3 blkzone=$(type -p blkzone 2>/dev/null)
4 sg_inq=$(type -p sg_inq 2>/dev/null)
5 zbc_report_zones=$(type -p zbc_report_zones 2>/dev/null)
6 zbc_reset_zone=$(type -p zbc_reset_zone 2>/dev/null)
7 if [ -z "${blkzone}" ] &&
8 { [ -z "${zbc_report_zones}" ] || [ -z "${zbc_reset_zone}" ]; }; then
9 echo "Error: neither blkzone nor zbc_report_zones is available"
13 # Reports the starting sector and length of the first sequential zone of device
15 first_sequential_zone() {
18 if [ -n "${blkzone}" ]; then
19 ${blkzone} report "$dev" |
20 sed -n 's/^[[:blank:]]*start:[[:blank:]]\([0-9a-zA-Z]*\),[[:blank:]]len[[:blank:]]\([0-9a-zA-Z]*\),.*type:[[:blank:]]2(.*/\1 \2/p' |
22 read -r starting_sector length &&
23 # Convert from hex to decimal
24 echo $((starting_sector)) $((length))
27 ${zbc_report_zones} "$dev" |
28 sed -n 's/^Zone [0-9]*: type 0x2 .*, sector \([0-9]*\), \([0-9]*\) sectors,.*$/\1 \2/p' |
36 if [ -n "${sg_inq}" ]; then
37 if ! ${sg_inq} -e --page=0xB6 --len=20 --hex "$dev" 2> /dev/null; then
38 # Non scsi device such as null_blk can not return max open zones.
42 ${sg_inq} -e --page=0xB6 --len=20 --hex "$dev" | tail -1 |
44 read -r offset b0 b1 b2 b3 trailer || return $?
45 # Convert from hex to decimal
46 max_nr_open_zones=$((0x${b0}))
47 max_nr_open_zones=$((max_nr_open_zones * 256 + 0x${b1}))
48 max_nr_open_zones=$((max_nr_open_zones * 256 + 0x${b2}))
49 max_nr_open_zones=$((max_nr_open_zones * 256 + 0x${b3}))
50 echo ${max_nr_open_zones}
54 ${zbc_report_zones} "$dev" |
55 sed -n 's/^[[:blank:]]*Maximum number of open sequential write required zones:[[:blank:]]*//p'
59 # Reset the write pointer of one zone on device $1 at offset $2. The offset
60 # must be specified in units of 512 byte sectors. Offset -1 means reset all
63 local dev=$1 offset=$2 sectors
65 if [ -n "${blkzone}" ]; then
66 if [ "$offset" -lt 0 ]; then
67 sectors=$(<"/sys/class/block/${dev#/dev/}/size")
68 ${blkzone} reset -o "${offset}" -l "$sectors" "$dev"
70 ${blkzone} reset -o "${offset}" -c 1 "$dev"
73 if [ "$offset" -lt 0 ]; then
74 ${zbc_reset_zone} -all "$dev" "${offset}" >/dev/null
76 ${zbc_reset_zone} -sector "$dev" "${offset}" >/dev/null
81 # Extract the number of bytes that have been transferred from a line like
82 # READ: bw=6847KiB/s (7011kB/s), 6847KiB/s-6847KiB/s (7011kB/s-7011kB/s), io=257MiB (269MB), run=38406-38406msec
84 sed -n 's/^[[:blank:]]*'"$1"'.*, io=\([^[:blank:]]*\).*/\1/p' |
88 # Parse <number>.<number><suffix> into n1, n2 and s. See also
91 n1=${io%${io##*([0-9])}}
92 s=${io#${io%%*([a-zA-Z])}}
104 [ -n "$n1" ] || return 1
105 echo $(((n1 << m) + (n2 << m) / 1000))
120 count=$(sed -n 's/^.*write:[^;]*; \([0-9]*\) zone resets$/\1/p')