1、創建一個10G分區，并格式為ext4文件系統；
(1) 要求其block大小為2048, 預留空間百分比為2, 卷標為MYDATA, 默認掛載屬性包含acl；
(2) 掛載至/data/mydata目錄，要求掛載時禁止程序自動運行，且不更新文件的訪問時間戳；
[root@centos ~]# fdisk -l #馬哥說不寫注釋的都是耍流氓
Disk /dev/sda: 171.8 GB, 171798691840 bytes
255 heads, 63 sectors/track, 20886 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: 0x00098b32
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 20887 167259136 8e Linux LVM
Disk /dev/sdb: 10.7 GB, 10737418240 bytes #創建一個10G分區
255 heads, 63 sectors/track, 1305 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/mapper/vg_centos-lv_root: 170.2 GB, 170196467712 bytes
255 heads, 63 sectors/track, 20691 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/mapper/vg_centos-lv_swap: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 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@centos ~]# 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 0x248136bc.
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 (1-1305, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-1305, default 1305):
Using default value 1305
Command (m for help): wq
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@centos ~]# fdisk -l
Disk /dev/sda: 171.8 GB, 171798691840 bytes
255 heads, 63 sectors/track, 20886 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: 0x00098b32
Device Boot Start End Blocks Id System
/dev/sda1 * 1 64 512000 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 64 20887 167259136 8e Linux LVM
Disk /dev/sdb: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 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: 0x248136bc
Device Boot Start End Blocks Id System
/dev/sdb1 1 1305 10482381 83 Linux
Disk /dev/mapper/vg_centos-lv_root: 170.2 GB, 170196467712 bytes
255 heads, 63 sectors/track, 20691 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/mapper/vg_centos-lv_swap: 1073 MB, 1073741824 bytes
255 heads, 63 sectors/track, 130 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@centos ~]# mkfs -b 2048 -t ext4 -L MYDATA -m 2 /dev/sdb1 #格式為ext4文件系統，其block大小為2048, 預留空間百分比為2, 卷標為MYDATA
mke2fs 1.41.12 (17-May-2010)
文件系統標簽=MYDATA
操作系統:Linux
塊大小=2048 (log=1)
分塊大小=2048 (log=1)
Stride=0 blocks, Stripe width=0 blocks
655360 inodes, 5241190 blocks
262059 blocks (5.00%) reserved for the super user
第一個數據塊=0
Maximum filesystem blocks=542113792
320 block groups
16384 blocks per group, 16384 fragments per group
2048 inodes per group
Superblock backups stored on blocks:
16384, 49152, 81920, 114688, 147456, 409600, 442368, 802816, 1327104,
2048000, 3981312
正在寫入inode表: 完成
Creating journal (32768 blocks): 完成
Writing superblocks and filesystem accounting information: 完成
This filesystem will be automatically checked every 20 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
[root@centos ~]# tune2fs -o acl /dev/sdb1 #默認掛載屬性包含acl
tune2fs 1.41.12 (17-May-2010)
[root@centos ~]# mkdir -p /data/mydata && mount -o noexec,noatime /dev/sdb1 /data/mydata #掛載至/data/mydata目錄，要求掛載時禁止程序自動運行，且不更新文件的訪問時間戳
[root@centos ~]# echo $?
0
[root@centos ~]# cd /data/
[root@centos data]# ll
總用量 2
drwxr-xr-x 3 root root 2048 12月 26 17:36 mydata
[root@centos data]# cd mydata/
[root@centos mydata]# ll
總用量 16
drwx------ 2 root root 16384 12月 26 17:36 lost+found
[root@centos mydata]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_centos-lv_root
156G 3.8G 145G 3% /
tmpfs 1.9G 72K 1.9G 1% /dev/shm
/dev/sda1 477M 160M 292M 36% /boot
/dev/sdb1 9.8G 13M 9.3G 1% /data/mydata
[root@centos mydata]#
2、創建一個大小為1G的swap分區，并創建好文件系統，并啟用之；
[root@centos ~]# 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 0x70af3aab.
