mirror of https://github.com/vitalif/e2fsprogs
debugfs: implement fallocate
Implement a fallocate function for debugfs, and add some tests to demonstrate that it works (more or less). Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>debian
Darrick J. Wong
Theodore Ts'o
parent
4f868703f6
commit
2f8c0d028c
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@ -157,6 +157,9 @@ request do_dirsearch, "Search a directory for a particular filename",
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request do_bmap, "Calculate the logical->physical block mapping for an inode",
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bmap;
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request do_fallocate, "Allocate uninitialized blocks to an inode",
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fallocate;
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request do_punch, "Punch (or truncate) blocks from an inode by deallocating them",
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punch, truncate;
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@ -306,6 +306,13 @@ from the file \fIfilespec\fR.
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Expand the directory
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.IR filespec .
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.TP
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.BI fallocate " filespec start_block [end_block]
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Allocate and map uninitialized blocks into \fIfilespec\fR between
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logical block \fIstart_block\fR and \fIend_block\fR, inclusive. If
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\fIend_block\fR is not supplied, this function maps until it runs out
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of free disk blocks or the maximum file size is reached. Existing
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mappings are left alone.
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.TP
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.BI feature " [fs_feature] [-fs_feature] ..."
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Set or clear various filesystem features in the superblock. After setting
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or clearing any filesystem features that were requested, print the current
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@ -2195,6 +2195,42 @@ void do_punch(int argc, char *argv[])
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return;
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}
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}
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void do_fallocate(int argc, char *argv[])
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{
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ext2_ino_t ino;
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blk64_t start, end;
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int err;
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errcode_t errcode;
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if (common_args_process(argc, argv, 3, 4, argv[0],
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"<file> start_blk [end_blk]",
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CHECK_FS_RW | CHECK_FS_BITMAPS))
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return;
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ino = string_to_inode(argv[1]);
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if (!ino)
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return;
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err = strtoblk(argv[0], argv[2], "logical block", &start);
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if (err)
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return;
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if (argc == 4) {
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err = strtoblk(argv[0], argv[3], "logical block", &end);
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if (err)
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return;
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} else
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end = ~0;
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errcode = ext2fs_fallocate(current_fs, EXT2_FALLOCATE_INIT_BEYOND_EOF,
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ino, NULL, ~0ULL, start, end - start + 1);
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if (errcode) {
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com_err(argv[0], errcode,
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"while fallocating inode %u from %llu to %llu\n", ino,
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(unsigned long long) start, (unsigned long long) end);
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return;
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}
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}
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#endif /* READ_ONLY */
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void do_symlink(int argc, char *argv[])
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@ -166,6 +166,7 @@ extern void do_imap(int argc, char **argv);
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extern void do_set_current_time(int argc, char **argv);
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extern void do_supported_features(int argc, char **argv);
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extern void do_punch(int argc, char **argv);
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extern void do_fallocate(int argc, char **argv);
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extern void do_symlink(int argc, char **argv);
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extern void do_dump_mmp(int argc, char **argv);
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Binary file not shown.
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@ -0,0 +1 @@
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fallocate sparse files and big files
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@ -0,0 +1,175 @@
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if test -x $DEBUGFS_EXE; then
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FSCK_OPT=-fy
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OUT=$test_name.log
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if [ -f $test_dir/expect.gz ]; then
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EXP=$test_name.tmp
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gunzip < $test_dir/expect.gz > $EXP
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else
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EXP=$test_dir/expect
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fi
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cp /dev/null $OUT
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cat > $TMPFILE.conf << ENDL
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[fs_types]
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ext4 = {
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base_features = sparse_super,filetype,resize_inode,dir_index,ext_attr,^has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,64bit
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blocksize = 1024
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inode_size = 256
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inode_ratio = 16384
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}
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ENDL
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MKE2FS_CONFIG=$TMPFILE.conf $MKE2FS -F -o Linux -b 1024 -O ^bigalloc -T ext4 $TMPFILE 65536 2>&1 | sed -f $cmd_dir/filter.sed >> $OUT 2>&1
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rm -rf $TMPFILE.conf
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$FSCK -fy -N test_filesys $TMPFILE > $OUT.new 2>&1
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status=$?
