#
# Copyright (c) 2020 by Lawrence Livermore National Security, LLC.
# Copyright (c) 2021 by The FreeBSD Foundation.
+# Copyright (c) 2022 by Delphix. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
# 1. Create a dense file
# 2. Punch an assortment of holes in the file and verify the result.
#
+# Note: We can't compare exact block numbers as reported by du, because
+# different backing stores may allocate different numbers of blocks for
+# the same amount of data.
+#
verify_runnable "global"
[[ -e $TESTDIR ]] && log_must rm -f $FILE
}
-function check_reported_size
+function get_reported_size
{
- typeset expected_size=$1
-
- if ! [ -e "${FILE}" ]; then
+ if ! [ -e "$FILE" ]; then
log_fail "$FILE does not exist"
fi
-
- reported_size=$(du "${FILE}" | awk '{print $1}')
- if [ "$reported_size" != "$expected_size" ]; then
- log_fail "Incorrect reported size: $reported_size != $expected_size"
- fi
+
+ sync_pool $TESTPOOL >/dev/null 2>&1
+ du "$FILE" | awk '{print $1}'
}
function check_apparent_size
{
typeset expected_size=$1
- apparent_size=$(stat_size "${FILE}")
+ apparent_size=$(stat_size "$FILE")
if [ "$apparent_size" != "$expected_size" ]; then
- log_fail "Incorrect apparent size: $apparent_size != $expected_size"
+ log_fail \
+ "Incorrect apparent size: $apparent_size != $expected_size"
fi
}
# Create a dense file and check it is the correct size.
log_must file_write -o create -f $FILE -b $BLKSZ -c 8
-sync_pool $TESTPOOL
-log_must check_reported_size 1027
+full_size=$(get_reported_size)
-# Punch a hole for the first full block.
+# Punch a hole for the first full block. The reported size should decrease.
log_must punch_hole 0 $BLKSZ $FILE
-sync_pool $TESTPOOL
-log_must check_reported_size 899
+one_hole=$(get_reported_size)
+[[ $full_size -gt $one_hole ]] || log_fail \
+ "One hole failure: $full_size -> $one_hole"
-# Partially punch a hole in the second block.
+# Partially punch a hole in the second block. The reported size should
+# remain constant.
log_must punch_hole $BLKSZ $((BLKSZ / 2)) $FILE
-sync_pool $TESTPOOL
-log_must check_reported_size 899
+partial_hole=$(get_reported_size)
+[[ $one_hole -eq $partial_hole ]] || log_fail \
+ "Partial hole failure: $one_hole -> $partial_hole"
-# Punch a hole which overlaps the third and fourth block.
+# Punch a hole which overlaps the third and fourth block. The reported size
+# should remain constant.
log_must punch_hole $(((BLKSZ * 2) + (BLKSZ / 2))) $((BLKSZ)) $FILE
-sync_pool $TESTPOOL
-log_must check_reported_size 899
+overlap_hole=$(get_reported_size)
+[[ $one_hole -eq $overlap_hole ]] || log_fail \
+ "Overlap hole failure: $one_hole -> $overlap_hole"
-# Punch a hole from the fifth block past the end of file. The apparent
-# file size should not change since --keep-size is implied.
+# Punch a hole from the fifth block past the end of file. The reported size
+# should decrease, and the apparent file size should not change since
+# --keep-size is implied.
apparent_size=$(stat_size $FILE)
log_must punch_hole $((BLKSZ * 4)) $((BLKSZ * 10)) $FILE
-sync_pool $TESTPOOL
-log_must check_reported_size 387
+eof_hole=$(get_reported_size)
+[[ $overlap_hole -gt $eof_hole ]] || log_fail \
+ "EOF hole failure: $overlap_hole -> $eof_hole"
log_must check_apparent_size $apparent_size
log_pass "Ensure holes can be punched in files making them sparse"
#
# Copyright (c) 2020 by Lawrence Livermore National Security, LLC.
# Copyright (c) 2021 by The FreeBSD Foundation.
+# Copyright (c) 2022 by Delphix. All rights reserved.
#
. $STF_SUITE/include/libtest.shlib
# 1. Create a dense file
# 2. Zero various ranges in the file and verify the result.
#
+# Note: We can't compare exact block numbers as reported by du, because
+# different backing stores may allocate different numbers of blocks for
+# the same amount of data.
