我在服务器上扩展了300 GB的卷，方法是：
lvextend -l +76800 /dev/vg0/simax lvdisplay --- Logical volume --- LV Path /dev/vg0/simax LV Name simax VG Name vg0 LV UUID v6LxAS-U08H-JfM4-gp34-oQTk-Dlv5-tmuLbs LV Write Access read/write LV Creation host, time thor.tcpmiss.it, 2013-08-08 09:55:57 +0200 LV Status available # open 1 LV Size 495.31 GiB Current LE 126800 Segments 2 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:8 但随后尝试调整fs：
resize2fs /dev/vg0/simax resize2fs 1.42.5 (29-Jul-2012) resize2fs: Bad magic number in super-block while trying to open /dev/vg0/simax Couldn't find valid filesystem superblock.
服务器正在运行debian：
cat /proc/version Linux version 3.16.0-0.bpo.4-amd64 ([email protected]) (gcc version 4.6.3 (Debian 4.6.3-14) ) #1 SMP Debian 3.16.7-ckt11-1~bpo70+1 (2015-06-08)
我不知道该怎么做; 这里是df的输出：
df -Th Filesystem Type Size Used Avail Use% Mounted on rootfs rootfs 3.9G 803M 2.9G 22% / udev devtmpfs 10M 0 10M 0% /dev tmpfs tmpfs 3.2G 308K 3.2G 1% /run /dev/mapper/vg0-dom0_root ext4 3.9G 803M 2.9G 22% / tmpfs tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs tmpfs 6.3G 0 6.3G 0% /run/shm /dev/md0 ext2 496M 121M 350M 26% /boot /dev/mapper/vg0-dom0_usr ext4 4.9G 1.3G 3.3G 28% /usr /dev/mapper/vg0-dom0_tmp ext4 3.9G 8.0M 3.7G 1% /tmp /dev/mapper/vg0-dom0_home ext4 42G 48M 40G 1% /home /dev/mapper/vg0-dom0_var ext4 298G 4.7G 278G 2% /var