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echo Exit status is $status >> $OUT.new
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sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" $OUT.new >> $OUT
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rm -f $OUT.new
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echo "debugfs write files" >> $OUT
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make_file() {
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name="$1"
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start="$2"
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flag="$3"
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cat << ENDL
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write /dev/null $name
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sif /$name size 40960
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eo /$name
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set_bmap $flag 10 $((start + 10))
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set_bmap $flag 13 $((start + 13))
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set_bmap $flag 26 $((start + 26))
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set_bmap $flag 29 $((start + 29))
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ec
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sif /$name blocks 8
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setb $((start + 10))
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setb $((start + 13))
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setb $((start + 26))
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setb $((start + 29))
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ENDL
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}
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#Files we create:
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# a: fallocate a 40k file
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# b*: falloc sparse file starting at b*
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# c*: falloc spare file ending at c*
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# d: midcluster to midcluster, surrounding sparse
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# e: partial middle cluster alloc
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# f: one big file
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# g*: falloc sparse init file starting at g*
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# h*: falloc sparse init file ending at h*
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# i: midcluster to midcluster, surrounding sparse init
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# j: partial middle cluster alloc
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# k: one big init file
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base=5000
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cat > $TMPFILE.cmd << ENDL
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write /dev/null a
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sif /a size 40960
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fallocate /a 0 39
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ENDL
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echo "ex /a" >> $TMPFILE.cmd2
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make_file sample $base --uninit >> $TMPFILE.cmd
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echo "ex /sample" >> $TMPFILE.cmd2
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base=10000
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for i in 8 9 10 11 12 13 14 15; do
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make_file b$i $(($base + (40 * ($i - 8)))) --uninit >> $TMPFILE.cmd
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echo "fallocate /b$i $i 39" >> $TMPFILE.cmd
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echo "ex /b$i" >> $TMPFILE.cmd2
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done
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for i in 24 25 26 27 28 29 30 31; do
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make_file c$i $(($base + 320 + (40 * ($i - 24)))) --uninit >> $TMPFILE.cmd
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echo "fallocate /c$i 0 $i" >> $TMPFILE.cmd
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echo "ex /c$i" >> $TMPFILE.cmd2
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done
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make_file d $(($base + 640)) --uninit >> $TMPFILE.cmd
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echo "fallocate /d 4 35" >> $TMPFILE.cmd
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echo "ex /d" >> $TMPFILE.cmd2
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make_file e $(($base + 680)) --uninit >> $TMPFILE.cmd
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echo "fallocate /e 19 20" >> $TMPFILE.cmd
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echo "ex /e" >> $TMPFILE.cmd2
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cat >> $TMPFILE.cmd << ENDL
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write /dev/null f
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sif /f size 1024
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eo /f
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set_bmap --uninit 0 9000
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ec
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sif /f blocks 2
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setb 9000
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fallocate /f 0 8999
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ENDL
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echo "ex /f" >> $TMPFILE.cmd2
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# Now do it again, but with initialized blocks
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base=20000
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for i in 8 9 10 11 12 13 14 15; do
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make_file g$i $(($base + (40 * ($i - 8)))) >> $TMPFILE.cmd
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echo "fallocate /g$i $i 39" >> $TMPFILE.cmd
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echo "ex /g$i" >> $TMPFILE.cmd2
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done
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for i in 24 25 26 27 28 29 30 31; do
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make_file h$i $(($base + 320 + (40 * ($i - 24)))) >> $TMPFILE.cmd
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echo "fallocate /h$i 0 $i" >> $TMPFILE.cmd
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echo "ex /h$i" >> $TMPFILE.cmd2
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done
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make_file i $(($base + 640)) >> $TMPFILE.cmd
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echo "fallocate /i 4 35" >> $TMPFILE.cmd
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echo "ex /i" >> $TMPFILE.cmd2
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make_file j $(($base + 680)) >> $TMPFILE.cmd
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echo "fallocate /j 19 20" >> $TMPFILE.cmd
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echo "ex /j" >> $TMPFILE.cmd2
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cat >> $TMPFILE.cmd << ENDL
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write /dev/null k
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sif /k size 1024
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eo /k
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set_bmap 0 19000
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ec
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sif /k blocks 2
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setb 19000
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fallocate /k 0 8999
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sif /k size 9216000
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ENDL
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echo "ex /k" >> $TMPFILE.cmd2
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$DEBUGFS_EXE -w -f $TMPFILE.cmd $TMPFILE > /dev/null 2>&1
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$DEBUGFS_EXE -f $TMPFILE.cmd2 $TMPFILE >> $OUT.new 2>&1
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sed -f $cmd_dir/filter.sed < $OUT.new >> $OUT
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rm -rf $OUT.new $TMPFILE.cmd $TMPFILE.cmd2
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$FSCK -fy -N test_filesys $TMPFILE > $OUT.new 2>&1
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status=$?