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)
Command action
e extended
p primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-130, default 1):
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-130, default 130):
Using default value 130
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
[root@centos ~]# mkswap /dev/sdb1
Setting up swapspace version 1, size = 1044188 KiB
no label, UUID=85de9eea-a86d-48f4-a24d-00615a9812f8
[root@centos ~]# swapon /dev/sdb1
[root@centos ~]# free -m
total used free shared buffers cached
Mem: 3816 517 3299 1 27 289
-/+ buffers/cache: 200 3615
Swap: 1019 0 1019
[root@centos ~]# echo "/dev/sdb1 swap swap defaults 0 0" >> /etc/fstab #swap現已加入開機掛載全家桶！
3、寫一個腳本
(1)、獲取并列出當前系統上的所有磁盤設備；(2)、顯示每個磁盤設備上每個分區相關的空間使用信息；
[root@centos gogogogogogogogoo]# cat DiskInfo_Jerry.sh #馬哥說過，腳本就是命令的拼湊，所以，命令學好，腳本風騷。 #!/bin/bash #Author: Jerry lsblk df -ahT [root@centos gogogogogogogogoo]# bash DiskInfo_Jerry.sh NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 160G 0 disk ├─sda1 8:1 0 500M 0 part /boot └─sda2 8:2 0 159.5G 0 part ├─vg_centos-lv_root (dm-0) 253:0 0 158.5G 0 lvm / └─vg_centos-lv_swap (dm-1) 253:1 0 1G 0 lvm sdb 8:16 0 10G 0 disk └─sdb1 8:17 0 10G 0 part ├─vg_mage-mylv1-real (dm-3) 253:3 0 5G 0 lvm │ ├─vg_mage-mylv1 (dm-2) 253:2 0 5G 0 lvm │ └─vg_mage-snvg1 (dm-5) 253:5 0 5G 1 lvm └─vg_mage-snvg1-cow (dm-4) 253:4 0 160M 1 lvm └─vg_mage-snvg1 (dm-5) 253:5 0 5G 1 lvm sdc 8:32 0 60G 0 disk └─sdc1 8:33 0 60G 0 part Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/vg_centos-lv_root ext4 156G 3.4G 145G 3% / proc proc 0 0 0 - /proc sysfs sysfs 0 0 0 - /sys devpts devpts 0 0 0 - /dev/pts tmpfs tmpfs 1.9G 68K 1.9G 1% /dev/shm /dev/sda1 ext4 477M 35M 418M 8% /boot /dev/mapper/vg_mage-mylv1 ext4 4.8G 10M 4.6G 1% /users none binfmt_misc 0 0 0 - /proc/sys/fs/binfmt_misc vmware-vmblock fuse.vmware-vmblock 0 0 0 - /var/run/vmblock-fuse [root@centos gogogogogogogogoo]#
4、總結RAID的各個級別及其組合方式和性能的不同；
RAID-0: 讀、寫性能提升； 可用空間：N*min(S1,S2,...) 無容錯能力 最少磁盤數：2, 2+ RAID-1： 讀性能提升、寫性能略有下降； 可用空間：1*min(S1,S2,...) 有冗余能力 最少磁盤數：2, 2+ RAID-4： 1101, 0110, 1011 RAID-5： 讀、寫性能提升 可用空間：(N-1)*min(S1,S2,...) 有容錯能力：1塊磁盤 最少磁盤數：3, 3+ RAID-6： 讀、寫性能提升 可用空間：(N-2)*min(S1,S2,...) 有容錯能力：2塊磁盤 最少磁盤數：4, 4+ 混合類型 RAID-10： 讀、寫性能提升 可用空間：N*min(S1,S2,...)/2 有容錯能力：每組鏡像最多只能壞一塊； 最少磁盤數：4, 4+
5、創建一個大小為10G的RAID1，要求有一個空閑盤，而且CHUNK大小為128k;
生產環境都是用服務器自帶的磁盤陣列卡來做raid，具體詳見各廠商的操作文檔，此題我就跳過了，請老濕原諒我的直接。
6、創建一個大小為4G的RAID5設備，chunk大小為256k，格式化ext4文件系統，要求可開機自動掛載至/backup目錄，而且不更新訪問時間戳，且支持acl功能；
生產環境都是用服務器自帶的磁盤陣列卡來做raid，具體詳見各廠商的操作文檔，此題我就跳過了，請老濕原諒我的直接。 更新訪問時間戳我要說一下，生產環境一般都是要更新訪問時間戳的
7、寫一個腳本，(1) 接受一個以上文件路徑作為參數；(2) 顯示每個文件擁有的行數；(3) 總結說明本次共為幾個文件統計了其行數；
[root@centos gogogogogogogogoo]# bash Sum_wc-l.sh /etc/ssh/sshd_config /etc/fstab /etc/rc.local Number of rows in /etc/ssh/sshd_config is 138 Number of rows in /etc/fstab is 16 Number of rows in /etc/rc.local is 7 total of 3 files [root@centos gogogogogogogogoo]# cat Sum_wc-l.sh #!/bin/bash # if [ $# -lt 1 ];then echo "At least one filesname " exit 2 fi for i in $*;do line=$(cat $i | wc -l) echo "Number of rows in $i is $line" done echo "total of $# files" [root@centos gogogogogogogogoo]#
