NULL, clustered ? &attr : NULL))
found = 0;
if (activation() && clustered) {
if (found && (attr & MIRROR_LOG_CLUSTERED))
_clustered_found = found = 1;
else
_clustered_found = found = 0;
}
if (clustered && !(attr & MIRROR_LOG_CLUSTERED)) {
log_error("%s: Required device-mapper clustered log "
"module not detected in your kernel", segtype->name);
return 0;
}
return found;
}
return 1;
static unsigned _pvmove_is_exclusive(struct cmd_context *cmd,
struct volume_group *vg)
{
if (vg_status(vg) & CLUSTERED)
if (!_pvmove_target_present(cmd, 1))
return 1;
return 0;
}
/* Allow /dev/vgname/lvname, vgname/lvname or lvname */
@ -250,10 +265,22 @@ static struct logical_volume *_set_up_pvmove_lv(struct cmd_context *cmd,
return lv_mirr;
}
static int _activate_lv(struct cmd_context *cmd, struct logical_volume *lv_mirr,
unsigned exclusive)
{
if (exclusive)
return activate_lv_excl(cmd, lv_mirr);
return activate_lv(cmd, lv_mirr);
}
static int _update_metadata(struct cmd_context *cmd, struct volume_group *vg,
struct logical_volume *lv_mirr,
struct list *lvs_changed, int first_time)
struct list *lvs_changed, unsigned flags)
{
unsigned exclusive = _pvmove_is_exclusive(cmd, vg);
unsigned first_time = (flags & PVMOVE_FIRST_TIME) ? 1 : 0;
log_verbose("Updating volume group metadata");
if (!vg_write(vg)) {
log_error("ABORTING: Volume group metadata update failed.");
@ -289,7 +316,7 @@ static int _update_metadata(struct cmd_context *cmd, struct volume_group *vg,
/* Only the first mirror segment gets activated as a mirror */
/* FIXME: Add option to use a log */
if (first_time) {
if (!activate_lv_excl(cmd, lv_mirr)) {
if (!_activate_lv(cmd, lv_mirr, exclusive)) {
if (!test_mode())
log_error("ABORTING: Temporary mirror "
"activation failed. "
@ -326,7 +353,8 @@ static int _set_up_pvmove(struct cmd_context *cmd, const char *pv_name,
struct list *lvs_changed;
struct physical_volume *pv;
struct logical_volume *lv_mirr;
int first_time = 1;
unsigned first_time = 1;
unsigned exclusive;
pv_name_arg = argv[0];
argc--;
@ -359,6 +387,8 @@ static int _set_up_pvmove(struct cmd_context *cmd, const char *pv_name,
return ECMD_FAILED;
}
exclusive = _pvmove_is_exclusive(cmd, vg);
if ((lv_mirr = find_pvmove_lv(vg, pv_dev(pv), PVMOVE))) {
log_print("Detected pvmove in progress for %s", pv_name);
if (argc || lv_name)
@ -372,7 +402,7 @@ static int _set_up_pvmove(struct cmd_context *cmd, const char *pv_name,
}
/* Ensure mirror LV is active */
if (!activate_lv_excl(cmd, lv_mirr)) {
if (!_activate_lv(cmd, lv_mirr, exclusive)) {
log_error
("ABORTING: Temporary mirror activation failed.");
unlock_vg(cmd, pv_vg_name(pv));
@ -416,8 +446,8 @@ static int _set_up_pvmove(struct cmd_context *cmd, const char *pv_name,
}
}
/* Lock lvs_changed for exclusive use and activate (with old metadata) */
if (!activate_lvs_excl(cmd, lvs_changed)) {
/* Lock lvs_changed and activate (with old metadata) */
if (!activate_lvs(cmd, lvs_changed, exclusive)) {
stack;
unlock_vg(cmd, pv_vg_name(pv));
return ECMD_FAILED;
@ -429,7 +459,7 @@ static int _set_up_pvmove(struct cmd_context *cmd, const char *pv_name,
if (first_time) {
if (!_update_metadata
(cmd, vg, lv_mirr, lvs_changed, first_time)) {
(cmd, vg, lv_mirr, lvs_changed, PVMOVE_FIRST_TIME)) {
stack;
unlock_vg(cmd, pv_vg_name(pv));
return ECMD_FAILED;
@ -565,8 +595,10 @@ int pvmove(struct cmd_context *cmd, int argc, char **argv)
char *colon;
int ret;
if (!pvmove_target_present(cmd, 0)) {
stack;
/* dm raid1 target must be present in every case */
if (!_pvmove_target_present(cmd, 0)) {
log_error("Required device-mapper target(s) not "
"detected in your kernel");
return ECMD_FAILED;
}