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Diffstat (limited to 'examples/sg_unmap_example.txt')
| -rw-r--r-- | examples/sg_unmap_example.txt | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/examples/sg_unmap_example.txt b/examples/sg_unmap_example.txt new file mode 100644 index 00000000..2b07dbae --- /dev/null +++ b/examples/sg_unmap_example.txt @@ -0,0 +1,40 @@ +# 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 |