Linux格式化磁盘
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2022-07-14 23:41:01
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具体操作步骤如下：
[[email protected] code]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda 252:0 0 100G 0 disk
├─vda1 252:1 0 500M 0 part /boot
├─vda2 252:2 0 20G 0 part [SWAP]
└─vda3 252:3 0 79.5G 0 part
└─VolGroup-LogVol00 (dm-0) 253:0 0 79.5G 0 lvm /
vdb 252:16 0 300G 0 disk
[[email protected] code]# fdisk /dev/vdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0x76ee3922.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
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): p
Disk /dev/vdb: 322.1 GB, 322122547200 bytes
16 heads, 63 sectors/track, 624152 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x76ee3922
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-624152, default 1): 1
Last cylinder, +cylinders or +size{K,M,G} (1-624152, default 624152): 1
Command (m for help): p
Disk /dev/vdb: 322.1 GB, 322122547200 bytes
16 heads, 63 sectors/track, 624152 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x76ee3922
Device Boot Start End Blocks Id System
/dev/vdb1 1 1 472+ 83 Linux
Command (m for help): d
Selected partition 1
Command (m for help): p
Disk /dev/vdb: 322.1 GB, 322122547200 bytes
16 heads, 63 sectors/track, 624152 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x76ee3922
Device Boot Start End Blocks Id System
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-624152, default 1): 1
Last cylinder, +cylinders or +size{K,M,G} (1-624152, default 624152): 624152
Command (m for help): p
Disk /dev/vdb: 322.1 GB, 322122547200 bytes
16 heads, 63 sectors/track, 624152 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x76ee3922
Device Boot Start End Blocks Id System
/dev/vdb1 1 624152 314572576+ 83 Linux
Command (m for help): t
Selected partition 1
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help): p
Disk /dev/vdb: 322.1 GB, 322122547200 bytes
16 heads, 63 sectors/track, 624152 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x76ee3922
Device Boot Start End Blocks Id System
/dev/vdb1 1 624152 314572576+ 8e Linux LVM
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[[email protected] code]# pvcreate /dev/vdb1
Physical volume "/dev/vdb1" successfully created
[[email protected] code]# pvs
PV VG Fmt Attr PSize PFree
/dev/vda3 VolGroup lvm2 a--u 79.51g 0
/dev/vdb1 lvm2 ---- 300.00g 300.00g
[[email protected] code]# vgcreate vg_data /dev/vdb1
Volume group "vg_data" successfully created
[[email protected] code]# vgs
VG #PV #LV #SN Attr VSize VFree
VolGroup 1 1 0 wz--n- 79.51g 0
vg_data 1 0 0 wz--n- 300.00g 300.00g
[[email protected] code]# lvcreate -L 300G -n lv_data vg_data
Volume group "vg_data" has insufficient free space (76799 extents): 76800 required.
[[email protected] code]# lvcreate -l 76799 -n lv_data vg_data
Logical volume "lv_data" created.
[[email protected] code]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
LogVol00 VolGroup -wi-ao---- 79.51g
lv_data vg_data -wi-a----- 300.00g
[[email protected] code]# mkfs -t ext3
Usage: mkfs [-V] [-t fstype] [fs-options] device [size]
[[email protected] code]# mkfs -t ext3 /dev/vg_data/lv_data
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
19660800 inodes, 78642176 blocks
3932108 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
2400 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616
Writing inode tables: done
Creating journal (32768 blocks): done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 33 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[[email protected] code]# mkdir /data
[[email protected] code]# mount /dev/vg_data/lv_data /data/
[[email protected] code]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-LogVol00
79G 65G 9.6G 88% /
tmpfs 7.8G 800K 7.8G 1% /dev/shm
/dev/vda1 477M 64M 388M 15% /boot
/dev/mapper/vg_data-lv_data
296G 191M 281G 1% /data