LVM XFS增加硬盘分区容量(resize2fs: Bad magic number in super-block while) 2015-09-04 11:28:01 分类： Linux


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