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echo Exit status is $status >> $OUT.new
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sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" $OUT.new >> $OUT
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rm -f $OUT.new
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rm -f $TMPFILE
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cmp -s $OUT $EXP
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status=$?
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if [ "$status" = 0 ] ; then
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echo "$test_name: $test_description: ok"
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touch $test_name.ok
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else
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echo "$test_name: $test_description: failed"
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diff $DIFF_OPTS $EXP $OUT > $test_name.failed
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rm -f $test_name.tmp
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fi
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unset IMAGE FSCK_OPT OUT EXP
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else #if test -x $DEBUGFS_EXE; then
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echo "$test_name: $test_description: skipped"
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fi
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Binary file not shown.
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@ -0,0 +1 @@
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fallocate sparse files and big files with bigalloc
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@ -0,0 +1,176 @@
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if test -x $DEBUGFS_EXE; then
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FSCK_OPT=-fy
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OUT=$test_name.log
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if [ -f $test_dir/expect.gz ]; then
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EXP=$test_name.tmp
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gunzip < $test_dir/expect.gz > $EXP
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else
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EXP=$test_dir/expect
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fi
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cp /dev/null $OUT
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cat > $TMPFILE.conf << ENDL
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[fs_types]
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ext4 = {
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cluster_size = 8192
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base_features = sparse_super,filetype,resize_inode,dir_index,ext_attr,^has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,64bit
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blocksize = 1024
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inode_size = 256
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inode_ratio = 16384
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}
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ENDL
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MKE2FS_CONFIG=$TMPFILE.conf $MKE2FS -F -o Linux -b 1024 -O bigalloc -T ext4 $TMPFILE 65536 2>&1 | sed -f $cmd_dir/filter.sed >> $OUT 2>&1
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rm -rf $TMPFILE.conf
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$FSCK -fy -N test_filesys $TMPFILE > $OUT.new 2>&1
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status=$?
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echo Exit status is $status >> $OUT.new
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sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" $OUT.new >> $OUT
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rm -f $OUT.new
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echo "debugfs write files" >> $OUT
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make_file() {
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name="$1"
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start="$2"
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flag="$3"
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cat << ENDL
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write /dev/null $name
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sif /$name size 40960
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eo /$name
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set_bmap $flag 10 $((start + 10))
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set_bmap $flag 13 $((start + 13))
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set_bmap $flag 26 $((start + 26))
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set_bmap $flag 29 $((start + 29))
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ec
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sif /$name blocks 32
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setb $((start + 10))
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setb $((start + 13))
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setb $((start + 26))
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setb $((start + 29))
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ENDL
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}
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#Files we create:
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# a: fallocate a 40k file
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# b*: falloc sparse file starting at b*
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# c*: falloc spare file ending at c*
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# d: midcluster to midcluster, surrounding sparse
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# e: partial middle cluster alloc
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# f: one big file
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# g*: falloc sparse init file starting at g*
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# h*: falloc sparse init file ending at h*
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# i: midcluster to midcluster, surrounding sparse init
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# j: partial middle cluster alloc
