LVM XFS增加硬盘分区容量(resize2fs: Bad magic number in super-block while) 给某个硬盘增加分区之后 [root@Mysql01-213-66 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_mysql0121366-LogVol02 7.7G 2.6G 4.8G 36% / tmpfs 495M 0 495M 0% /dev/shm /dev/sda1 194M 29M 155M 16% /boot /dev/mapper/vg_mysql0121366-LogVol01 8.0G 3.1G 5.0G 38% /data 这里增加/data大小 [root@Mysql01-213-66 ~]# fdisk -l /dev/sda Disk /dev/sda: 40.8 GB, 40802189312 bytes 255 heads, 63 sectors/track, 4960 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000eb81f Device Boot Start End Blocks Id System /dev/sda1 * 1 26 204800 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 26 2350 18668544 8e Linux LVM 进行分区 [root@Mysql01-213-66 ~]# fdisk /dev/sda WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 3 First cylinder (2350-4960, default 2350): Using default value 2350 Last cylinder, +cylinders or +size{K,M,G} (2350-4960, default 4960): Using default value 4960 Command (m for help): p Disk /dev/sda: 40.8 GB, 40802189312 bytes 255 heads, 63 sectors/track, 4960 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000eb81f Device Boot Start End Blocks Id System /dev/sda1 * 1 26 204800 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 26 2350 18668544 8e Linux LVM /dev/sda3 2350 4960 20966832 83 Linux Command (m for help): t Partition number (1-4): 3 Hex code (type L to list codes): 8e Changed system type of partition 3 to 8e (Linux LVM) Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 16: Device or resource busy. The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8) Syncing disks. 重启服务器或者 partprobe 创建物理卷 [root@Mysql01-213-66 ~]# pvcreate /dev/sda3 Physical volume "/dev/sda3" successfully created 使用vgscan查询物理卷 [root@Mysql01-213-66 ~]# vgscan Reading all physical volumes. This may take a while... Found volume group "vg_mysql0121366" using metadata type lvm2 使用新增物理卷扩展vg [root@Mysql01-213-66 ~]# vgextend vg_mysql0121366 /dev/sda3 Volume group "vg_mysql0121366" successfully extended [root@Mysql01-213-66 ~]# vgscan Reading all physical volumes. This may take a while... Found volume group "vg_mysql0121366" using metadata type lvm2 查询vg [root@Mysql01-213-66 ~]# vgdisplay --- Volume group --- VG Name vg_mysql0121366 System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 3 Open LV 3 Max PV 0 Cur PV 2 Act PV 2 VG Size 37.79 GiB PE Size 4.00 MiB Total PE 9675 Alloc PE / Size 4557 / 17.80 GiB Free PE / Size 5118 / 19.99 GiB VG UUID Zy2PVv-xSsx-NEAv-L6ba-G8Oy-tBBq-5zXKQm 查询lv [root@Mysql01-213-66 ~]# lvdisplay --- Logical volume --- LV Path /dev/vg_mysql0121366/LogVol01 LV Name LogVol01 VG Name vg_mysql0121366 LV UUID 5znkJ2-wdeZ-Y2o1-ECDS-gzzl-PqaS-qo2yZR LV Write Access read/write LV Creation host, time Mysql01-213-66, 2015-08-30 20:42:13 +0800 LV Status available # open 1 LV Size 8.00 GiB Current LE 2048 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:2 --- Logical volume --- LV Path /dev/vg_mysql0121366/LogVol00 LV Name LogVol00 VG Name vg_mysql0121366 LV UUID b1FV1n-iKyK-kZ23-glRO-opFh-gDRp-TzWNcL LV Write Access read/write LV Creation host, time Mysql01-213-66, 2015-08-30 20:42:14 +0800 LV Status available # open 1 LV Size 2.00 GiB Current LE 512 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Path /dev/vg_mysql0121366/LogVol02 LV Name LogVol02 VG Name vg_mysql0121366 LV UUID eoVdk3-cbcP-9PlI-kZBL-6pY2-Jpbl-1WI2uH LV Write Access read/write LV Creation host, time Mysql01-213-66, 2015-08-30 20:42:14 +0800 LV Status available # open 1 LV Size 7.80 GiB Current LE 1997 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1 [root@Mysql01-213-66 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_mysql0121366-LogVol02 7.7G 2.6G 4.8G 35% / tmpfs 495M 0 495M 0% /dev/shm /dev/sda1 194M 29M 155M 16% /boot /dev/mapper/vg_mysql0121366-LogVol01 8.0G 3.1G 5.0G 38% /data 扩展lv [root@Mysql01-213-66 ~]# lvextend -L +19G /dev/mapper/vg_mysql0121366-LogVol01 Extending logical volume LogVol01 to 27.00 GiB Logical volume LogVol01 successfully resized [root@Mysql01-213-66 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_mysql0121366-LogVol02 7.7G 2.6G 4.8G 35% / tmpfs 495M 0 495M 0% /dev/shm /dev/sda1 194M 29M 155M 16% /boot /dev/mapper/vg_mysql0121366-LogVol01 8.0G 3.1G 5.0G 38% /data 若不是xfs我们可以用resize2fs，这里报错了 [root@Mysql01-213-66 ~]# resize2fs -f /dev/mapper/vg_mysql0121366-LogVol01 resize2fs 1.41.12 (17-May-2010) resize2fs: Bad magic number in super-block while trying to open /dev/mapper/vg_mysql0121366-LogVol01 Couldn't find valid filesystem superblock. [root@Mysql01-213-66 ~]# xfs_growfs /dev/mapper/vg_mysql0121366-LogVol01 meta-data=/dev/mapper/vg_mysql0121366-LogVol01 isize=256 agcount=4, agsize=524288 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=4096 blocks=2097152, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal bsize=4096 blocks=2560, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 data blocks changed from 2097152 to 7077888 [root@Mysql01-213-66 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_mysql0121366-LogVol02 7.7G 2.6G 4.8G 35% / tmpfs 495M 0 495M 0% /dev/shm /dev/sda1 194M 29M 155M 16% /boot /dev/mapper/vg_mysql0121366-LogVol01 27G 3.1G 24G 12% /data