检查备份，就会报错ORA-27072：Backup Piece       45635  11-JUN-22          /oraclebackup/arc_890vodkb_39177_1_1-20220611.bak

Backup Set           37675  12-JUN-22

Backup Piece       45641  12-JUN-22          /oraclebackup/arc_8j0vr20e_39187_1_1-20220612.bak

RMAN-00571: ===========================================================

RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============

RMAN-00571: ===========================================================

RMAN-03009: failure of delete command on ORA_DISK_1 channel at 07/19/2022 10:50:20

ORA-19587: error occurred reading 1024 bytes at block number 1

ORA-27072: File I/O error

Linux-x86_64 Error: 5: Input/output error

Additional information: 4

Additional information: 1

Additional information: 4294967295

ORA-27047: unable to read the header block of file

Linux-x86_64 Error: 5: Input/output error

Additional information: 3

进入对应的目录，就报：

cd expbak

-bash: cd: expbak: Structure needs cleaning

看来是文件系统出现问题，

处理办法：

1)df -t 查看出错的挂载点对应的文件系统和文件系统类型

       [root@easdb1 ~]# df -hT /oraclebackup/

Filesystem           Type  Size  Used Avail Use% Mounted on

/dev/mapper/oraback1 ext4  900G   43G  813G   5% /oraclebackup

2)umount这个文件系统

比如:umount /dev/mapper/oraback1

3)进行修复

fsck.ext4  /dev/mapper/oraback1

修复后，问题解决。