Posted Jan 17, 2008 11:42 UTC (Thu) by firstname.lastname@example.org (guest, #38022)
Parent article: State of the unionfs
Not being a specialist, what is the real advantage of using unionfs compared to having a
small partition - lets call it /mnt/disk and a CDROM mounted as /mnt/cdrom - then doing a "cp
-lR /mnt/cdrom /mnt/disk"?
That is, using links to all the files. A link will not use a lot of space in the filesystem,
and solve the complex problem of mapping file attributes of different filesystem (how to deal
with r/w/x access restriction if the underlying filesystem is FAT, how to map a device onto a
FAT or ISOFS filesystem, how to deal with soft/hard links, how to deal with a file from the
source filesystem too big for the target filesystem...).