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iotests: Provide a function for checking the creation of huge files

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Some tests create huge (but sparse) files, and to be able to run those
tests in certain limited environments (like CI containers), we have to
check for the possibility to create such files first. Thus let's introduce
a common function to check for large files, and replace the already
existing checks in the iotests 005 and 220 with this function.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191204154618.23560-2-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Thomas Huth 2019-12-04 16:46:12 +01:00 • committed by Alex Bennée
parent 3edaa995e6
commit 30729ae93b
3 changed files with 13 additions and 8 deletions
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6
tests/qemu-iotests/220
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@ -42,10 +42,8 @@ echo "== Creating huge file =="
# Sanity check: We require a file system that permits the creation
# of a HUGE (but very sparse) file. tmpfs works, ext4 does not.
if ! truncate --size=513T "$TEST_IMG"; then
_notrun "file system on $TEST_DIR does not support large enough files"
fi
rm "$TEST_IMG"
_require_large_file 513T
IMGOPTS='cluster_size=2M,refcount_bits=1' _make_test_img 513T
echo "== Populating refcounts =="