AIX 在硬盤rootvg上做操作系統(tǒng)備份mksysback方法

1、AIX 在硬盤上做操作系統(tǒng)備份mksysback， 備份rootvg說明：操作系統(tǒng)V6R1 ，系統(tǒng)中只有一個VG rootvg注意：smit的log在根目錄下smit.log可以查看該文件便于查詢故障，硬盤系統(tǒng)備份無法引導系統(tǒng)，需要配置NAM才能做恢復測試先用root賬戶登錄系統(tǒng)l 步驟1： lsvg rootvg檢查評估rootvg大小，如下USED PPS.# lsvg rootvgVOLUME GROUP: rootvg VG IDENTIFIER: 00c03cc9aa4906VG STATE: active PP SIZE: 256 megabyte(s)VG PERMISSION:

2、 read/write TOTAL PPs: 1092 ( megabytes)MAX LVs: 256 FREE PPs: 1010 ( megabytes)LVs: 13 USED PPs: 82 (20992 megabytes)OPEN LVs: 11 QUORUM: 2 (Enabled)TOTAL PVs: 2 VG DESCRIPTORS: 3STALE PVs: 0 STALE PPs: 0ACTIVE PVs: 2 AUTO ON: yesMAX PPs per VG: 32512 MAX PPs per PV: 1016 MAX PVs: 32LTG size (Dynam

3、ic): 1024 kilobyte(s) AUTO SYNC: noHOT SPARE: no BB POLICY: relocatablel 步驟二：檢查系統(tǒng)文件系統(tǒng)那些還有足夠空間存放備份文件df g如下，若有必要擴空間# df -gFilesystem GB blocks Free %Used Iused %Iused Mounted on/dev/hd4 0.50 0.32 36% 13031 15% /dev/hd2 3.50 0.81 77% 45658 20% /usr/dev/hd9var 2.00 1.69 16% 9269 3% /var/dev/hd3 0.25 0.0

4、9 65% 112 1% /tmp/dev/hd1 10.00 6.95 31% 50 1% /home/dev/hd11admin 0.25 0.25 1% 5 1% /admin/proc - - - - - /proc/dev/hd10opt 0.50 0.31 39% 8697 11% /opt/dev/livedump 0.25 0.25 1% 4 1% /var/adm/ras/livedump/dev/fslv00 1.00 0.75 25% 5 1% /wujtest如下；/home 空間較多若/home 空間不足 參考如下如增加/home目錄空間，先lsvg rootvg 確

5、認vg中有足夠可用FREE PP# lsvg rootvgVOLUME GROUP: rootvg VG IDENTIFIER: 00c03cc9aa4906VG STATE: active PP SIZE: 256 megabyte(s)VG PERMISSION: read/write TOTAL PPs: 1092 ( megabytes)MAX LVs: 256 FREE PPs: 1010 ( megabytes)LVs: 13 USED PPs: 82 (20992 megabytes)OPEN LVs: 11 QUORUM: 2 (Enabled)TOTAL PVs: 2 VG

6、DESCRIPTORS: 3STALE PVs: 0 STALE PPs: 0ACTIVE PVs: 2 AUTO ON: yesMAX PPs per VG: 32512 MAX PPs per PV: 1016 MAX PVs: 32LTG size (Dynamic): 1024 kilobyte(s) AUTO SYNC: noHOT SPARE: no BB POLICY: relocatable運行命令smit chfs選擇Change / Show Characteristics of an Enhanced Journaled File System再選擇你需要擴的LV的mou

7、nt point比如我需要的/home先定位光標在Unit Size 中按F4選擇Gigabytes 修改以G為單位在Number of units輸入要把/home擴到多大比如11G 就輸入11按執(zhí)行鍵執(zhí)行，等運行完成確認執(zhí)行結果正常Command: OK COMMAND STATUSCommand: OK stdout: yes stderr: noBefore command completion, additional instructions may appear below.Filesystem size changed to df g命令查看確認/home空間已經擴展成功為11G

8、 # df -gFilesystem GB blocks Free %Used Iused %Iused Mounted on/dev/hd4 0.50 0.32 36% 13031 15% /dev/hd2 3.50 0.81 77% 45658 20% /usr/dev/hd9var 2.00 1.69 16% 9266 3% /var/dev/hd3 0.25 0.09 65% 112 1% /tmp/dev/hd1 11.00 7.95 28% 50 1% /home/dev/hd11admin 0.25 0.25 1% 5 1% /admin/proc - - - - - /proc

9、/dev/hd10opt 0.50 0.31 39% 8697 11% /opt/dev/livedump 0.25 0.25 1% 4 1% /var/adm/ras/livedump/dev/fslv00 1.00 0.75 25% 5 1% /wujtestl 用touch命令在/home目錄下創(chuàng)建備份空文件 cd /home 修改當前目錄 touch sysbackup注意：空文件一定要先建立否則mksysb無法備份成功，會有如下提示報錯信息： COMMAND STATUSCommand: failed stdout: yes stderr: noBefore command comp

10、letion, additional instructions may appear below.Creating information file (/image.data) for rootvg.Creating list of files to back up.Backing up 78651 filesbackup: 0511-089 Cannot open /home/sysbackup: Cannot write to a directory.0512-005 mksysb: Backup Completed. The backup command completed with e

11、rrors. The messages displayed on Standard Error contained additional information.l 檢查系統(tǒng)文件限制 /etc/security/limits文件，修改root賬戶文件大小不限制 運行命令more /etc/security/limitsdefault: fsize = core = cpu = -1 data = rss = 65536 stack = 65536 nofiles = 2000 調用vi命令在/etc/security/limits 增加如下一行root: fsize = -1 default:

12、 fsize = core = cpu = -1 data = rss = 65536 stack = 65536 nofiles = 2000root: fsize = -1 注意：若文件有限制smit mksysb會有如下提示backup: 0511-432 A write error occurred: A file cannot be larger than the value set by ulimit.backup: 0511-079 The backup media may be damaged.Use a different disk to run the backup.l 發(fā)

13、起備份 smit mksysb在Backup DEVICE or FILE選項輸入備份文件和路徑例如/home/sysbackupBackup DEVICE or FILE /home/sysbackup 備份完成之后會有報表提示OK表示備份成功,如下，會有/var/tmp 目錄臨時文件系統(tǒng)提示無法備份屬于正常，備份之后smit的log在根目錄下smit.log可以查看該文件便于查詢故障，硬盤系統(tǒng)備份無法引導系統(tǒng)，需要配置NAM才能做恢復測試 COMMAND STATUSCommand: OK stdout: yes stderr: noBefore command completion, additional instructions may appear below.Creating information file (/image.data) for rootvg.Creating list of files to back up.Backing up 78652 files.backup: 0511-089 Cannot open ./var/tm