Examination Failed(Cannot unmount disk) Error

I – How To Solve “Examination Failed(Cannot unmount disk) Error” With Unmounting Volume With Qumount

II – 2.th Way To Unmount Volume Manually via SSH

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I – How To Solve “Examination Failed(Cannot unmount disk) Error” With Unmounting Volume With Qumount

If you got this error Message;

But Qnap returns with this error;

Level:  Error

[RAID5 Disk Volume: Drive 1 2 3] Examination failed(Cannot unmount disk).

 

II – How Unmount Volume Manually via SSH

You can unmount volume manually, and start check process;

For Old Firmware (3.8.0 – 4.0.5)

http://dev.mensfeld.pl/2013/08/qnap-nas-file-system-not-clean-examination-failed-cannot-unmount-disk/

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For New Firmware (4.1.0 and later) (64 Bit)
/etc/init.d/services.sh stop
/etc/init.d/opentftp.sh stop
/etc/init.d/Qthttpd.sh stop
umount /dev/mapper/cachedev1
e2fsck_64 -f -v -C 0 /dev/mapper/cachedev1
mount -t ext4 /dev/mapper/cachedev1 /share/CACHEDEV1_DATA
reboot
https://forum.qnap.com/viewtopic.php?t=123461

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For NewFirmware (4.1.0 and later) (32 Bit)
/etc/init.d/services.sh stop
/etc/init.d/opentftp.sh stop
/etc/init.d/Qthttpd.sh stop
/etc/init.d/rsnap.sh stop
umount /dev/mapper/cachedev1
e2fsck -f -v -C 0 /dev/mapper/cachedev1

 

Here is an examle;

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