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Code Releases Activity

mirror log stuff

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This commit is contained in:
Alasdair Kergon 2008-01-17 13:37:51 +00:00
parent 5cf3c51857
commit 58a63ae973
1 changed files with 40 additions and 7 deletions
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47
lib/metadata/mirror.c
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@ -192,9 +192,12 @@ static int _write_log_header(struct cmd_context *cmd, struct logical_volume *lv)
*/
static int _init_mirror_log(struct cmd_context *cmd,
struct logical_volume *log_lv, int in_sync,
struct list *tags)
struct list *tags, int remove_on_failure)
{
struct str_list *sl;
struct lvinfo info;
uint32_t orig_status = log_lv->status;
int was_active = 0;
if (!activation() && in_sync) {
log_error("Aborting. Unable to create in-sync mirror log "
@ -202,21 +205,31 @@ static int _init_mirror_log(struct cmd_context *cmd,
return 0;
}
/* If the LV is active, deactivate it first. */
if (lv_info(cmd, log_lv, &info, 0, 0) && info.exists) {
if (!deactivate_lv(cmd, log_lv))
return_0;
was_active = 1;
}
/* Temporary make it visible for set_lv() */
log_lv->status |= VISIBLE_LV;
/* Temporary tag mirror log for activation */
list_iterate_items(sl, tags)
if (!str_list_add(cmd->mem, &log_lv->tags, sl->str)) {
log_error("Aborting. Unable to tag mirror log.");
return 0;
goto activate_lv;
}
/* store mirror log on disk(s) */
if (!vg_write(log_lv->vg))
return_0;
goto activate_lv;
backup(log_lv->vg);
if (!vg_commit(log_lv->vg))
return_0;
goto activate_lv;
if (!activate_lv(cmd, log_lv)) {
log_error("Aborting. Failed to activate mirror log.");
@ -248,6 +261,9 @@ static int _init_mirror_log(struct cmd_context *cmd,
log_lv->status &= ~VISIBLE_LV;
if (was_active && !activate_lv(cmd, log_lv))
return_0;
return 1;
deactivate_and_revert_new_lv:
@ -258,10 +274,27 @@ deactivate_and_revert_new_lv:
}
revert_new_lv:
if (!lv_remove(log_lv) || !vg_write(log_lv->vg) ||
(backup(log_lv->vg), !vg_commit(log_lv->vg)))
log_lv->status = orig_status;
list_iterate_items(sl, tags)
if (!str_list_del(&log_lv->tags, sl->str))
log_error("Failed to remove tag %s from mirror log.",
sl->str);
if (remove_on_failure && !lv_remove(log_lv)) {
log_error("Manual intervention may be required to remove "
"abandoned log LV before retrying.");
return 0;
}
if (!vg_write(log_lv->vg) ||
(backup(log_lv->vg), !vg_commit(log_lv->vg)))
log_error("Manual intervention may be required to "
"remove/restore abandoned log LV before retrying.");
activate_lv:
if (was_active && !remove_on_failure && !activate_lv(cmd, log_lv))
return_0;
return 0;
}
@ -1199,7 +1232,7 @@ static struct logical_volume *_set_up_mirror_log(struct cmd_context *cmd,
return NULL;
}
if (!_init_mirror_log(cmd, log_lv, in_sync, &lv->tags)) {
if (!_init_mirror_log(cmd, log_lv, in_sync, &lv->tags, 1)) {
log_error("Failed to create mirror log.");
return NULL;
}