делаю:
lvcreate -L2G -s -n backup -p r /dev/debian/home
mkdir /mnt/d
mount -o ro /dev/debian/backup /mnt/dпоследняя команда выдает:
mount /dev/mapper/debian-backup already mounted or /mnt/d busy
все отрабатывает нормально, только поледнее :(
результат mount:
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,relatime,size=10240k,nr_inodes=126822,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=102708k,mode=755)
/dev/mapper/debian-root on / type ext4 (rw,relatime,errors=remount-ro,user_xattr,barrier=1,data=ordered)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /run/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=205400k)
/dev/vda1 on /boot type ext2 (rw,relatime,errors=continue)
/dev/mapper/debian-home on /home type btrfs (rw,relatime,space_cache)
rpc_pipefs on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime)