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| author | Theodore Ts'o <tytso@mit.edu> | 2014-08-27 09:27:54 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2014-08-27 09:27:54 -0400 |
| commit | 725502de199031a379761fba338885d2c3bbfb25 (patch) | |
| tree | cefea7d121ab565fc499d16ffe564efb78a1b143 | |
| parent | 3ff57555f64eada1512cf545c46d2491ba229a1f (diff) | |
| download | e2fsprogs-725502de199031a379761fba338885d2c3bbfb25.tar.gz | |
mke2fs: complain if bigalloc and hugefiles_align_disk is incompatible
If the starting partition offset is incompatible with the bigalloc
cluster size, complain and exit, instead of creating a file which
would have a logical to physical block mapping which breaks the
cluster alignment requirement.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
| -rw-r--r-- | misc/mk_hugefiles.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/misc/mk_hugefiles.c b/misc/mk_hugefiles.c index c292ddc1..8291f019 100644 --- a/misc/mk_hugefiles.c +++ b/misc/mk_hugefiles.c @@ -490,9 +490,18 @@ errcode_t mk_hugefiles(ext2_filsys fs, const char *device_name) t = get_string_from_profile(fs_types, "hugefiles_align", "0"); align = parse_num_blocks2(t, fs->super->s_log_block_size); free(t); - if (get_bool_from_profile(fs_types, "hugefiles_align_disk", 0)) + if (get_bool_from_profile(fs_types, "hugefiles_align_disk", 0)) { part_offset = get_partition_start(device_name) / (fs->blocksize / 512); + if (part_offset % EXT2FS_CLUSTER_RATIO(fs)) { + fprintf(stderr, + _("Partition offset of %llu (%uk) blocks " + "not compatible with cluster size %u.\n"), + part_offset, fs->blocksize, + EXT2_CLUSTER_SIZE(fs->super)); + exit(1); + } + } num_blocks = round_up_align(num_blocks, align, 0); zero_hugefile = get_bool_from_profile(fs_types, "zero_hugefiles", zero_hugefile); |