| # sg_unmap_example.txt |
| # This is an example of the contents of a file that can be given to sg_unmap |
| # For example, assume the /dev/sdc is a scratch disk (e.g. one made by the |
| # scsi_debug kernel module) then: |
| # sg_unmap --in=sg_unmap_example.txt /dev/sdc |
| |
| 0x12345677,1 # unmap LBA 0x12345677 |
| 0x12345678 2 # unmap LBA 0x12345678 and 0x12345679 |
| 0x12340000 3333 # unmap 3333 blocks starting at LBA 0x12340000 |
| |
| 0X5a5a5a5a5a 0 # unmaps 0 blocks (i.e. does nothing) |
| |
| a5a5a5h |
| 7 # unmap 7 blocks starting at LBA 0xa5a5a5 |
| |
| # Note that there can be leading and trailing whitespace and whitespace |
| # (plus comma) can be a separator. |
| # |
| # Example invocation: |
| # $ sg_unmap --in=../examples/sg_unmap_example.txt -vv /dev/sdc |
| # open /dev/sg2 with flags=0x802 |
| # unmap cdb: 42 00 00 00 00 00 00 00 58 00 |
| # unmap parameter list: |
| # 00 56 00 50 00 00 00 00 00 00 00 00 12 34 56 77 |
| # 00 00 00 01 00 00 00 00 00 00 00 00 12 34 56 78 |
| # 00 00 00 02 00 00 00 00 00 00 00 00 12 34 00 00 |
| # 00 00 0d 05 00 00 00 00 00 00 00 5a 5a 5a 5a 5a |
| # 00 00 00 00 00 00 00 00 00 00 00 00 00 a5 a5 a5 |
| # 00 00 00 07 00 00 00 00 |
| # sg_cmds_process_resp: slen=18 |
| # unmap: Fixed format, current; Sense key: Illegal Request |
| # Additional sense: Invalid command operation code |
| # Raw sense data (in hex): |
| # 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 |
| # 00 00 |
| # UNMAP not supported |
| # |
| # -------------------------------------------------------- |
| # Notice the 8 byte header then 5 descriptors in the parameter |
| # list |
