在linux 下配置RAC LVM

在linux 下配置RAC LVM

LINUX 雙節點的RAC,其中一個節點在共享存儲上建立了lvm,在另一個節點來激活.

配置環境：RH EL4 Oracle 10g RAC 1、RAC1 的lvm 信息 [root@rac1 mapper]# lvdisplay --- Logical volume --- LV Name /dev/rootvg/lvocr VG Name rootvg LV UUID OrIiVb-Z8Bu-zWdB-VPUq-2BaK-oBdR-i3rHPn LV Write Access read/write LV Status available # open 0 LV Size 500.00 MB Current LE 125 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:0 [root@rac1 mapper]# ls -l total 0 crw------- 1 root root 10, 63 Jul 28 14:37 control brw-rw---- 1 root disk 253, 0 Jul 28 17:44 rootvg-lvocr [root@rac1 mapper]# 2、在另一個節點用mknod建立塊設備文件 [root@rac2 ~]# mknod mknod: too few arguments Try `mknod --help' for more information. [root@rac2 ~]# mknod --help Usage: mknod [OPTION]... NAME TYPE [MAJOR MINOR] Create the special file NAME of the given TYPE. -Z, --context=CONTEXT set security context (quoted string) Mandatory arguments to long options are mandatory for short options too. -m, --mode=MODE set permission mode (as in chmod), not a=rw - umask --help display this help and exit --version output version information and exit Both MAJOR and MINOR must be specified when TYPE is b, c, or u, and they must be omitted when TYPE is p. If MAJOR or MINOR begins with 0x or 0X, it is interpreted as hexadecimal; otherwise, if it begins with 0, as octal; otherwise, as decimal. TYPE may be: b create a block (buffered) special file c, u create a character (unbuffered) special file p create a FIFO Report bugs to bug-coreutils@gnu.org. [root@rac2 ~]# cd /dev/mapper [root@rac2 mapper]# mknod rootvg-lvocr b 253 0 [root@rac2 mapper]# ls -l total 0 crw------- 1 root root 10, 63 Jul 28 14:38 control brw-r--r-- 1 root root 253, 0 Jul 28 18:09 rootvg-lvocr [root@rac2 mapper]# vgdisplay No volume groups found 將兩個節點系統重啟： 在節點2 執行以下操作： [root@rac2 mapper]# vgimport rootvg /dev/cdrom: open failed: Read-only file system /dev/cdrom: open failed: Read-only file system Attempt to close device '/dev/cdrom' which is not open. Volume group "rootvg" is not exported [root@rac2 mapper]# ls control rootvg-lvocr [root@rac2 mapper]# vgchange -a n rootvg 0 logical volume(s) in volume group "rootvg" now active [root@rac2 mapper]# vgchange -a y rootvg 1 logical volume(s) in volume group "rootvg" now active [root@rac2 mapper]# lvdisplay --- Logical volume --- LV Name /dev/rootvg/lvocr VG Name rootvg LV UUID OrIiVb-Z8Bu-zWdB-VPUq-2BaK-oBdR-i3rHPn LV Write Access read/write LV Status available # open 0 LV Size 500.00 MB Current LE 125 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:0 [root@rac2 mapper]# vgdisplay rootvg --- Volume group --- VG Name rootvg System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 0 Max PV 0 Cur PV 1 Act PV 1 VG Size 4.00 GB PE Size 4.00 MB Total PE 1023 Alloc PE / Size 125 / 500.00 MB Free PE / Size 898 / 3.51 GB VG UUID 1Mst0z-ZAmU-0uAp-vQC2-z1vD-ZABs-tc6I8f 在RAC2上建立一個lvm [root@rac2 mapper]# lvcreate -L 500m -n lvora rootvg Logical volume "lvora" created [root@rac2 mapper]# ls -l total 0 crw------- 1 root root 10, 63 Jul 28 14:38 control brw-r--r-- 1 root root 253, 0 Jul 28 18:09 rootvg-lvocr brw-rw---- 1 root disk 253, 1 Jul 28 18:16 rootvg-lvora [root@rac2 mapper]# 在RAC1 激活lvm [root@rac1 mapper]# ls -l total 0 crw------- 1 root root 10, 63 Jul 28 14:37 control brw-rw---- 1 root disk 253, 0 Jul 28 17:44 rootvg-lvocr [root@rac1 mapper]# mknod rootvg-lvora b 253 1 [root@rac1 mapper]# ls -l total 0 crw------- 1 root root 10, 63 Jul 28 14:37 control brw-rw---- 1 root disk 253, 0 Jul 28 17:44 rootvg-lvocr brw-r--r-- 1 root root 253, 1 Jul 28 18:17 rootvg-lvora [root@rac1 mapper]# vgchange -a n rootvg 0 logical volume(s) in volume group "rootvg" now active [root@rac1 mapper]# vgchange -a y rootvg 2 logical volume(s) in volume group "rootvg" now active [root@rac1 mapper]# lvdisplay --- Logical volume --- LV Name /dev/rootvg/lvocr VG Name rootvg LV UUID OrIiVb-Z8Bu-zWdB-VPUq-2BaK-oBdR-i3rHPn LV Write Access read/write LV Status available # open 0 LV Size 500.00 MB Current LE 125 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:0 --- Logical volume --- LV Name /dev/rootvg/lvora VG Name rootvg LV UUID hmI83p-e0p0-bznb-IoT2-Er1j-6zzw-OM4Li4 LV Write Access read/write LV Status available # open 0 LV Size 500.00 MB Current LE 125 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:1 [root@rac1 mapper]#

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Tags: linux system 系統