1.现在是想把新买的是/dev/vdc，扩到/u01空间上，但是/u01不是逻辑卷，无法直接加上。
2.这个机器是一个dg备库，发现数据量79G,归档32G。
3.考虑将新的磁盘创建pv，然后直接mount到新目录，将归档指向新的磁盘。
[root@iz2zeezinabu7k6olgelwez ~]# vgdisplay
[root@iz2zeezinabu7k6olgelwez ~]# fdisk -l
Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x0000efd2
Device Boot Start End Blocks Id System
/dev/vda1 * 2048 83886079 41942016 83 Linux
Disk /dev/vdb: 214.7 GB, 214748364800 bytes, 419430400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0xc2b6cf82
Device Boot Start End Blocks Id System
/dev/vdb1 2048 419430399 209714176 83 Linux
Disk /dev/vdc: 214.7 GB, 214748364800 bytes, 419430400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
[root@iz2zeezinabu7k6olgelwez ~]# df -Th
Filesystem Type Size Used Avail Use% Mounted on
/dev/vda1 ext3 40G 30G 7.6G 80% /
devtmpfs devtmpfs 24G 0 24G 0% /dev
tmpfs tmpfs 24G 0 24G 0% /dev/shm
tmpfs tmpfs 24G 1.2M 24G 1% /run
tmpfs tmpfs 24G 0 24G 0% /sys/fs/cgroup
/dev/vdb1 ext4 197G 183G 4.0G 98% /u01
tmpfs tmpfs 4.8G 0 4.8G 0% /run/user/1001
tmpfs tmpfs 4.8G 0 4.8G 0% /run/user/0
tmpfs tmpfs 4.8G 0 4.8G 0% /run/user/1003
SQL> show parameter recover
NAME TYPE VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest string /u01/app/oracle/fast_recovery_area
[oracle@iz2zeezinabu7k6olgelwez oracle]$ du -sh *
1.3G admin
152K cfgtoollogs
4.0K checkpoints
2.9G diag
8.0K download
32G fast_recovery_area
79G oradata
432K oradiag_oracle
4.5G product
678M upload
--1.创建pv
# pvcreate /dev/vdc
--2.创建vg
vgcreate vg_oracle /dev/vdc
vgdisplay --查到 Total PE 51199
--3.创建lv
lvcreate -l 51199 -n lv_oracle vg_oracle
--查看lv信息
# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
LogVol_oracle VolGroup -wi-ao---- 100.00g
LogVol_root VolGroup -wi-ao---- 100.00g
lv_oracle vg_oracle -wi-a----- 5.82t
--4.格式化lv
mkfs.ext4 /dev/vg_oracle/lv_oracle
--5.挂载目录使用
# mkdir /u02
# /etc/fstab添加：
/dev/vg_oracle/lv_oracle /u02 ext4 defaults 0 0
# mount -a
--查看成功挂载的目录
# df -h /u02
6.
su - oracle
mkdir -p /u02/app/oracle/fast_recovery_area
--alter system set log_archive_dest='/u02/app/oracle/fast_recovery_area'
alter system set log_archive_dest_1='location=/u02/app/oracle/fast_recovery_area';