[root@rhel ~]# fdisk -l
Disk /dev/sda: 21.5 GB, 21474836480 bytes
255 heads, 63 sectors/track, 2610 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: 0x0001a205
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 102400 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 13 274 2097152 82 Linux swap / Solaris
Partition 2 does not end on cylinder boundary.
/dev/sda3 274 2611 18770944 83 Linux
Disk /dev/sdb: 85.9 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 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: 0x00000000
Disk /dev/sdc: 85.9 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 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: 0x00000000
[root@rhel ~]# pvscan
No matching physical volumes found
[root@rhel ~]# fdisk /dev/sdb
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xcef106d2.
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): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-10443, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-10443, default 10443): +20000M
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (2552-10443, default 2552):
Using default value 2552
Last cylinder, +cylinders or +size{K,M,G} (2552-10443, default 10443): +20000M
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 3
First cylinder (5103-10443, default 5103):
Using default value 5103
Last cylinder, +cylinders or +size{K,M,G} (5103-10443, default 10443): +20000M
Command (m for help): p
Disk /dev/sdb: 85.9 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 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: 0xcef106d2
Device Boot Start End Blocks Id System
/dev/sdb1 1 2551 20490876 83 Linux
/dev/sdb2 2552 5102 20490907+ 83 Linux
/dev/sdb3 5103 7653 20490907+ 83 Linux
Command (m for help): t
Partition number (1-4): 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/sdb: 85.9 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 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: 0xcef106d2
Device Boot Start End Blocks Id System
/dev/sdb1 1 2551 20490876 8e Linux LVM
/dev/sdb2 2552 5102 20490907+ 83 Linux
/dev/sdb3 5103 7653 20490907+ 83 Linux
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@rhel ~]# fdisk /dev/sdc
Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel
Building a new DOS disklabel with disk identifier 0xee6543e6.
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): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-10443, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-10443, default 10443): +20000M
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (2552-10443, default 2552):
Using default value 2552
Last cylinder, +cylinders or +size{K,M,G} (2552-10443, default 10443): +20000M
Command (m for help): n
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 3
First cylinder (5103-10443, default 5103):
Using default value 5103
Last cylinder, +cylinders or +size{K,M,G} (5103-10443, default 10443): +20000M
Command (m for help): t
Partition number (1-4): 1
Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@rhel ~]# fdisk -l /dev/sdb
Disk /dev/sdb: 85.9 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 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: 0xcef106d2
[root@rhel ~]# partprobe /dev/sdb
[root@rhel ~]# partprobe /dev/sdc
[root@rhel ~]# fdisk -l /dev/sdb /dev/sdc |grep "LVM"
/dev/sdb1 1 2551 20490876 8e Linux LVM
/dev/sdc1 1 2551 20490876 8e Linux LVM
[root@rhel ~]# pvcreate /dev/sdb1 /dev/sdc1
Physical volume "/dev/sdb1" successfully created
Physical volume "/dev/sdc1" successfully created
[root@rhel ~]# vgcreate mail_store /dev/sdb1 /dev/sdc1
Volume group "mail_store" successfully created
[root@rhel ~]# pvdisplay /dev/sdb1
--- Physical volume ---
PV Name /dev/sdb1
VG Name mail_store
PV Size 19.54 GiB / not usable 2.62 MiB
Allocatable yes
PE Size 4.00 MiB
Total PE 5002
Free PE 5002
Allocated PE 0
PV UUID 3e7KsE-wl5x-s6Jd-P0I4-Zc2g-f8Vs-vOI0SA
[root@rhel ~]# vgdisplay mail_store
--- Volume group ---
VG Name mail_store
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 1
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 0
Open LV 0
Max PV 0
Cur PV 2
Act PV 2
VG Size 39.08 GiB
PE Size 4.00 MiB
Total PE 10004
Alloc PE / Size 0 / 0
Free PE / Size 10004 / 39.08 GiB
VG UUID 34y6G3-U1rO-S1Lq-vd1z-Z1Lq-FKrP-AezHPF
[root@rhel ~]# lvcreate -L 10G -n mail mail_store
Logical volume "mail" created
[root@rhel ~]# lvcreate -L 10G -n benet mail_store
Logical volume "benet" created
[root@rhel ~]# lvscan
ACTIVE '/dev/mail_store/mail' [10.00 GiB] inherit
ACTIVE '/dev/mail_store/benet' [10.00 GiB] inherit
[root@rhel ~]# ls /dev/mail_store/mail /dev/mail_store/benet
/dev/mail_store/benet /dev/mail_store/mail
[root@rhel ~]# ls /dev/ma
mail_store/ mapper/
[root@rhel ~]# ls /dev/mapper/mail_store-mail /dev/mapper/mail_store-benet
/dev/mapper/mail_store-benet /dev/mapper/mail_store-mail
[root@rhel ~]# lvdisplay /dev/mapper/mail_store-mail
--- Logical volume ---
LV Path /dev/mail_store/mail
LV Name mail
VG Name mail_store
LV UUID 9xOH34-Qrnu-592R-870r-38qA-13On-lwrw8R
LV Write Access read/write
LV Creation host, time rhel.localdomain, 2013-06-07 04:15:14 +0800
LV Status available
# open 0
LV Size 10.00 GiB
Current LE 2560
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
[root@rhel ~]# mkfs -t ext3 /dev/mail_store/mail
mke2fs 1.41.12 (17-May-2010)
\u6587\u4ef6\u7cfb\u7edf\u6807\u7b7e=
\u64cd\u4f5c\u7cfb\u7edf
inux
\u5757\u5927\u5c0f=4096 (log=2)
\u5206\u5757\u5927\u5c0f=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
655360 inodes, 2621440 blocks
131072 blocks (5.00%) reserved for the super user
\u7b2c\u4e00\u4e2a\u6570\u636e\u5757=0
Maximum filesystem blocks=2684354560
80 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
\u6b63\u5728\u5199\u5165inode\u8868: \u5b8c\u6210
Creating journal (32768 blocks): \u5b8c\u6210
Writing superblocks and filesystem accounting information: \u5b8c\u6210
This filesystem will be automatically checked every 36 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@rhel ~]# lvextend -L +5G /dev/mail_store/mail
Extending logical volume mail to 15.00 GiB
Logical volume mail successfully resized
[root@rhel ~]# lvdisplay /dev/mail_store/mail
--- Logical volume ---
LV Path /dev/mail_store/mail
LV Name mail
VG Name mail_store
LV UUID 9xOH34-Qrnu-592R-870r-38qA-13On-lwrw8R
LV Write Access read/write
LV Creation host, time rhel.localdomain, 2013-06-07 04:15:14 +0800
LV Status available
# open 0
LV Size 15.00 GiB
Current LE 3840
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0
[root@rhel ~]# resize2fs /dev/mail_store/mail
resize2fs 1.41.12 (17-May-2010)
Resizing the filesystem on /dev/mail_store/mail to 3932160 (4k) blocks.
The filesystem on /dev/mail_store/mail is now 3932160 blocks long.
[root@rhel ~]# mkdir /mailbox
[root@rhel ~]# mount /dev/mail_store/mail /mailbox/
[root@rhel ~]# df -hT /mailbox/
\u6587\u4ef6\u7cfb\u7edf \u7c7b\u578b \u5bb9\u91cf \u5df2\u7528 \u53ef\u7528 \u5df2\u7528%% \u6302\u8f7d\u70b9
/dev/mapper/mail_store-mail
ext3 15G 154M 14G 2% /mailbox
[root@rhel ~]#
发表于 2020-4-2 15:45:56
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