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# k: one big init file
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base=5000
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cat > $TMPFILE.cmd << ENDL
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write /dev/null a
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sif /a size 40960
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fallocate /a 0 39
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ENDL
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echo "ex /a" >> $TMPFILE.cmd2
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make_file sample $base --uninit >> $TMPFILE.cmd
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echo "ex /sample" >> $TMPFILE.cmd2
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base=10000
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for i in 8 9 10 11 12 13 14 15; do
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make_file b$i $(($base + (40 * ($i - 8)))) --uninit >> $TMPFILE.cmd
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echo "fallocate /b$i $i 39" >> $TMPFILE.cmd
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echo "ex /b$i" >> $TMPFILE.cmd2
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done
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for i in 24 25 26 27 28 29 30 31; do
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make_file c$i $(($base + 320 + (40 * ($i - 24)))) --uninit >> $TMPFILE.cmd
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echo "fallocate /c$i 0 $i" >> $TMPFILE.cmd
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echo "ex /c$i" >> $TMPFILE.cmd2
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done
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make_file d $(($base + 640)) --uninit >> $TMPFILE.cmd
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echo "fallocate /d 4 35" >> $TMPFILE.cmd
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echo "ex /d" >> $TMPFILE.cmd2
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make_file e $(($base + 680)) --uninit >> $TMPFILE.cmd
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echo "fallocate /e 19 20" >> $TMPFILE.cmd
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echo "ex /e" >> $TMPFILE.cmd2
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cat >> $TMPFILE.cmd << ENDL
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write /dev/null f
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sif /f size 1024
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eo /f
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set_bmap --uninit 0 9000
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ec
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sif /f blocks 16
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setb 9000
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fallocate /f 0 8999
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ENDL
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echo "ex /f" >> $TMPFILE.cmd2
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# Now do it again, but with initialized blocks
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base=20000
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for i in 8 9 10 11 12 13 14 15; do
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make_file g$i $(($base + (40 * ($i - 8)))) >> $TMPFILE.cmd
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echo "fallocate /g$i $i 39" >> $TMPFILE.cmd
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echo "ex /g$i" >> $TMPFILE.cmd2
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done
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for i in 24 25 26 27 28 29 30 31; do
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make_file h$i $(($base + 320 + (40 * ($i - 24)))) >> $TMPFILE.cmd
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echo "fallocate /h$i 0 $i" >> $TMPFILE.cmd
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echo "ex /h$i" >> $TMPFILE.cmd2
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done
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make_file i $(($base + 640)) >> $TMPFILE.cmd
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echo "fallocate /i 4 35" >> $TMPFILE.cmd
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echo "ex /i" >> $TMPFILE.cmd2
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make_file j $(($base + 680)) >> $TMPFILE.cmd
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echo "fallocate /j 19 20" >> $TMPFILE.cmd
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echo "ex /j" >> $TMPFILE.cmd2
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cat >> $TMPFILE.cmd << ENDL
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write /dev/null k
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sif /k size 1024
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eo /k
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set_bmap 0 19000
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ec
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sif /k blocks 16
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setb 19000
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fallocate /k 0 8999
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sif /k size 9216000
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ENDL
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echo "ex /k" >> $TMPFILE.cmd2
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$DEBUGFS_EXE -w -f $TMPFILE.cmd $TMPFILE > /dev/null 2>&1
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$DEBUGFS_EXE -f $TMPFILE.cmd2 $TMPFILE >> $OUT.new 2>&1
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sed -f $cmd_dir/filter.sed < $OUT.new >> $OUT
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rm -rf $OUT.new $TMPFILE.cmd $TMPFILE.cmd2
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$FSCK -fy -N test_filesys $TMPFILE > $OUT.new 2>&1
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status=$?
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echo Exit status is $status >> $OUT.new
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sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" $OUT.new >> $OUT
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rm -f $OUT.new
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rm -f $TMPFILE
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cmp -s $OUT $EXP
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status=$?
