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process_each_label: use lvmcache

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In the same way as the other process_each functions.
In the common case all the info that's needed can be
used from lvmcache after a label scan.  But this means
that unchosen devs for duplicate PVs need to be handled
explicitly.
This commit is contained in:
David Teigland 2018-02-09 11:24:40 -06:00
parent f17c2cf7c6
commit 4343280ebc
1 changed files with 54 additions and 8 deletions
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60
tools/toollib.c
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@ -1493,13 +1493,19 @@ int process_each_label(struct cmd_context *cmd, int argc, char **argv,
struct label *label;
struct dev_iter *iter;
struct device *dev;
struct lvmcache_info *info;
struct dm_list process_duplicates;
struct device_list *devl;
int ret_max = ECMD_PROCESSED;
int ret;
int opt = 0;
dm_list_init(&process_duplicates);
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_LABEL);
lvmcache_label_scan(cmd);
if (argc) {
for (; opt < argc; opt++) {
if (!(dev = dev_cache_get(argv[opt], cmd->full_filter))) {
@ -1509,15 +1515,55 @@ int process_each_label(struct cmd_context *cmd, int argc, char **argv,
continue;
}
log_set_report_object_name_and_id(dev_name(dev), NULL);
if (!label_read(dev, &label, 0)) {
log_error("No physical volume label read from %s.",
argv[opt]);
if (!(label = lvmcache_get_dev_label(dev))) {
if (!lvmcache_dev_is_unchosen_duplicate(dev)) {
log_error("No physical volume label read from %s.", argv[opt]);
ret_max = ECMD_FAILED;
} else {
if (!(devl = dm_malloc(sizeof(*devl))))
return_0;
devl->dev = dev;
dm_list_add(&process_duplicates, &devl->list);
}
continue;
}
log_set_report_object_name_and_id(dev_name(dev), NULL);
ret = process_single_label(cmd, label, handle);
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
log_set_report_object_name_and_id(NULL, NULL);
if (sigint_caught())
break;
}
dm_list_iterate_items(devl, &process_duplicates) {
/*
* remove the existing dev for this pvid from lvmcache
* so that the duplicate dev can replace it.
*/
if ((info = lvmcache_info_from_pvid(devl->dev->pvid, NULL, 0)))
lvmcache_del(info);
/*
* add info to lvmcache from the duplicate dev.
*/
label_read(devl->dev, NULL, 0);
/*
* the info/label should now be found because
* the label_read should have added it.
*/
if (!(label = lvmcache_get_dev_label(devl->dev)))
continue;
log_set_report_object_name_and_id(dev_name(dev), NULL);
ret = process_single_label(cmd, label, handle);
report_log_ret_code(ret);
@ -1541,7 +1587,7 @@ int process_each_label(struct cmd_context *cmd, int argc, char **argv,
while ((dev = dev_iter_get(iter)))
{
if (!label_read(dev, &label, 0))
if (!(label = lvmcache_get_dev_label(dev)))
continue;
log_set_report_object_name_and_id(dev_name(label->dev), NULL);