The -t option is documented as deprecated in GNU's mktemp, and
FreeBSD's mktemp doesn't support it at all.
Replace it with the construct "mktemp ${TMPDIR:-/tmp}/foo.XXXXXX"
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The previous commit exposed bugs in the calculation for flex_bg file
systems. The problem is that since (by default) we keep the metadata
blocks for the flex_bg in the first block group of the flex_bg, and
because we don't want to overwrite metadata blocks used by the
original file system with data blocks make life easier in case the
resize is aborted for some reason, we need to treat all of the
metadata blocks in the existing flex_bg has in use for the purposes of
calculate_minimum_resize_size().
Even though this means we need to reserve more data blocks to avoid
running out of space, the net result of these two commits is a net
savings in how much we can shrink a file system.
Using the following test sequence:
mke2fs -F -t ext4 /tmp/foo.img 2T
resize2fs -M /tmp/foo.img
resize2fs -M /tmp/foo.img
resize2fs -M /tmp/foo.img
Here is the comparison in the resulting file systems between the old
and new resize2fs (units are in 4k blocks):
resize #1 resize #2 resize #3
old resize2fs 1117186 45679 43536
new resize2fs 48784 37413 37392
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Old distros may not have the "truncate" tool, so use "dd" instead.
If tmpfs cannot handle a 2GB temp file (e.g. old RHEL5 and SLES 11
kernels) then skip the test instead of failing it. If this fails,
try to report better error messages instead of failing silently.
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Since commit 5ad07acad if $TMP cannot hold large test filesystems
for resize testing the resize_test creates temporary test files
in the local working directory. Since it overrides TMPFILE locally
the calling program does not delete the generated file correctly.
Delete the large $TMPFILE within resize_test if it passes, but leave
it for debugging if the test failed.
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
The new resize tests create 2TB test files, but tmpfs in kernels
before 3.1 have a max file size of 256GB. Ext3 may also have
a size limit for smaller blocksize filesystems.
Fix the resize_test script to verify that $TMPFILE can be resized
to the final test size, and if that fails try creating the file on
the local filesystem instead of in $TMPDIR. If that cannot hold
the large filesystem, skip the test.
Signed-off-by: Andreas Dilger <adilger@dilger.ca>
Tested-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Theodore Ts'o