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if [ "$status" = 0 ] ; then
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echo "$test_name: $test_description: ok"
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touch $test_name.ok
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else
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echo "$test_name: $test_description: failed"
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diff $DIFF_OPTS $EXP $OUT > $test_name.failed
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rm -f $test_name.tmp
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fi
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unset IMAGE FSCK_OPT OUT EXP
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else #if test -x $DEBUGFS_EXE; then
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echo "$test_name: $test_description: skipped"
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fi
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@ -0,0 +1,58 @@
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Creating filesystem with 65536 1k blocks and 4096 inodes
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Superblock backups stored on blocks:
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8193, 24577, 40961, 57345
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Allocating group tables: done
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Writing inode tables: done
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Writing superblocks and filesystem accounting information: done
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|
||||
Pass 1: Checking inodes, blocks, and sizes
|
||||
Pass 2: Checking directory structure
|
||||
Pass 3: Checking directory connectivity
|
||||
Pass 4: Checking reference counts
|
||||
Pass 5: Checking group summary information
|
||||
test_filesys: 11/4096 files (0.0% non-contiguous), 2340/65536 blocks
|
||||
Exit status is 0
|
||||
debugfs write files
|
||||
debugfs: stat /a
|
||||
Inode: 12 Type: regular Mode: 0666 Flags: 0x0
|
||||
Generation: 0 Version: 0x00000000:00000000
|
||||
User: 0 Group: 0 Size: 40960
|
||||
File ACL: 0 Directory ACL: 0
|
||||
Links: 1 Blockcount: 82
|
||||
Fragment: Address: 0 Number: 0 Size: 0
|
||||
Size of extra inode fields: 28
|
||||
BLOCKS:
|
||||
(0-1):1312-1313, (2-11):8000-8009, (IND):8010, (12-39):8011-8038
|
||||
TOTAL: 41
|
||||
|
||||
debugfs: stat /b
|
||||
Inode: 13 Type: regular Mode: 0666 Flags: 0x0
|
||||
Generation: 0 Version: 0x00000000:00000000
|
||||
User: 0 Group: 0 Size: 10240000
|
||||
File ACL: 0 Directory ACL: 0
|
||||
Links: 1 Blockcount: 20082
|
||||
Fragment: Address: 0 Number: 0 Size: 0
|
||||
Size of extra inode fields: 28
|
||||
BLOCKS:
|
||||
(0-11):10000-10011, (IND):10012, (12-267):10013-10268, (DIND):10269, (IND):10270, (268-523):10271-10526, (IND):10527, (524-779):10528-10783, (IND):10784, (780-1035):10785-11040, (IND):11041, (1036-1291):11042-11297, (IND):11298, (1292-1547):11299-11554, (IND):11555, (1548-1803):11556-11811, (IND):11812, (1804-2059):11813-12068, (IND):12069, (2060-2315):12070-12325, (IND):12326, (2316-2571):12327-12582, (IND):12583, (2572-2827):12584-12839, (IND):12840, (2828-3083):12841-13096, (IND):13097, (3084-3339):13098-13353, (IND):13354, (3340-3595):13355-13610, (IND):13611, (3596-3851):13612-13867, (IND):13868, (3852-4107):13869-14124, (IND):14125, (4108-4363):14126-14381, (IND):14382, (4364-4619):14383-14638, (IND):14639, (4620-4875):14640-14895, (IND):14896, (4876-5131):14897-15152, (IND):15153, (5132-5387):15154-15409, (IND):15410, (5388-5643):15411-15666, (IND):15667, (5644-5899):15668-15923, (IND):15924, (5900-6155):15925-16180, (IND):16181, (6156-6411):16182-16437, (IND):16438, (6412-6667):16439-16694, (IND):16695, (6668-6923):16696-16951, (IND):16952, (6924-7179):16953-17208, (IND):17209, (7180-7435):17210-17465, (IND):17466, (7436-7691):17467-17722, (IND):17723, (7692-7947):17724-17979, (IND):17980, (7948-8203):17981-18236, (IND):18237, (8204-8459):18238-18493, (IND):18494, (8460-8715):18495-18750, (IND):18751, (8716-8971):18752-19007, (IND):19008, (8972-9227):19009-19264, (IND):19265, (9228-9483):19266-19521, (IND):19522, (9484-9739):19523-19778, (IND):19779, (9740-9995):19780-20035, (IND):20036, (9996-9999):20037-20040
|
||||
TOTAL: 10041
|
||||
|
||||
Pass 1: Checking inodes, blocks, and sizes
|
||||
Pass 2: Checking directory structure
|
||||
Pass 3: Checking directory connectivity
|
||||
Pass 4: Checking reference counts
|
||||
Pass 5: Checking group summary information
|
||||
Free blocks count wrong for group #0 (6841, counted=6840).
|
||||
Fix? yes
|
||||
|
||||
Free blocks count wrong for group #1 (1551, counted=1550).
|
||||
Fix? yes
|
||||
|
||||
Free blocks count wrong (53116, counted=53114).
