lvm2/test/shell/vgchange-many.sh

#!/bin/sh
# Copyright (C) 2013 Red Hat, Inc. All rights reserved.
#
# This copyrighted material is made available to anyone wishing to use,
# modify, copy, or redistribute it subject to the terms and conditions
# of the GNU General Public License v.2.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

# Check perfomance of activation and deactivation
. lib/inittest

# FIXME: lvmetad fails with i.e. 1500 device on memory failure...

# Number of LVs to create
DEVICES=1000

aux prepare_pvs 1 400

vgcreate -s 128K $vg $(cat DEVICES)

vgcfgbackup -f data $vg

# Generate a lot of devices (size of 1 extent)
awk -v DEVICES=$DEVICES '/^\t\}/ { \
    printf("\t}\n\tlogical_volumes {\n");\
    cnt=0;
    for (i = 0; i < DEVICES; i++) { \
	printf("\t\tlvol%06d  {\n", i);\
	printf("\t\t\tid = \"%06d-1111-2222-3333-2222-1111-%06d\"\n", i, i); \
	print "\t\t\tstatus = [\"READ\", \"WRITE\", \"VISIBLE\"]"; \
	print "\t\t\tsegment_count = 1"; \
	print "\t\t\tsegment1 {"; \
	print "\t\t\t\tstart_extent = 0"; \
	print "\t\t\t\textent_count = 1"; \
	print "\t\t\t\ttype = \"striped\""; \
	print "\t\t\t\tstripe_count = 1"; \
	print "\t\t\t\tstripes = ["; \
	print "\t\t\t\t\t\"pv0\", " cnt++; \
	printf("\t\t\t\t]\n\t\t\t}\n\t\t}\n"); \
      } \
  }
  {print}
' data >data_new

vgcfgrestore -f data_new $vg

# Activate and deactivate all of them
vgchange -ay $vg
vgchange -an $vg