Hi.. I am currently doing a project on Virtual tape device for Open Solaris
along with a couple of my friends at Sun Microsystems. We are trying to
simulate the tape device systems which is used in companies to take data
backups. The idea is that we should be able to use hard drives/flash drives and
make them behave as a tape device. For this we are writing a pseudo tape device
driver and using the LDI (Layered Driver Interface) to communicate with the
hard disk/ flash disk. The media which we use is abstracted from the pseudo
device driver by the LDI interface. We are writing a header which keeps track
of the current read and write head and several other data. We should make
changes in the header after every read/write/ioctl operation. For this we
should perform 'seek' operations on the read/write head of the hard disk to
move from the data back up area and the header. Since this is in the kernel
level fseek functions will not be of any use. Can anyone kindly help me by
suggesting any solution to our problem?
Thank you in advance,
Rashmi
Campus Ambassador,
BMSCE,
Bangalore.
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