8、寫一個腳本 (1) 傳遞兩個以上字符串當作用戶名；(2) 創建這些用戶；且密碼同用戶名；(3) 總結說明共創建了幾個用戶；
[root@centos gogogogogogogogoo]# bash Creat_user.sh At least two username [root@centos gogogogogogogogoo]# bash Creat_user.sh abb1 abb2 abb3 abb4 Add user abb1 finished Add user abb2 finished Add user abb3 finished Add user abb4 finished total of Create 4 users [root@centos gogogogogogogogoo]# cat Creat_user.sh #!/bin/bash if [ $# -lt 2 ];then echo "At least two username " exit 2 fi for i in $*;do if grep "^$i\>" /etc/passwd &> /dev/null;then echo "User $i exists" else useradd $i echo $i | passwd --stdin $i &> /dev/null echo "Add user $i finished" fi done echo "total of Create $# users" [root@centos gogogogogogogogoo]#
9、寫一個腳本，新建20個用戶，visitor1-visitor20；計算他們的ID之和；
[root@centos gogogogogogogogoo]# bash sum_userid.sh
The users ID sum is: 10330
[root@centos gogogogogogogogoo]# cat sum_userid.sh
#!/bin/bash
num=0
for i in {1..20};do
if id visitor$i &> /dev/null;then
echo "visitor$i exists"
else
useradd visitor$i
id=$(grep "^visitor$i\>" /etc/passwd | cut -d: -f 3)
let num+=$id
fi
done
echo "The users ID sum is: $num"
[root@centos gogogogogogogogoo]#
10、寫一腳本，分別統計/etc/rc.d/rc.sysinit、/etc/rc.d/init.d/functions和/etc/fstab文件中以#號開頭的行數之和，以及總的空白行數；
[root@centos jerry_go]# cat title10-2.sh #!/bin/bash #Author:Jerry #Description # # if [ -e $1 ]; then jinghao1=$(grep "^#" $1 | wc -l) blank_line1=$(grep "^$" $1 | wc -l) echo "The file $1 Jinghao_lines:$jinghao1 Blank_lines:$blank_line1 " else echo "The file $1 no exist" exit 2 fi if [ -e $2 ]; then jinghao2=$(grep "^#" $2 | wc -l) blank_line2=$(grep "^$" $2 | wc -l) echo "The file $2 Jinghao_lines:$jinghao2 Blank_lines:$blank_line2 " else echo "The file $2 no exist" exit 2 fi if [ -e $3 ]; then jinghao3=$(grep "^#" $3 | wc -l) blank_line3=$(grep "^$" $3 | wc -l) echo "The file $3 Jinghao_lines:$jinghao3 Blank_lines:$blank_line3 " else echo "The file $3 no exist" exit 2 fi echo "Total jinghao lines: $[$jinghao1+$jinghao2+$jinghao3]" echo "Total blank lines: $[$blank_line1+$blank_line2+$blank_line3]" && exit 0 走一個！come on baby！ [root@centos jerry_go]# bash title10-2.sh /etc/rc.d/rc.sysinit /etc/rc.d/init.d/functions /etc/fstab The file /etc/rc.d/rc.sysinit Jinghao_lines:44 Blank_lines:100 The file /etc/rc.d/init.d/functions Jinghao_lines:43 Blank_lines:105 The file /etc/fstab Jinghao_lines:8 Blank_lines:1 Total jinghao lines: 95 Total blank lines: 206 [root@centos jerry_go]# 異常的走一個！ 歐耶！ [root@centos jerry_go]# bash title10-2.sh /etc/rc.d/rc.sysinit /etc/rc.d/init.d/funct234ions /etc/fstab The file /etc/rc.d/rc.sysinit Jinghao_lines:44 Blank_lines:100 The file /etc/rc.d/init.d/funct234ions no exist [root@centos jerry_go]# 異常的再走一個！ [root@centos jerry_go]# bash title10-2.sh /etc/rc.d/rc.sysinit /etc/rc.d/init.d/functions /etc/fst123ab The file /etc/rc.d/rc.sysinit Jinghao_lines:44 Blank_lines:100 The file /etc/rc.d/init.d/functions Jinghao_lines:43 Blank_lines:105 The file /etc/fst123ab no exist [root@centos jerry_go]# 最后發現井號的英文是well number ， 腳本里面用拼音實在是很low，不過我是剛開始嘛，who care......
