檢查備份，就會報錯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
進入對應的目錄，就報：
cd expbak
-bash: cd: expbak: Structure needs cleaning
看來是文件系統(tǒng)出現(xiàn)問題，
處理辦法：
1)df -t 查看出錯的掛載點對應的文件系統(tǒng)和文件系統(tǒng)類型
[root@easdb1 ~]# df -hT /oraclebackup/
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/oraback1 ext4 900G 43G 813G 5% /oraclebackup


2)umount這個文件系統(tǒng)

比如:umount /dev/mapper/oraback1

3)進行修復

fsck.ext4 /dev/mapper/oraback1

修復后，問題解決。