git.rot13.org Git - gnt-info/blob - rbd-snap-backup.sh

   1 #!/bin/sh -xe
   2
   3 test -z "$1" -o -z "$2" && echo "Usage: $0 instance disk" && exit 1
   4
   5 instance=$1
   6 disk=$2
   7 test -z "$backup" && backup="backup"
   8
   9 rbd_image=`gnt-instance info --static $instance | grep logical_id: | cut -d\' -f4 | grep "\.rbd\.disk$disk\$"`
  10
  11 test -z "$rbd_image" && echo "can't find rbd_image name for $instance $disk" && exit 1
  12
  13 rbd snap add     $rbd_image@backup
  14 rbd snap protect $rbd_image@backup
  15
  16 rbd clone        $rbd_image@backup backup-$instance-$disk
  17
  18 rbd_dev=`rbd map backup-$instance-$disk`
  19
  20 test -d /dev/shm/$rbd_image.snap || mkdir /dev/shm/$rbd_image.snap
  21
  22 # we must mount filesystem read-write to allow journal recovery
  23 offset=`fdisk -l $rbd_dev -u -o Device,Start,Type | grep 'Linux$' | grep $rbd_dev | head -1 | sed 's/\*/ /' | awk '{ print \$2 * 512 }'`
  24 test ! -z "$offset" && offset=",offset=$offset"
  25 mount $rbd_dev /dev/shm/$rbd_image.snap -o noatime$offset
  26
  27
  28 # XXX do rsync back to lib15
  29
  30 rsync_args=""
  31 if rsync lib15::$backup/$instance/rsync.args /dev/shm/$instance-rsync.args 2>/dev/null ; then
  32         rsync_args="`cat /dev/shm/$instance-rsync.args`"
  33 fi
  34
  35 rsync -ravHzXA --inplace --numeric-ids --delete $rsync_args \
  36         /dev/shm/$rbd_image.snap/ lib15::$backup/$instance/$disk/ \
  37 && ssh -i /root/.ssh/id_dsa-zfs lib15 lib15/$backup/$instance/$disk
  38
  39 # XXX backup OK
  40
  41
  42
  43 umount /dev/shm/$rbd_image.snap
  44
  45 rbd unmap backup-$instance-$disk
  46 rbd rm    backup-$instance-$disk
  47
  48 rbd snap unprotect $rbd_image@backup
  49 rbd snap rm        $rbd_image@backup
  50
  51 rmdir /dev/shm/$rbd_image.snap
  52