diff options
Diffstat (limited to 'usr/src/test/zfs-tests/tests/functional/rsend/rsend.kshlib')
| -rw-r--r-- | usr/src/test/zfs-tests/tests/functional/rsend/rsend.kshlib | 104 |
1 files changed, 103 insertions, 1 deletions
diff --git a/usr/src/test/zfs-tests/tests/functional/rsend/rsend.kshlib b/usr/src/test/zfs-tests/tests/functional/rsend/rsend.kshlib index 5d2ba60f18..6b22cb709e 100644 --- a/usr/src/test/zfs-tests/tests/functional/rsend/rsend.kshlib +++ b/usr/src/test/zfs-tests/tests/functional/rsend/rsend.kshlib @@ -428,6 +428,108 @@ function rm_files } # +# Simulate a random set of operations which could be reasonably expected +# to occur on an average filesystem. +# +# $1 Number of files to modify +# $2 Maximum file size +# $3 File system to modify the file on +# $4 Enabled xattrs (optional) +# +function churn_files +{ + nfiles=$1 + maxsize=$2 + fs=$3 + xattrs=${4:-1} + + # + # Remove roughly half of the files in order to make it more + # likely that a dnode will be reallocated. + # + for ((i=0; i<$nfiles; i=i+1)); do + file_name="/$fs/file-$i" + + if [[ -e $file_name ]]; then + if [ $((RANDOM % 2)) -eq 0 ]; then + rm $file_name || \ + log_fail "Failed to remove $file_name" + fi + fi + done + + # + # Remount the filesystem to simulate normal usage. This resets + # the last allocated object id allowing for new objects to be + # reallocated in the locations of previously freed objects. + # + log_must zfs unmount $fs + log_must zfs mount $fs + + for i in {0..$nfiles}; do + file_name="/$fs/file-$i" + file_size=$((($RANDOM * $RANDOM % ($maxsize - 1)) + 1)) + + # + # When the file exists modify it in one of five ways to + # simulate normal usage: + # - (20%) Remove and set and extended attribute on the file + # - (20%) Overwrite the existing file + # - (20%) Truncate the existing file to a random length + # - (20%) Truncate the existing file to zero length + # - (20%) Remove the file + # + # Otherwise create the missing file. 20% of the created + # files will be small and use embedded block pointers, the + # remainder with have random sizes up to the maximum size. + # Three extended attributes are attached to all of the files. + # + if [[ -e $file_name ]]; then + value=$((RANDOM % 5)) + if [ $value -eq 0 -a $xattrs -ne 0 ]; then + attrname="testattr$((RANDOM % 3))" + attr -qr $attrname $file_name || \ + log_fail "Failed to remove $attrname" + attr -qs $attrname -V TestValue $file_name || \ + log_fail "Failed to set $attrname" + elif [ $value -eq 1 ]; then + dd if=/dev/urandom of=$file_name \ + bs=$file_size count=1 >/dev/null 2>&1 || \ + log_fail "Failed to overwrite $file_name" + elif [ $value -eq 2 ]; then + truncate -s $file_size $file_name || \ + log_fail "Failed to truncate $file_name" + elif [ $value -eq 3 ]; then + truncate -s 0 $file_name || \ + log_fail "Failed to truncate $file_name" + else + rm $file_name || \ + log_fail "Failed to remove $file_name" + fi + else + if [ $((RANDOM % 5)) -eq 0 ]; then + file_size=$((($RANDOM % 64) + 1)) + fi + + dd if=/dev/urandom of=$file_name \ + bs=$file_size count=1 >/dev/null 2>&1 || \ + log_fail "Failed to create $file_name" + + if [ $xattrs -ne 0 ]; then + for j in {0..2}; do + attrname="testattr$j" + attr -qs $attrname -V TestValue \ + $file_name || log_fail \ + "Failed to set $attrname" + done + fi + fi + done + + return 0 +} + +# # Mess up file contents # # $1 The file path @@ -606,7 +708,7 @@ function parse_dump if ($1 == "OBJECT") print $1" "$4 if ($1 == "FREEOBJECTS") print $1" "$4" "$7 if ($1 == "FREE") print $1" "$7" "$10 - if ($1 == "WRITE") print $1" "$15" "$18" "$21" "$24" "$27}' + if ($1 == "WRITE") print $1" "$15" "$21" "$24" "$27" "$30}' } # |