1*44704f69SBart Van Assche# sg_unmap_example.txt 2*44704f69SBart Van Assche# This is an example of the contents of a file that can be given to sg_unmap 3*44704f69SBart Van Assche# For example, assume the /dev/sdc is a scratch disk (e.g. one made by the 4*44704f69SBart Van Assche# scsi_debug kernel module) then: 5*44704f69SBart Van Assche# sg_unmap --in=sg_unmap_example.txt /dev/sdc 6*44704f69SBart Van Assche 7*44704f69SBart Van Assche0x12345677,1 # unmap LBA 0x12345677 8*44704f69SBart Van Assche0x12345678 2 # unmap LBA 0x12345678 and 0x12345679 9*44704f69SBart Van Assche0x12340000 3333 # unmap 3333 blocks starting at LBA 0x12340000 10*44704f69SBart Van Assche 11*44704f69SBart Van Assche0X5a5a5a5a5a 0 # unmaps 0 blocks (i.e. does nothing) 12*44704f69SBart Van Assche 13*44704f69SBart Van Assche a5a5a5h 14*44704f69SBart Van Assche7 # unmap 7 blocks starting at LBA 0xa5a5a5 15*44704f69SBart Van Assche 16*44704f69SBart Van Assche# Note that there can be leading and trailing whitespace and whitespace 17*44704f69SBart Van Assche# (plus comma) can be a separator. 18*44704f69SBart Van Assche# 19*44704f69SBart Van Assche# Example invocation: 20*44704f69SBart Van Assche# $ sg_unmap --in=../examples/sg_unmap_example.txt -vv /dev/sdc 21*44704f69SBart Van Assche# open /dev/sg2 with flags=0x802 22*44704f69SBart Van Assche# unmap cdb: 42 00 00 00 00 00 00 00 58 00 23*44704f69SBart Van Assche# unmap parameter list: 24*44704f69SBart Van Assche# 00 56 00 50 00 00 00 00 00 00 00 00 12 34 56 77 25*44704f69SBart Van Assche# 00 00 00 01 00 00 00 00 00 00 00 00 12 34 56 78 26*44704f69SBart Van Assche# 00 00 00 02 00 00 00 00 00 00 00 00 12 34 00 00 27*44704f69SBart Van Assche# 00 00 0d 05 00 00 00 00 00 00 00 5a 5a 5a 5a 5a 28*44704f69SBart Van Assche# 00 00 00 00 00 00 00 00 00 00 00 00 00 a5 a5 a5 29*44704f69SBart Van Assche# 00 00 00 07 00 00 00 00 30*44704f69SBart Van Assche# sg_cmds_process_resp: slen=18 31*44704f69SBart Van Assche# unmap: Fixed format, current; Sense key: Illegal Request 32*44704f69SBart Van Assche# Additional sense: Invalid command operation code 33*44704f69SBart Van Assche# Raw sense data (in hex): 34*44704f69SBart Van Assche# 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 35*44704f69SBart Van Assche# 00 00 36*44704f69SBart Van Assche# UNMAP not supported 37*44704f69SBart Van Assche# 38*44704f69SBart Van Assche# -------------------------------------------------------- 39*44704f69SBart Van Assche# Notice the 8 byte header then 5 descriptors in the parameter 40*44704f69SBart Van Assche# list 41