11、寫一個腳本，顯示當前系統上所有默認shell為bash的用戶的用戶名、UID以及此類所有用戶的UID之和；
[root@centos jerry_go]# cat week7_title11.sh
#!/bin/bash
#Author:Jerry
#Description
#
#
grep "bin/bash$" /etc/passwd |cut -d":" -f1,3
for i in `grep "bin/bash$" /etc/passwd |awk -F ":" '{print $3}'`;do
let sum+=$i
done
echo "Users ID sum is:$sum"
[root@centos jerry_go]# bash week7_title11.sh
root:0
magedu:500
mamamamam:501
magedu1:502
abb1:503
abb2:504
abb3:505
abb4:506
visitor1:507
visitor2:508
visitor3:509
visitor4:510
visitor5:511
visitor6:512
visitor7:513
visitor8:514
visitor9:515
visitor10:516
visitor11:517
visitor12:518
visitor13:519
visitor14:520
visitor15:521
visitor16:522
visitor17:523
visitor18:524
visitor19:525
visitor20:526
Users ID sum is:13851
12、寫一個腳本，顯示當前系統上所有，擁有附加組的用戶的用戶名；并說明共有多少個此類用戶；
[root@centos jerry_go]# bash week7_title12.sh
bin
daemon
sys
adm
lp
mail
haldaemon
This users has 7.
[root@centos jerry_go]# cat week7_title12.sh
#!/bin/bash
#Author:Jerry
#Description
#
grep -v ":$" /etc/group |awk -F ":" '{print $1}'
echo "This users has $(grep -v ":$" /etc/group |awk -F ":" '{print $1}'|wc -l)."
[root@centos jerry_go]#
13、創建一個由至少兩個物理卷組成的大小為20G的卷組；要求，PE大小為8M；而在卷組中創建一個大小為5G的邏輯卷mylv1，格式化為ext4文件系統，開機自動掛載至/users目錄，支持acl；
[root@centos ~]# pvdisplay #先看看環境 --- Physical volume --- PV Name /dev/sda2 VG Name vg_centos PV Size 159.51 GiB / not usable 3.00 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 40834 Free PE 0 Allocated PE 40834 PV UUID 1O2YO5-7puR-3Pfu-nR15-tqCc-JjPN-giIZeh "/dev/sdb1" is a new physical volume of "10.00 GiB" --- NEW Physical volume --- PV Name /dev/sdb1 VG Name PV Size 10.00 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID dmUkps-1j6e-q50O-yOh8-nBlT-lw6t-nGKnat "/dev/sdc1" is a new physical volume of "60.00 GiB" --- NEW Physical volume --- PV Name /dev/sdc1 VG Name PV Size 60.00 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID WfoY2H-efkl-qx0z-Yetm-wyV0-3lUU-u815Aq [root@centos ~]# vgcreate -s 8m vg_mage /dev/sdb1 /dev/sdc1 #創建一個由至少兩個物理卷組成的大小為20G的卷組，我這里不止了，無傷大雅。 Volume group "vg_mage" successfully created [root@centos ~]# lvcreate -L 5G -n mylv1 vg_mage && mkfs.ext4 /dev/vg_mage/mylv1 #在卷組中創建一個大小為5G的邏輯卷mylv1，格式化為ext4文件系統 [root@centos ~]# mkdir /users && echo "/dev/vg_mage/mylv1 /users ext4 defaults,acl 0 0" >> /etc/fstab #自動掛載至/users目錄，支持acl [root@centos ~]# cat /etc/fstab # # /etc/fstab # Created by anaconda on Thu Jun 23 18:40:21 2016 # # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info # /dev/mapper/vg_centos-lv_root / ext4 defaults 1 1 UUID=7b714956-acd7-44cb-af53-4eacde793fd9 /boot ext4 defaults 1 2 #/dev/mapper/vg_centos-lv_swap swap swap defaults 0 0 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 /dev/vg_mage/mylv1 /users ext4 defaults,acl 0 0 [root@centos ~]#
14、新建用戶magedu；其家目錄為/users/magedu，而后su切換至此用戶，復制多個文件至家目錄；
