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Tag Archives: create ioctl failed
Truecrypt woes
Background
Solving disk problems is a little more complicated when devices are encrypted. You need to keep in mind that a filesystem on an encrypted device can’t be seen unless the device is decrypted. Here is a few problems I’ve come in touch with, together with solutions that have worked for me.
Error unmounting a volume
Error message which may occur when trying to unmount truecrypt volume:
device-mapper: create ioctl failed: Device or resource busy
Trying to remove the volume with cryptsetup gives a similar message:
sudo cryptsetup remove /dev/mapper/truecrypt1
Device /dev/mapper/truecrypt1 is busy.
Device /dev/mapper/truecrypt1 is busy.
As the error messages implies, something is keeping the volume open. If lsof doesn’t show anything, it might be an active NFS export keeping it busy.
Posted in Linux
Tagged 2011, create ioctl failed, cryptsetup, fsck, linux, mount, nfs, truecrypt
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