Cool Kernel and Filesystems

5 - unmounting drives, especially CDROMs ...

Often I try to

[root@fulmination cdrom]# umount /mnt/cdrom/ umount: /mnt/cdrom: device is busy

to discover what nasty process is using the drive

[root@fulmination cdrom]# lsof | grep /mnt/cdrom bash 1234 root cwd DIR 3,64 2048 45056 /mnt/cdrom lsof 1275 root cwd DIR 3,64 2048 45056 /mnt/cdrom grep 1276 root cwd DIR 3,64 2048 45056 /mnt/cdrom lsof 1277 root cwd DIR 3,64 2048 45056 /mnt/cdrom ...

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