3 # To do: switch to blkzone once blkzone reset works correctly.
5 #blkzone=$(type -p blkzone 2>/dev/null)
6 zbc_report_zones=$(type -p zbc_report_zones 2>/dev/null)
7 zbc_reset_zone=$(type -p zbc_reset_zone 2>/dev/null)
8 if [ -z "${blkzone}" ] &&
9 { [ -z "${zbc_report_zones}" ] || [ -z "${zbc_reset_zone}" ]; }; then
10 echo "Error: neither blkzone nor zbc_report_zones is available"
14 # Reports the starting sector and length of the first sequential zone of device
16 first_sequential_zone() {
19 if [ -n "${blkzone}" ]; then
20 ${blkzone} report "$dev" |
21 sed -n 's/^[[:blank:]]*start:[[:blank:]]\([0-9a-zA-Z]*\),[[:blank:]]len[[:blank:]]\([0-9a-zA-Z]*\),.*type:[[:blank:]]2(.*/\1 \2/p' |
23 read -r starting_sector length &&
24 # Convert from hex to decimal
25 echo $((starting_sector)) $((length))
28 ${zbc_report_zones} "$dev" |
29 sed -n 's/^Zone [0-9]*: type 0x2 .*, sector \([0-9]*\), \([0-9]*\) sectors,.*$/\1 \2/p' |
37 if [ -n "${blkzone}" ]; then
38 # To do: query the maximum number of open zones using sg_raw
41 ${zbc_report_zones} "$dev" |
42 sed -n 's/^[[:blank:]]*Maximum number of open sequential write required zones:[[:blank:]]*//p'
46 # Reset the write pointer of one zone on device $1 at offset $2. The offset
47 # must be specified in units of 512 byte sectors. Offset -1 means reset all
50 local dev=$1 offset=$2 sectors
52 if [ -n "${blkzone}" ]; then
53 if [ "$offset" -lt 0 ]; then
54 sectors=$(<"/sys/class/block/${dev#/dev/}/size")
55 ${blkzone} reset -o "${offset}" -l "$sectors" "$dev"
57 ${blkzone} reset -o "${offset}" -c 1 "$dev"
60 if [ "$offset" -lt 0 ]; then
61 ${zbc_reset_zone} -all "$dev" "${offset}" >/dev/null
63 ${zbc_reset_zone} -sector "$dev" "${offset}" >/dev/null
68 # Extract the number of bytes that have been transferred from a line like
69 # READ: bw=6847KiB/s (7011kB/s), 6847KiB/s-6847KiB/s (7011kB/s-7011kB/s), io=257MiB (269MB), run=38406-38406msec
71 sed -n 's/^[[:blank:]]*'"$1"'.*, io=\([^[:blank:]]*\).*/\1/p' |
75 # Parse <number>.<number><suffix> into n1, n2 and s. See also
78 n1=${io%${io##*([0-9])}}
79 s=${io#${io%%*([a-zA-Z])}}
91 [ -n "$n1" ] || return 1
92 echo $(((n1 << m) + (n2 << m) / 1000))
105 sed -n 's/^.*write:[^;]*; \([0-9]*\) zone resets$/\1/p'