SCSI-3 Persist Reservation Command on Linux

Note: Linux sg3_utils packages are required.

To query all registrant keys for given device
#sg_persist -i -k -d /dev/sdd

To query all reservations for given device
#sg_persist -i -r -d /dev/sdd

To register
#sg_persist -o -G -S 123abc /dev/sdd

To clear all registrants
#sg_persist -C -K 123abc -o -d /dev/sdd

To reserve
#sg_persist -o -R -K 123abc -T 5 -d /dev/sdd

To release
#sg_persist -o -L -K 123abc -T 5 -d /dev/sdd

Common used reservation Types:
5 - Write Exclusive, registrants only
6 - Exclusive Access, registrants only