external/gpl2/lvm2/dist/test/t-pvcreate-operation-md.sh

   1 # Copyright (C) 2009 Red Hat, Inc. All rights reserved.
   2 #
   3 # This copyrighted material is made available to anyone wishing to use,
   4 # modify, copy, or redistribute it subject to the terms and conditions
   5 # of the GNU General Public License v.2.
   6 #
   7 # You should have received a copy of the GNU General Public License
   8 # along with this program; if not, write to the Free Software Foundation,
   9 # Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  10
  11 # skip this test if mdadm or sfdisk (or others) aren't available
  12 which mdadm || exit 200
  13 which sfdisk || exit 200
  14 which perl || exit 200
  15 which awk || exit 200
  16 which cut || exit 200
  17 test -f /proc/mdstat || exit 200
  18
  19 . ./test-utils.sh
  20
  21 prepare_lvmconf '[ "a|/dev/md.*|", "a/dev\/mapper\/.*$/", "r/.*/" ]'
  22 aux prepare_devs 2
  23
  24 # Have MD use a non-standard name to avoid colliding with an existing MD device
  25 # - mdadm >= 3.0 requires that non-standard device names be in /dev/md/
  26 # - newer mdadm _completely_ defers to udev to create the associated device node
  27 mdadm_maj=$(mdadm --version 2>&1 | perl -pi -e 's|.* v(\d+).*|\1|')
  28 [ $mdadm_maj -ge 3 ] && \
  29     mddev=/dev/md/md_lvm_test0 || \
  30     mddev=/dev/md_lvm_test0
  31
  32 cleanup_md() {
  33     # sleeps offer hack to defeat: 'md: md127 still in use'
  34     # see: https://bugzilla.redhat.com/show_bug.cgi?id=509908#c25
  35     sleep 2
  36     mdadm --stop $mddev
  37     if [ -b "$mddev" ]; then
  38         # mdadm doesn't always cleanup the device node
  39         sleep 2
  40         rm -f $mddev
  41     fi
  42     teardown_
  43 }
  44
  45 # create 2 disk MD raid0 array (stripe_width=128K)
  46 [ -b "$mddev" ] && exit 200
  47 mdadm --create $mddev --auto=md --level 0 --raid-devices=2 --chunk 64 $dev1 $dev2
  48 trap 'aux cleanup_md' EXIT # cleanup this MD device at the end of the test
  49
  50 # Test alignment of PV on MD without any MD-aware or topology-aware detection
  51 # - should treat $mddev just like any other block device
  52 pv_align="192.00k"
  53 pvcreate --metadatasize 128k \
  54     --config 'devices {md_chunk_alignment=0 data_alignment_detection=0 data_alignment_offset_detection=0}' \
  55     $mddev
  56 check_pv_field_ $mddev pe_start $pv_align
  57
  58 # Test md_chunk_alignment independent of topology-aware detection
  59 pv_align="256.00k"
  60 pvcreate --metadatasize 128k \
  61     --config 'devices {data_alignment_detection=0 data_alignment_offset_detection=0}' \
  62     $mddev
  63 check_pv_field_ $mddev pe_start $pv_align
  64
  65 # Get linux minor version
  66 linux_minor=$(echo `uname -r` | cut -d'.' -f3 | cut -d'-' -f1)
  67
  68 # Test newer topology-aware alignment detection
  69 if [ $linux_minor -gt 31 ]; then
  70     pv_align="256.00k"
  71     pvcreate --metadatasize 128k \
  72         --config 'devices { md_chunk_alignment=0 }' $mddev
  73     check_pv_field_ $mddev pe_start $pv_align
  74 fi
  75
  76 # partition MD array directly, depends on blkext in Linux >= 2.6.28
  77 if [ $linux_minor -gt 27 ]; then
  78     # create one partition
  79     sfdisk $mddev <<EOF
  80 ,,83
  81 EOF
  82     # make sure partition on MD is _not_ removed
  83     # - tests partition -> parent lookup via sysfs paths
  84     not pvcreate --metadatasize 128k $mddev
  85
  86     # verify alignment_offset is accounted for in pe_start
  87     # - topology infrastructure is available in Linux >= 2.6.31
  88     # - also tests partition -> parent lookup via sysfs paths
  89
  90     # Oh joy: need to lookup /sys/block/md127 rather than /sys/block/md_lvm_test0
  91     mddev_maj_min=$(ls -lL $mddev | awk '{ print $5 $6 }' | perl -pi -e 's|,|:|')
  92     mddev_p_sysfs_name=$(echo /sys/dev/block/${mddev_maj_min}/*p1)
  93     base_mddev_p=`basename $mddev_p_sysfs_name`
  94     mddev_p=/dev/${base_mddev_p}
  95
  96     # Checking for 'alignment_offset' in sysfs implies Linux >= 2.6.31
  97     sysfs_alignment_offset=/sys/dev/block/${mddev_maj_min}/${base_mddev_p}/alignment_offset
  98     [ -f $sysfs_alignment_offset ] && \
  99         alignment_offset=`cat $sysfs_alignment_offset` || \
 100         alignment_offset=0
 101
 102     if [ "$alignment_offset" = "512" ]; then
 103         pv_align="256.50k"
 104         pvcreate --metadatasize 128k $mddev_p
 105         check_pv_field_ $mddev_p pe_start $pv_align
 106         pvremove $mddev_p
 107     elif [ "$alignment_offset" = "2048" ]; then
 108         pv_align="258.00k"
 109         pvcreate --metadatasize 128k $mddev_p
 110         check_pv_field_ $mddev_p pe_start $pv_align
 111         pvremove $mddev_p
 112     fi
 113 fi