umount时目标忙解决办法

Posted 2022-11-06 涛子GE哥

在删除osd后umount时，始终无法umonut，可以通过fuser查看设备被哪个进程占用，之后杀死进程，就可以顺利umount了。

[root@node2 ~]#lsblk 
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    1   279G  0 disk 
├─sda1   8:1    1   300M  0 part /boot
├─sda2   8:2    1  15.6G  0 part [SWAP]
├─sda3   8:3    1   300M  0 part /boot/efi
├─sda4   8:4    1     1K  0 part 
└─sda5   8:5    1 262.8G  0 part /
sdb      8:16   1   447G  0 disk 
├─sdb1   8:17   1    14G  0 part 
sdc      8:64   1   3.7T  0 disk 
└─sdc1   8:65   1   3.7T  0 part /var/lib/ceph/osd/ceph-0
[root@node2 ~]#fuser -mv  /var/lib/ceph/osd/ceph-0
                     用户     进程号 权限   命令
/var/lib/ceph/osd/ceph-0:
                     root     kernel mount /var/lib/ceph/osd/ceph-0
                     root     1702 F...m ceph-osd
                     root     23257 ..c.. bash
[root@node2 ~]#kill -9 23257 1702
[root@node2 ~]#user -mv  /var/lib/ceph/osd/ceph-0
                     用户     进程号 权限   命令
/var/lib/ceph/osd/ceph-0:
                     root     kernel mount /var/lib/ceph/osd/ceph-0

[root@node2 ~]#umount /var/lib/ceph/osd/ceph-0

[root@node2 ~]#lsblk 
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    1   279G  0 disk 
├─sda1   8:1    1   300M  0 part /boot
├─sda2   8:2    1  15.6G  0 part [SWAP]
├─sda3   8:3    1   300M  0 part /boot/efi
├─sda4   8:4    1     1K  0 part 
└─sda5   8:5    1 262.8G  0 part /
sdb      8:16   1   447G  0 disk 
├─sdb1   8:17   1    14G  0 part 
sdc      8:64   1   3.7T  0 disk 
└─sdc1   8:65   1   3.7T  0 part