71 lines
1.4 KiB
Bash
Executable file
71 lines
1.4 KiB
Bash
Executable file
#!/bin/bash
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TS_TOPDIR="${0%/*}/../.."
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TS_DESC="drop page caches related to a file"
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. "$TS_TOPDIR"/functions.sh
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ts_init "$*"
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ts_check_test_command "$TS_CMD_FADVISE"
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ts_check_test_command "$TS_CMD_FINCORE"
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ts_check_test_command "$TS_CMD_FINDMNT"
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ts_check_prog "dd"
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ts_check_prog "sleep"
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ts_cd "$TS_OUTDIR"
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FILE="ddtest"
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BS=65536
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COUNT=8
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FS="$("$TS_CMD_FINDMNT" -nr -o FSTYPE -T "$PWD")"
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if [[ "$FS" = "tmpfs" || "$FS" = "overlay" || "$FS" = "" ]]; then
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ts_skip "fincore does not work on tmpfs or unknown fs"
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fi
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create_file() {
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dd if=/dev/zero of="$FILE" bs=$BS count=$COUNT conv=fsync >& /dev/null
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}
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do_fincore() {
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"$TS_CMD_FINCORE" -o RES,SIZE,FILE "$FILE"
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}
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{
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create_file
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do_fincore
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echo
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create_file
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echo "whole file"
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"$TS_CMD_FADVISE" "$FILE"
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echo status: $?
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do_fincore
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echo
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create_file
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echo "offset: $(( 2 * $BS ))"
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"$TS_CMD_FADVISE" -o $(( 2 * $BS )) "$FILE"
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echo status: $?
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do_fincore
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echo
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create_file
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echo "length: $(( 4 * $BS ))"
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"$TS_CMD_FADVISE" -l $(( 4 * $BS )) "$FILE"
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echo status: $?
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do_fincore
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echo
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create_file
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echo "offset: $(( 2 * $BS )), length: $(( 4 * $BS )) fd: 42"
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"$TS_CMD_FADVISE" -o $(( 2 * $BS )) -l $(( 4 * $BS )) --fd 42 42<"$FILE"
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echo status: $?
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do_fincore
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echo
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rm "$FILE"
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} >> "$TS_OUTPUT" 2>> "$TS_ERRLOG"
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ts_finalize
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