Rhel6.6---執行命令df -h卡住不動

問題描述

nfs服務宕掉後，df -h卡住不動，使用xftp也沒法打開文檔路徑

-bash-4.1# mount
/dev/mapper/vg_root-LogVol00 on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
tmpfs on /dev/shm type tmpfs (rw)
/dev/sda1 on /boot type ext4 (rw)
/dev/mapper/vg_data-LV11408 on /myinst type ext4 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
/dev/sdc1 on /backup type ext4 (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
10.23.134.9:/myinst/nfsback on /nfsbackup type nfs (rw,vers=4,addr=10.23.134.9,clientaddr=10.23.111.140)

發現/nfsbackup目錄已經不存在，且nfs進程已經中止。卸載設備後正常。

-bash-4.1# umount -l /nfsbackup