[root@centos ~]# useradd magedu -d /users/magedu [root@centos ~]# su - magedu [magedu@centos ~]$ cp /etc/*.conf ~ [magedu@centos ~]$ ls -al 總用量 188 drwx------ 4 magedu magedu 4096 12月 27 12:52 . drwxr-xr-x. 4 root root 4096 12月 27 12:48 .. -rw-r--r-- 1 magedu magedu 148 12月 27 12:52 asound.conf -rw-r--r-- 1 magedu magedu 18 5月 11 2016 .bash_logout -rw-r--r-- 1 magedu magedu 176 5月 11 2016 .bash_profile -rw-r--r-- 1 magedu magedu 124 5月 11 2016 .bashrc -rw-r--r-- 1 magedu magedu 1780 12月 27 12:52 cas.conf -rw-r--r-- 1 magedu magedu 21214 12月 27 12:52 dnsmasq.conf -rw-r--r-- 1 magedu magedu 519 12月 27 12:52 dracut.conf -rw-r--r-- 1 magedu magedu 20 12月 27 12:52 fprintd.conf -rw-r--r-- 1 magedu magedu 0 12月 27 12:52 gai.conf drwxr-xr-x 2 magedu magedu 4096 11月 12 2010 .gnome2 -rw-r--r-- 1 magedu magedu 9 12月 27 12:52 host.conf -rw-r--r-- 1 magedu magedu 0 12月 27 12:52 init.conf -rw-r--r-- 1 magedu magedu 8120 12月 27 12:52 kdump.conf -rw-r--r-- 1 magedu magedu 449 12月 27 12:52 krb5.conf -rw-r--r-- 1 magedu magedu 1662 12月 27 12:52 latrace.conf -rw-r--r-- 1 magedu magedu 47 12月 27 12:52 ld.so.conf -rw-r--r-- 1 magedu magedu 2293 12月 27 12:52 libuser.conf -rw-r--r-- 1 magedu magedu 662 12月 27 12:52 logrotate.conf -rw-r--r-- 1 magedu magedu 10814 12月 27 12:52 ltrace.conf -rw-r--r-- 1 magedu magedu 827 12月 27 12:52 mke2fs.conf drwxr-xr-x 4 magedu magedu 4096 6月 23 2016 .mozilla -rw-r--r-- 1 magedu magedu 2620 12月 27 12:52 mtools.conf -rw-r--r-- 1 magedu magedu 1688 12月 27 12:52 nsswitch.conf -rw-r--r-- 1 magedu magedu 1698 12月 27 12:52 ntp.conf -rw-r--r-- 1 magedu magedu 370 12月 27 12:52 pm-utils-hd-apm-restore.conf -rw-r--r-- 1 magedu magedu 789 12月 27 12:52 prelink.conf -rw-r--r-- 1 magedu magedu 966 12月 27 12:52 readahead.conf -rw-r--r-- 1 magedu magedu 81 12月 27 12:52 resolv.conf -rw-r--r-- 1 magedu magedu 2875 12月 27 12:52 rsyslog.conf -rw-r--r-- 1 magedu magedu 216 12月 27 12:52 sestatus.conf -rw-r--r-- 1 magedu magedu 6717 12月 27 12:52 smartd.conf -rw-r--r-- 1 magedu magedu 256 12月 27 12:52 sos.conf -rw-r--r-- 1 magedu magedu 1800 12月 27 12:52 sysctl.conf -rw-r--r-- 1 magedu magedu 1309 12月 27 12:52 tpvmlp.conf -rw-r--r-- 1 magedu magedu 45 12月 27 12:52 Trolltech.conf -rw-r--r-- 1 magedu magedu 485 12月 27 12:52 updatedb.conf -rw-r--r-- 1 magedu magedu 3008 12月 27 12:52 warnquota.conf -rw-r--r-- 1 magedu magedu 969 12月 27 12:52 yum.conf [magedu@centos ~]$
15、擴展mylv1至9G，確保擴展完成后原有數據完全可用；
lvextend -L +4G /dev/mapper/myvg-mylv1 resize2fs /dev/mapper/myvg-mylv1
16、縮減mylv1至7G，確?？s減完成后原有數據完全可用；
# umount /dev/vg_mage/mylv1 # e2fsck -f /dev/vg_mage/mylv1 # resize2fs /dev/vg_mage/mylv11 7G # lvreduce -L 7G /dev/vg_mage/mylv1 # mount /dev/vg_mage/mylv1 /users/
17、對mylv1創建快照，并通過備份數據；要求保留原有的屬主屬組等信息；
[root@centos users]# lvcreate -s -l 20 -n snvg1 -p r /dev/vg_mage/mylv1 Logical volume "snvg1" created.
原創文章，作者：N24_Jerry，如若轉載，請注明出處：http://www.www58058.com/65351
寫的很棒，排版也很棒，為什么下面的沒有注釋了那？
@馬哥教育：(⊙o⊙)……. 開始耍流氓了