Fedora Linux 39
6.6.6-200.fc39.x86_64

temp vg01 -wi-a----- <11.37t

/dev/mapper/vg01-temp   12T  2.5T  8.4T  23% /mnt

lvresize -r -L5T /dev/vg01/temp
File system ext4 found on vg01/temp.
File system size (<11.37 TiB) is larger than the requested size (1.00 TiB).
File system reduce is required using resize2fs.
File system fsck will be run before reduce.
Reducing file system ext4 to 1.00 TiB (1099511627776 bytes) on vg01/temp...
e2fsck /dev/vg01/temp
/dev/vg01/temp: 14/381480960 files (0.0% non-contiguous), 679430522/3051815936 blocks
e2fsck done
resize2fs /dev/vg01/temp 1073741824k
resize2fs 1.47.0 (5-Feb-2023)
resize2fs: New size smaller than minimum (663495623)

resize2fs failed
File system reduce failed.
Failed to reduce file system with lvresize_fs_helper.

[root@storage ~]# e2fsck -fy /dev/vg01/temp
e2fsck 1.47.0 (5-Feb-2023)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/vg01/temp: 14/381480960 files (0.0% non-contiguous), 679430522/3051815936 blocks

[root@storage ~]# resize2fs /dev/vg01/temp 5T
resize2fs 1.47.0 (5-Feb-2023)
Resizing the filesystem on /dev/vg01/temp to 1342177280 (4k) blocks.
The filesystem on /dev/vg01/temp is now 1342177280 (4k) blocks long.

mount /dev/vg01/temp /mnt/; df -h | grep mnt
/dev/mapper/vg01-temp  5.0T  2.5T  2.4T  52% /mnt - ФС уменьшилась

[root@storage ~]# lvreduce -L -5T /dev/vg01/temp
File system ext4 found on vg01/temp.
File system size (5.00 TiB) is larger than the requested size (377.75 GiB).
File system reduce is required (see resize2fs or --resizefs.)

[root@storage ~]# lvreduce -l -1000000 /dev/vg01/temp
File system ext4 found on vg01/temp.
File system size (5.00 TiB) is larger than the requested size (1.55 TiB).
File system reduce is required (see resize2fs or --resizefs.)

UNIT represents other possible input units: b|B is bytes, s|S is sectors of 512 bytes, k|K is KiB, m|M is MiB, g|G is GiB, t|T is TiB, p|P is PiB, e|E is EiB.

/dev/mapper/vg01-ringbackup  7.0T  2.5T  4.6T  35% /ringback
ringbackup  vg01 -wi-a-----   7.00t

 lvresize -r -L5T /dev/vg01/ringbackup
fsck from util-linux 2.23.2
/dev/mapper/vg01-ringbackup: 112744/234881024 files (34.4% non-contiguous), 666628760/1879048192 blocks
resize2fs 1.42.9 (28-Dec-2013)
Resizing the filesystem on /dev/mapper/vg01-ringbackup to 1342177280 (4k) blocks.
The filesystem on /dev/mapper/vg01-ringbackup is now 1342177280 blocks long.

  Size of logical volume vg01/ringbackup changed from 7.00 TiB (1835008 extents) to 5.00 TiB (1310720 extents).
  Logical volume vg01/ringbackup successfully resized.

 ringbackup  vg01 -wi-a-----   5.00t
/dev/mapper/vg01-ringbackup  5.0T  2.5T  2.6T  49% /ringback

HOSTS=$(cat << EOF
host1 #допустим это имя локалхоста
host2
host3
EOF
)

LOCALHOST=$(hostname | cut -d . -f 1)

for host in $HOSTS
do


     if [[ $host = $LOCALHOST ]]
        then
             host_local=$(command)
        else
            host_remote=$(command)
      fi
done

$host1_local
$host2_remote
$host3_remote

while read line
do
var=`ssh user@host 'command'`
echo $line
done < /home/file