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https://github.com/ceph/ceph
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3aae5ca6fd
/bin/bash is a Linuxism. Other operating systems install bash to different paths. Use /usr/bin/env in shebangs to find bash. Signed-off-by: Alan Somers <asomers@gmail.com>
46 lines
793 B
Bash
Executable File
46 lines
793 B
Bash
Executable File
#!/usr/bin/env bash
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set -ex
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RUN_TIME=300 # approximate duration of run (seconds)
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[ $# -eq 1 ] && RUN_TIME="$1"
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IMAGE_NAME="image-$$"
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IMAGE_SIZE="1024" # MB
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function get_time() {
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date '+%s'
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}
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function times_up() {
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local end_time="$1"
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test $(get_time) -ge "${end_time}"
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}
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function map_unmap() {
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[ $# -eq 1 ] || exit 99
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local image_name="$1"
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local dev
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dev="$(sudo rbd map "${image_name}")"
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sudo rbd unmap "${dev}"
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}
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#### Start
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rbd create "${IMAGE_NAME}" --size="${IMAGE_SIZE}"
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COUNT=0
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START_TIME=$(get_time)
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END_TIME=$(expr $(get_time) + ${RUN_TIME})
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while ! times_up "${END_TIME}"; do
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map_unmap "${IMAGE_NAME}"
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COUNT=$(expr $COUNT + 1)
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done
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ELAPSED=$(expr "$(get_time)" - "${START_TIME}")
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rbd rm "${IMAGE_NAME}"
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echo "${COUNT} iterations completed in ${ELAPSED} seconds"
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