+#
verify_runnable "global"
[[ -e $TESTDIR ]] && log_must rm -f $FILE
}
-# Helpfully, this function expects kilobytes, and check_apparent_size expects bytes.
-function check_reported_size
+function get_reported_size
{
- typeset expected_size=$1
-
- if ! [ -e "${FILE}" ]; then
+ if ! [ -e "$FILE" ]; then
log_fail "$FILE does not exist"
fi
-
- reported_size=$(du "${FILE}" | awk '{print $1}')
- if [ "$reported_size" != "$expected_size" ]; then
- log_fail "Incorrect reported size: $reported_size != $expected_size"
- fi
+
+ sync_pool $TESTPOOL >/dev/null 2>&1
+ du "$FILE" | awk '{print $1}'
}
function check_apparent_size
{
typeset expected_size=$1
- apparent_size=$(stat_size "${FILE}")
+ apparent_size=$(stat_size "$FILE")
if [ "$apparent_size" != "$expected_size" ]; then
- log_fail "Incorrect apparent size: $apparent_size != $expected_size"
+ log_fail \
+ "Incorrect apparent size: $apparent_size != $expected_size"
fi
}
# Create a dense file and check it is the correct size.
log_must file_write -o create -f $FILE -b $BLKSZ -c 8
sync_pool $TESTPOOL
-log_must check_reported_size 1027
+full_size=$(get_reported_size)
-# Zero a range covering the first full block.
+# Zero a range covering the first full block. The reported size should decrease.
log_must zero_range 0 $BLKSZ $FILE
-sync_pool $TESTPOOL
-log_must check_reported_size 899
+one_range=$(get_reported_size)
+[[ $full_size -gt $one_range ]] || log_fail \
+ "One range failure: $full_size -> $one_range"
-# Partially zero a range in the second block.
+# Partially zero a range in the second block. The reported size should
+# remain constant.
log_must zero_range $BLKSZ $((BLKSZ / 2)) $FILE
-sync_pool $TESTPOOL
-log_must check_reported_size 899
+partial_range=$(get_reported_size)
+[[ $one_range -eq $partial_range ]] || log_fail \
+ "Partial range failure: $one_range -> $partial_range"
-# Zero range which overlaps the third and fourth block.
+# Zero range which overlaps the third and fourth block. The reported size
+# should remain constant.
log_must zero_range $(((BLKSZ * 2) + (BLKSZ / 2))) $((BLKSZ)) $FILE
-sync_pool $TESTPOOL
-log_must check_reported_size 899
+overlap_range=$(get_reported_size)
+[[ $one_range -eq $overlap_range ]] || log_fail \
+ "Overlap range failure: $one_range -> $overlap_range"
# Zero range from the fifth block past the end of file, with --keep-size.
-# The apparent file size must not change, since we did specify --keep-size.
+# The reported size should decrease, and the apparent file size must not
+# change, since we did specify --keep-size.
apparent_size=$(stat_size $FILE)
log_must fallocate --keep-size --zero-range --offset $((BLKSZ * 4)) --length $((BLKSZ * 10)) "$FILE"
-sync_pool $TESTPOOL
-log_must check_reported_size 387
+eof_range=$(get_reported_size)
+[[ $overlap_range -gt $eof_range ]] || log_fail \
+ "EOF range failure: $overlap_range -> $eof_range"
log_must check_apparent_size $apparent_size
# Zero range from the fifth block past the end of file. The apparent
# file size should change since --keep-size is not implied, unlike
-# with PUNCH_HOLE.
+# with PUNCH_HOLE. The reported size should remain constant.
apparent_size=$(stat_size $FILE)
log_must zero_range $((BLKSZ * 4)) $((BLKSZ * 10)) $FILE
-sync_pool $TESTPOOL
-log_must check_reported_size 387
+eof_range2=$(get_reported_size)
+[[ $eof_range -eq $eof_range2 ]] || log_fail \
+ "Second EOF range failure: $eof_range -> $eof_range2"
log_must check_apparent_size $((BLKSZ * 14))
log_pass "Ensure ranges can be zeroed in files"