Yeap, as far as I can see there is support for it, that's good, unless I am
reading this wrong.
sg_persist --in --report-capabilities -v /dev/sdc
inquiry cdb: 12 00 00 00 24 00
NEXENTA COMSTAR 1.0
Peripheral device type: disk
Persistent Reservation In cmd: 5e 02 00 00 00 00 00 20 00 00
persistent reservation in: requested 8192 bytes but got 8 bytes
Report capabilities response:
Compatible Reservation Handling(CRH): 0
Specify Initiator Ports Capable(SIP_C): 1
All Target Ports Capable(ATP_C): 1
Persist Through Power Loss Capable(PTPL_C): 1
Type Mask Valid(TMV): 1
Allow commands: 0
Persist Through Power Loss Active(PTPL_A): 0
Support indicated in Type mask:
Write Exclusive, all registrants: 1
Exclusive Access, registrants only: 1
Write Exclusive, registrants only: 1
Exclusive Access: 1
Write Exclusive: 1
Exclusive Access, all registrants: 1
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