diff options
Diffstat (limited to 'tests/cp/sparse-fiemap')
| -rwxr-xr-x | tests/cp/sparse-fiemap | 100 |
1 files changed, 81 insertions, 19 deletions
diff --git a/tests/cp/sparse-fiemap b/tests/cp/sparse-fiemap index 21b02acac..dc0cf6059 100755 --- a/tests/cp/sparse-fiemap +++ b/tests/cp/sparse-fiemap @@ -1,7 +1,7 @@ #!/bin/sh # Test cp --sparse=always through fiemap copy -# Copyright (C) 2006-2010 Free Software Foundation, Inc. +# Copyright (C) 2010 Free Software Foundation, Inc. # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -21,29 +21,34 @@ if test "$VERBOSE" = yes; then cp --version fi -. $srcdir/test-lib.sh -require_root_ +. "${srcdir=.}/init.sh"; path_prepend_ ../src -cwd=`pwd` -cleanup_() { cd /; umount "$cwd/mnt"; } +if df -T -t btrfs -t xfs -t ext4 -t ocfs2 . ; then + : # Current dir is on a partition with working extents. Good! +else + # It's not; we need to create one, hence we need root access. + require_root_ -skip=0 -# Create an ext4 loopback file system -dd if=/dev/zero of=blob bs=8192 count=1000 || skip=1 -mkdir mnt -mkfs -t ext4 -F blob || - skip_test_ "failed to create ext4 file system" -mount -oloop blob mnt || skip=1 -cd mnt || skip=1 -echo test > f || skip=1 -test -s f || skip=1 + cwd=$PWD + cleanup_() { cd /; umount "$cwd/mnt"; } -test $skip = 1 && - skip_test_ "insufficient mount/ext4 support" + skip=0 + # Create an ext4 loopback file system + dd if=/dev/zero of=blob bs=32k count=1000 || skip=1 + mkdir mnt + mkfs -t ext4 -F blob || + skip_test_ "failed to create ext4 file system" + mount -oloop blob mnt || skip=1 + cd mnt || skip=1 + echo test > f || skip=1 + test -s f || skip=1 -# Create a 1TiB sparse file -dd if=/dev/zero of=mnt/sparse bs=1k count=1 seek=1G || framework_failure + test $skip = 1 && + skip_test_ "insufficient mount/ext4 support" +fi +# Create a 1TiB sparse file +dd if=/dev/zero of=sparse bs=1k count=1 seek=1G || framework_failure # It takes many minutes to copy this sparse file using the old method. # By contrast, it takes far less than 1 second using FIEMAP-copy. @@ -53,4 +58,61 @@ timeout 10 cp --sparse=always sparse fiemap || fail=1 # in bytes as the original. test $(stat --printf %s sparse) = $(stat --printf %s fiemap) || fail=1 +# ================================================= +# Ensure that we exercise the FIEMAP-copying code enough +# to provoke at least two iterations of the do...while loop +# in which it calls ioctl (fd, FS_IOC_FIEMAP,... +# This also verifies that non-trivial extents are preserved. + +$PERL -e 1 || skip_test_ 'skipping part of this test; you lack perl' + +# Extract logical block number and length pairs from filefrag -v output. +# The initial sed is to remove the "eof" from the normally-empty "flags" field. +# That is required when that final extent has no number in the "expected" field. +f() +{ + sed 's/ eof$//' $@ \ + | awk '/^ *[0-9]/ {printf "%d %d ", $2 ,NF < 5 ? $NF : $5 } END {print ""}' +} + +for i in $(seq 1 2 21); do + for j in 1 2 31 100; do + $PERL -e 'BEGIN { $n = '$i' * 1024; *F = *STDOUT }' \ + -e 'for (1..'$j') { sysseek (*F, $n, 1)' \ + -e '&& syswrite (*F, chr($_)x$n) or die "$!"}' > j1 || fail=1 + # sync + cp --sparse=always j1 j2 || fail=1 + # sync + # Technically we may need the 'sync' uses above, but + # uncommenting them makes this test take much longer. + + cmp j1 j2 || fail=1 + filefrag -v j1 | grep extent \ + || skip_test_ 'skipping part of this test; you lack filefrag' + + # Here is sample filefrag output: + # $ perl -e 'BEGIN{$n=16*1024; *F=*STDOUT}' \ + # -e 'for (1..5) { sysseek(*F,$n,1)' \ + # -e '&& syswrite *F,"."x$n or die "$!"}' > j + # $ filefrag -v j + # File system type is: ef53 + # File size of j is 163840 (40 blocks, blocksize 4096) + # ext logical physical expected length flags + # 0 4 6258884 4 + # 1 12 6258892 6258887 4 + # 2 20 6258900 6258895 4 + # 3 28 6258908 6258903 4 + # 4 36 6258916 6258911 4 eof + # j: 6 extents found + + # exclude the physical block numbers; they always differ + filefrag -v j1 > ff1 || fail=1 + filefrag -v j2 > ff2 || fail=1 + { f ff1; f ff2; } \ + | $PERL $abs_top_srcdir/tests/filefrag-extent-compare \ + || { fail=1; break; } + done + test $fail = 1 && break +done + Exit $fail |