请欧比万,你是我唯一的希望.

尺寸中的-1最初是1000000000,所以我尝试改为-1但是没有区别.

d-i partman-lvm/device_remove_lvm boolean true
d-i partman-md/device_remove_md boolean true
d-i partman-auto/purge_lvm_from_device boolean true

d-i partman-auto/disk string /dev/sda /dev/sdb
d-i partman-auto/method string raid

d-i partman-auto-lvm/new_vg_name string vg_sys
d-i partman-auto-lvm/guided_size string max

d-i partman-auto/choose_recipe select raid-lvm
d-i partman-auto/expert_recipe string                      \
      raid-lvm ::                                          \
        512 10 512 raid                                    \
          $primary{ } $lvmignore{ } $bootable{ }           \
          method{ raid }                                   \
        .                                                  \
        8192 20 -1 raid                                    \
          $primary{ } $lvmignore{ }                        \
          method{ raid }                                   \
        .                                                  \
        1024 100 1024 ext4                                 \
          $defaultignore $lvmok{ } lv_name{ root }         \
          method{ format } format{ }                       \
          use_filesystem{ } filesystem{ ext4 }             \
          mountpoint{ / }                                  \
        .                                                  \
        4096 100 4096 linux-swap                           \
          $defaultignore $lvmok{ } lv_name{ swap }         \
          method{ swap } format{ }                         \
        .                                                  \
        1024 100 2048 ext4                                 \
          $defaultignore $lvmok{ } lv_name{ tmp }          \
          method{ format } format{ }                       \
          use_filesystem{ } filesystem{ ext4 }             \
          mountpoint{ /tmp }                               \
        .                                                  \
        4096 100 8192 ext4                                 \
          $defaultignore $lvmok{ } lv_name{ var }          \
          method{ format } format{ }                       \
          use_filesystem{ } filesystem{ ext4 }             \
          mountpoint{ /var }                               \
        .                                                  \
        2048 100 4096 ext4                                 \
          $defaultignore $lvmok{ } lv_name{ usr }          \
          method{ format } format{ }                       \
          use_filesystem{ } filesystem{ ext4 }             \
          mountpoint{ /usr }                               \
        .                                                  \
        2048 110 16384 ext4                                \
          $defaultignore $lvmok{ } lv_name{ home }         \
          method{ format } format{ }                       \
          use_filesystem{ } filesystem{ ext4 }             \
          mountpoint{ /home }                              \
        .                                                  \
        512 1000 -1 ext4                                   \
          $defaultignore $lvmok{ } lv_name{ deleteme }     \
          method{ lvm }                                    \
        .

d-i partman-auto-raid/recipe string                              \
    1 2 0 ext4 /boot  /dev/sda1#/dev/sdb1                    .   \
    1 2 0 lvm  -      /dev/sda2#/dev/sdb2                    .

# the 'deleteme' LV soaks up the leftover space in the VG
d-i preseed/late_command string in-target lvremove -f vg_sys/deleteme

d-i partman-partitioning/confirm_write_new_label boolean true
d-i partman/choose_partition select finish

d-i partman/confirm boolean true
d-i partman/confirm_nooverwrite boolean true
d-i partman-lvm/confirm boolean true
d-i partman-md/confirm boolean true
d-i partman-md/confirm_nooverwrite  boolean true

d-i partman/mount_style select label

d-i mdadm/boot_degraded boolean false

这是我得到的错误：

磁盘是双50GiB(准确地说,53,687,091,200字节).