aix下sybase设备的迁移
aix下让sybase的所有库从一个存储迁移到另一个存储，或者从一个vg迁移到另一个vg，抑或移动sybase所有库到新的位置，在aix下都可以通过拷贝相关lv实现。由于公司ibm小型机硬件原因，简单举个迁移sybase设备从rootvg上到datavg的例子。过程如下：
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一、基本信息
1 数据库当前的设备如下
name phyname
------------------------------ ------------------------
master /dev/rlv_master
sysprocsdev /dev/rlv_proc
2 rootvg的lv信息
# lsvg -l rootvg
rootvg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
hd5 boot 1 1 1 closed/syncd N/A
hd6 paging 64 64 1 open/syncd N/A
hd8 jfs2log 1 1 1 open/syncd N/A
hd4 jfs2 48 48 1 open/syncd /
hd2 jfs2 64 64 1 open/syncd /usr
hd9var jfs2 48 48 1 open/syncd /var
hd3 jfs2 48 48 1 open/syncd /tmp
hd1 jfs2 1 1 1 open/syncd /home
hd10opt jfs2 48 48 1 open/syncd /opt
lg_dumplv sysdump 16 16 1 open/syncd N/A
lv_master raw 5 5 1 open/syncd N/A
lv_proc raw 5 5 1 open/syncd N/A
lv_data1 raw 16 16 1 closed/syncd N/A
3 sybase RUN_CRM 文件内容如下
$ cat RUN_CRM
#!/bin/sh
#
# Adaptive Server name: CRM
# ASE page size (KB): 2k
# Master device path: /dev/rlv_master
# Error log path: /sybase/ASE-12_5/install/CRM.log
# Configuration file path: /sybase/ASE-12_5/CRM.cfg
# Directory for shared memory files: /sybase/ASE-12_5
#
/sybase/ASE-12_5/bin/dataserver \
-sCRM \
-d/dev/rlv_master \
-e/sybase/ASE-12_5/install/CRM.log \
-c/sybase/ASE-12_5/CRM.cfg \
-M/sybase/ASE-12_5 \
4 sybase的接口文件内容如下：
# cat interfaces
CRM
master tcp ether 192.168.85.9 5000
query tcp ether 192.168.85.9 5000
CRM_back
master tcp ether 192.168.85.9 5001
query tcp ether 192.168.85.9 5001
二、拷贝sybase的所有相关lv、本例sybase只有lv_master lv_proc两个lv （注意由于是简单模拟实验，所以sybase就只有这么两个lv）
1 拷贝过程如下：
cplv命令解释如下：
-y 新的lv名字
-v 目标卷组名字
# cplv -y newlv_master -v datavg lv_master
cplv: Logical volume lv_master successfully copied to newlv_master .
# cplv -y newlv_proc -v datavg lv_proc
cplv: Logical volume lv_proc successfully copied to newlv_proc .
2 拷贝lv后datavg 的lv信息如下：
# lsvg -l datavg
datavg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
lv_backup jfs2 320 320 1 open/syncd /backup
loglv00 jfs2log 1 1 1 open/syncd N/A
newlv_master raw 10 10 1 closed/syncd N/A
newlv_proc raw 10 10 1 closed/syncd N/A
三、更改lv名字
1 更改原rootvg上sybaselv的名字
chlv命令参数解释如下：
-n 为新lv名字
# chlv -n oldlv_master lv_master
# chlv -n oldlv_proc lv_proc
2 更改datavg上lv名字（由newlv_master--> lv_master| newlv_proc-->lv_proc)
# chlv -n lv_master newlv_master
# chlv -n lv_proc newlv_proc
四、启动服务后测试情况如下
1 启动主服务和备份服务
$ startserver -f RUN_CRM
$ startserver -f RUN_CRM_back
2 验证
如下可看到sybase主备服务已经启动成功
$ showserver
USER PID %CPU %MEM SZ RSS TTY STAT STIME TIME COMMAND
sybase 319558 2.0 2.0 25564 17188 pts/1 A 11:42:25 0:03 /sybase/ASE-12_5/bin/dataserver -sCRM -d/dev/rlv_master -e/sybase/ASE-12_5/install/CRM.log -c/sybase/ASE-12_5/CRM.cfg -M/sybase/ASE-12_5
sybase 286878 0.0 1.0 7016 7440 pts/1 A 11:43:14 0:00 /sybase/ASE-12_5/bin/backupserver -SCRM_back -e/sybase/ASE-12_5/install/CRM_back.log -Ldefault -Jcp850 -N25 -C20 -M/sybase/ASE-12_5/bin/sybmultbuf
验证下master库能否备份，如下：
$ isql -Usa -P -SCRM
1> dump database master to '/backup/master2.dat'
2> go
WARNING: In order to LOAD the master database, the SQL Server must run in
single-user mode. If the master database dump uses multiple volumes, you must
execute sp_volchanged on another SQL Server at LOAD time in order to signal
volume changes.
Backup Server session id is: 5. Use this value when executing the
'sp_volchanged' system stored procedure after fulfilling any volume change
request from the Backup Server.
Backup Server: 4.41.1.1: Creating new disk file /backup/master2.dat.
Backup Server: 6.28.1.1: Dumpfile name 'master132960A524 ' section number 1
mounted on disk file '/backup/master2.dat'
Backup Server: 4.58.1.1: Database master: 4546 kilobytes DUMPED.
Backup Server: 4.58.1.1: Database master: 4716 kilobytes DUMPED.
Backup Server: 4.58.1.1: Database master: 4888 kilobytes DUMPED.
Backup Server: 4.58.1.1: Database master: 5058 kilobytes DUMPED.
Backup Server: 4.58.1.1: Database master: 5230 kilobytes DUMPED.
Backup Server: 4.58.1.1: Database master: 5400 kilobytes DUMPED.
Backup Server: 4.58.1.1: Database master: 5572 kilobytes DUMPED.
Backup Server: 4.58.1.1: Database master: 5710 kilobytes DUMPED.
Backup Server: 3.43.1.1: Dump phase number 1 completed.
Backup Server: 3.43.1.1: Dump phase number 2 completed.
Backup Server: 3.43.1.1: Dump phase number 3 completed.
Backup Server: 4.58.1.1: Database master: 5718 kilobytes DUMPED.
Backup Server: 3.42.1.1: DUMP is complete (database master).
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