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今天 RMAN 备份恢复的时候发现磁盘空间不足了： bash ORA-19502: write error on file "/oradata/rpt/tbsods04.dbf", block number 2921152 block size=8192 ORA-27072: File I/O error Linux-x8664 Error: 28: No space left on device
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今天 RMAN 备份恢复的时候发现磁盘空间不足了：
1ORA-19502: write error on file "/oradata/rpt/tbs_ods04.dbf", block number 2921152 (block size=8192)2ORA-27072: File I/O error3Linux-x86_64 Error: 28: No space left on device4Additional information: 45Additional information: 29211526Additional information: -1看一下磁盘空间：
1[oracle@lucifer:/home/oracle]$ df -h 2Filesystem Size Used Avail Use% Mounted on3devtmpfs 16G 0 16G 0% /dev4tmpfs 32G 0 32G 0% /dev/shm5tmpfs 16G 25M 16G 1% /run6tmpfs 16G 0 16G 0% /sys/fs/cgroup7/dev/mapper/centos-root 1008G 982G 26G 98% /8/dev/sda2 1014M 142M 873M 14% /boot9/dev/sda1 200M 12M 189M 6% /boot/efi10tmpfs 3.2G 0 3.2G 0% /run/user/0根目录空间不够用了，需要扩容，这是一台虚拟机，找系统工程师加了 1T 空间，手动在系统上进行扩容，记录一下操作过程。
虚拟化加完空间后，需要重启主机生效：
1## reboot 之前2[oracle@lucifer:/home/oracle]$ lsblk3NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT4sda 8:0 0 1T 0 disk5├─sda1 8:1 0 200M 0 part /boot/efi6├─sda2 8:2 0 1G 0 part /boot7└─sda3 8:3 0 1022.8G 0 part8 ├─centos-root 253:0 0 1007.1G 0 lvm /9 └─centos-swap 253:1 0 15.8G 0 lvm [SWAP]10sr0 11:0 1 1.2M 0 rom1112## reboot 之后13[root@lucifer:/root]# lsblk14NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT15sda 8:0 0 2T 0 disk16├─sda1 8:1 0 200M 0 part /boot/efi17├─sda2 8:2 0 1G 0 part /boot18└─sda3 8:3 0 1022.8G 0 part19 ├─centos-root 253:0 0 1007.1G 0 lvm /20 └─centos-swap 253:1 0 15.8G 0 lvm [SWAP]21sr0 11:0 1 1.2M 0 rom可以看到磁盘空间已经加到 /dev/sda 上，现在是 2T，但是需要扩容到根目录上，还需要操作下，本文使用 parted 命令进行扩容。
扩展GPT分区：
1## 修复 GPT 备份表位置，扩展分区 3 到磁盘末尾2[root@lucifer:/root]# parted /dev/sda resizepart 3 100%3Error: The backup GPT table is not at the end of the disk, as it should be. This might mean that another operating system believes the disk is smaller. Fix, by moving the backup to the end (and4removing the old backup)?5parted: invalid token: 36Fix/Ignore/Cancel? Fix7Warning: Not all of the space available to /dev/sda appears to be used, you can fix the GPT to use all of the space (an extra 2147483648 blocks) or continue with the current setting?8Fix/Ignore? Fix9Partition number? 310End? [1100GB]? 100%11Information: You may need to update /etc/fstab.刷新分区表：
1## 通知内核分区表已变更2[root@lucifer:/root]# partprobe /dev/sda34[root@lucifer:/root]# lsblk5NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT6sda 8:0 0 2T 0 disk7├─sda1 8:1 0 200M 0 part /boot/efi8├─sda2 8:2 0 1G 0 part /boot9└─sda3 8:3 0 2T 0 part10 ├─centos-root 253:0 0 1007.1G 0 lvm /11 └─centos-swap 253:1 0 15.8G 0 lvm [SWAP]12sr0 11:0 1 1.2M 0 rom扩展物理卷：
1## 让 LVM 识别新的分区大小2[root@lucifer:/root]# pvresize /dev/sda33 Physical volume "/dev/sda3" changed4 1 physical volume(s) resized or updated / 0 physical volume(s) not resized扩展逻辑卷：
1## 使用所有可用空间扩展根分区逻辑卷2[root@lucifer:/root]# lvextend -l +100%FREE /dev/mapper/centos-root3 Size of logical volume centos/root changed from 1007.05 GiB (257805 extents) to 1.98 TiB (519949 extents).4 Logical volume centos/root successfully resized.扩展文件系统：
1## 在线扩展XFS文件系统2[root@lucifer:/root]# xfs_growfs /3meta-data=/dev/mapper/centos-root isize=512 agcount=81, agsize=3276800 blks4 = sectsz=4096 attr=2, projid32bit=15 = crc=1 finobt=0 spinodes=06data = bsize=4096 blocks=263992320, imaxpct=257 = sunit=0 swidth=0 blks8naming =version 2 bsize=4096 ascii-ci=0 ftype=19log =internal bsize=4096 blocks=6400, version=210 = sectsz=4096 sunit=1 blks, lazy-count=111realtime =none extsz=4096 blocks=0, rtextents=012data blocks changed from 263992320 to 532427776验证结果：
1[root@lucifer:/root]# df -h2Filesystem Size Used Avail Use% Mounted on3devtmpfs 16G 0 16G 0% /dev4tmpfs 32G 0 32G 0% /dev/shm5tmpfs 16G 8.4M 16G 1% /run6tmpfs 16G 0 16G 0% /sys/fs/cgroup7/dev/mapper/centos-root 2.0T 711G 1.3T 35% /8/dev/sda2 1014M 142M 873M 14% /boot9/dev/sda1 200M 12M 189M 6% /boot/efi10tmpfs 3.2G 0 3.2G 0% /run/user/01112[root@lucifer:/root]# lsblk13NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT14sda 8:0 0 2T 0 disk15├─sda1 8:1 0 200M 0 part /boot/efi16├─sda2 8:2 0 1G 0 part /boot17└─sda3 8:3 0 2T 0 part18 ├─centos-root 253:0 0 2T 0 lvm /19 └─centos-swap 253:1 0 15.8G 0 lvm [SWAP]20sr0 11:0 1 1.2M 0 rom可以看到：根目录从 1008G 成功扩展到 2.0 T。
本文比较基础简单，仅做记录参考。