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iotests: Do not suppress segfaults in bash tests

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Currently, if a qemu/qemu-io/qemu-img/qemu-nbd invocation receives a
segmentation fault, that message is invisible in most cases since the
output is generally filtered and bash suppresses the segmentation fault
notice for any but the last element of a pipe.

Most of the time, the test will then fail anyway because of missing
output, but not necessarily (as happened with test 82 recently).

Fix this by making the corresponding environment variables point to
wrapper functions which execute the respective command in a subshell.

Giving options to qemu/qemu-io/qemu-img and path names with spaces were
broken for the Python tests; this patch "accidentally" fixes that.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2015-09-02 20:52:27 +02:00 • committed by Kevin Wolf
parent 0ed82f7a09
commit 934659c460
8 changed files with 67 additions and 31 deletions
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19
tests/qemu-iotests/039
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@ -47,13 +47,6 @@ _supported_os Linux
_default_cache_mode "writethrough"
_supported_cache_modes "writethrough"
_subshell_exec()
{
# Executing crashing commands in a subshell prevents information like the
# "Killed" line from being lost
(exec "$@")
}
size=128M
echo
@ -74,8 +67,8 @@ echo "== Creating a dirty image file =="
IMGOPTS="compat=1.1,lazy_refcounts=on"
_make_test_img $size
_subshell_exec $QEMU_IO -c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
$QEMU_IO -c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
| _filter_qemu_io
# The dirty bit must be set
@ -109,8 +102,8 @@ echo "== Opening a dirty image read/write should repair it =="
IMGOPTS="compat=1.1,lazy_refcounts=on"
_make_test_img $size
_subshell_exec $QEMU_IO -c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
$QEMU_IO -c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
| _filter_qemu_io
# The dirty bit must be set
@ -127,8 +120,8 @@ echo "== Creating an image file with lazy_refcounts=off =="
IMGOPTS="compat=1.1,lazy_refcounts=off"
_make_test_img $size
_subshell_exec $QEMU_IO -c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
$QEMU_IO -c "write -P 0x5a 0 512" \
-c "sigraise $(kill -l KILL)" "$TEST_IMG" 2>&1 \
| _filter_qemu_io
# The dirty bit must not be set since lazy_refcounts=off