linux 出现结构需要清理-Structure needs cleaning

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。