vgchange -aay: optimize device list using pvs_online files

Port another optimization from pvscan -aay to vgchange -aay:
  "pvscan: only add device args to dev cache"

This optimization avoids doing a full dev_cache_scan, and
instead populates dev-cache with only the devices in the
VG being activated.

This involves shifting the use of pvs_online files from
the hints interface up to the higher level label_scan
interface.  This specialized label_scan is structured
around creating a list of devices from the pvs_online
files.  Previously, a list of all devices was created
first, and then reduced based on the pvs_online files.
The initial step of listing all devices was slow when
thousands of devices are present on the system.

This optimization extends the previous optimization that
used pvs_online files to limit the devices that were
actually scanned (i.e. reading to identify the device):
  "vgchange -aay: optimize device scan using pvs_online files"

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/pvscan.c b/tools/pvscan.c
index c1f7fbe6d..6fd86e486 100644
--- a/tools/pvscan.c
+++ b/tools/pvscan.c
@@ -1378,7 +1378,7 @@ static int _pvscan_cache_args(struct cmd_context *cmd, int argc, char **argv,
 	 * Does not do dev_cache_scan (adds nothing to dev-cache), and
 	 * does not do any device id matching.
 	 */
-	if (!setup_devices_for_pvscan_cache(cmd)) {
+	if (!setup_devices_for_online_autoactivation(cmd)) {
 		log_error_pvscan(cmd, "Failed to set up devices.");
 		return 0;
 	}