diff options
Diffstat (limited to 'doc/kernel/delay.txt')
| -rw-r--r-- | doc/kernel/delay.txt | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/doc/kernel/delay.txt b/doc/kernel/delay.txt index 15adc55..4b1d22a 100644 --- a/doc/kernel/delay.txt +++ b/doc/kernel/delay.txt @@ -8,6 +8,7 @@ Parameters: <device> <offset> <delay> [<write_device> <write_offset> <write_delay>] With separate write parameters, the first set is only used for reads. +Offsets are specified in sectors. Delays are specified in milliseconds. Example scripts @@ -15,12 +16,12 @@ Example scripts [[ #!/bin/sh # Create device delaying rw operation for 500ms -echo "0 `blockdev --getsize $1` delay $1 0 500" | dmsetup create delayed +echo "0 `blockdev --getsz $1` delay $1 0 500" | dmsetup create delayed ]] [[ #!/bin/sh # Create device delaying only write operation for 500ms and # splitting reads and writes to different devices $1 $2 -echo "0 `blockdev --getsize $1` delay $1 0 0 $2 0 500" | dmsetup create delayed +echo "0 `blockdev --getsz $1` delay $1 0 0 $2 0 500" | dmsetup create delayed ]] |