|
||||
Fix? yes
|
||||
|
||||
|
||||
test_filesys: ***** FILE SYSTEM WAS MODIFIED *****
|
||||
test_filesys: 13/4096 files (7.7% non-contiguous), 12422/65536 blocks
|
||||
Exit status is 1
|
||||
|
|
@ -0,0 +1 @@
|
|||
fallocate sparse files and big files on a blockmap fs
|
||||
|
|
@ -0,0 +1,85 @@
|
|||
if test -x $DEBUGFS_EXE; then
|
||||
|
||||
FSCK_OPT=-fy
|
||||
OUT=$test_name.log
|
||||
if [ -f $test_dir/expect.gz ]; then
|
||||
EXP=$test_name.tmp
|
||||
gunzip < $test_dir/expect.gz > $EXP1
|
||||
else
|
||||
EXP=$test_dir/expect
|
||||
fi
|
||||
|
||||
cp /dev/null $OUT
|
||||
|
||||
cat > $TMPFILE.conf << ENDL
|
||||
[fs_types]
|
||||
ext4 = {
|
||||
base_features = sparse_super,filetype,resize_inode,dir_index,ext_attr,^has_journal,^extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize,^64bit
|
||||
blocksize = 1024
|
||||
inode_size = 256
|
||||
inode_ratio = 16384
|
||||
}
|
||||
ENDL
|
||||
MKE2FS_CONFIG=$TMPFILE.conf $MKE2FS -F -o Linux -b 1024 -O ^bigalloc -T ext4 $TMPFILE 65536 2>&1 | sed -f $cmd_dir/filter.sed >> $OUT 2>&1
|
||||
rm -rf $TMPFILE.conf
|
||||
|
||||
$FSCK -fy -N test_filesys $TMPFILE > $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" $OUT.new >> $OUT
|
||||
rm -f $OUT.new
|
||||
|
||||
echo "debugfs write files" >> $OUT
|
||||
|
||||
#Files we create:
|
||||
# a: fallocate a 40k file
|
||||
# k: one big file
|
||||
base=5000
|
||||
cat > $TMPFILE.cmd << ENDL
|
||||
write /dev/null a
|
||||
sif /a bmap[2] 8000
|
||||
sif /a size 40960
|
||||
sif /a i_blocks 2
|
||||
setb 8000
|
||||
fallocate /a 0 39
|
||||
|
||||
write /dev/null b
|
||||
sif /b size 10240000
|
||||
sif /b bmap[0] 10000
|
||||
sif /b i_blocks 2
|
||||
setb 10000
|
||||
fallocate /b 0 9999
|
||||
ENDL
|
||||
echo "stat /a" >> $TMPFILE.cmd2
|
||||
echo "stat /b" >> $TMPFILE.cmd2
|
||||
|
||||
$DEBUGFS_EXE -w -f $TMPFILE.cmd $TMPFILE > /dev/null 2>&1
|
||||
$DEBUGFS_EXE -f $TMPFILE.cmd2 $TMPFILE >> $OUT.new 2>&1
|
||||
sed -f $cmd_dir/filter.sed -e '/^.*time:.*$/d' < $OUT.new >> $OUT
|
||||
rm -rf $OUT.new $TMPFILE.cmd $TMPFILE.cmd2
|
||||
|
||||
$FSCK -fy -N test_filesys $TMPFILE > $OUT.new 2>&1
|
||||
status=$?
|
||||
echo Exit status is $status >> $OUT.new
|
||||
sed -f $cmd_dir/filter.sed -e "s;$TMPFILE;test.img;" $OUT.new >> $OUT
|
||||
rm -f $OUT.new
|
||||
|
||||
rm -f $TMPFILE
|
||||
|
||||
cmp -s $OUT $EXP
|
||||
status=$?
|
||||
|
||||
if [ "$status" = 0 ] ; then
|
||||
echo "$test_name: $test_description: ok"
|
||||
touch $test_name.ok
|
||||
else
|
||||
echo "$test_name: $test_description: failed"
|
||||
diff $DIFF_OPTS $EXP $OUT > $test_name.failed
|
||||
rm -f $test_name.tmp
|
||||
fi
|
||||
|
||||
unset IMAGE FSCK_OPT OUT EXP
|
||||
|
||||
else #if test -x $DEBUGFS_EXE; then
|
||||
echo "$test_name: $test_description: skipped"
|
||||
fi
|
||||
Loading…
Reference in New Issue