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Eric Blake 048c5fd1bf qcow2: Allow discard of final unaligned cluster 
As mentioned in commit 0c1bd46, we ignored requests to
discard the trailing cluster of an unaligned image.  While
discard is an advisory operation from the guest standpoint,
(and we are therefore free to ignore any request), our
qcow2 implementation exploits the fact that a discarded
cluster reads back as 0.  As long as we discard on cluster
boundaries, we are fine; but that means we could observe
non-zero data leaked at the tail of an unaligned image.

Enhance iotest 66 to cover this case, and fix the implementation
to honor a discard request on the final partial cluster.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 20170407013709.18440-1-eblake@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
 		2017-04-28 16:02:03 +02:00
..
acpi-test-data tests/acpi: update DSDT after last patch 2017-03-02 07:31:26 +02:00
data tests: use static qga config file 2016-07-25 13:23:18 -05:00
docker docker/dockerfiles/debian-s390-cross: include clang 2017-03-10 15:05:22 +08:00
guest-debug tests/guest-debug: introduce basic gdbstub tests 2015-12-17 13:37:15 +00:00
image-fuzzer tests: Use Python 2.6 "except E as ..." syntax 2016-02-08 17:29:54 +01:00
libqos tests: fix virtio-blk-test leaks 2017-03-01 11:58:57 +04:00
migration tests: introduce a framework for testing migration performance 2016-07-22 13:23:39 +05:30
multiboot tests/multiboot: Add test for modules 2015-01-26 12:22:44 +01:00
qapi-schema qapi2texi: Fix translation of *strong* and _emphasized_ 2017-03-21 10:42:58 +01:00
qemu-iotests qcow2: Allow discard of final unaligned cluster 2017-04-28 16:02:03 +02:00
rocker rocker: tests: don't need to specify master/self when setting vlans 2015-07-07 13:13:22 +01:00
tcg target/openrisc: Rename the cpu from or32 to or1k 2017-02-14 08:14:58 +11:00
vmstate-static-checker-data tests: vmstate static checker: add size mismatch inside substructure 2014-06-23 19:14:52 +02:00
.gitignore test-qapi-util: New, covering qapi/qapi-util.c 2017-03-07 16:07:47 +01:00
Makefile.include tests: Add a tester for HMP commands 2017-04-26 14:42:31 +01:00
ac97-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
acpi-utils.c tests: Move reusable ACPI code into a utility file 2017-03-02 07:14:27 +02:00
acpi-utils.h tests/acpi: don't pack a structure 2017-03-30 19:12:44 +03:00
ahci-test.c ahci-test: add QMP tray test for ATAPI 2016-11-14 11:15:55 -05:00
atomic_add-bench.c tests: add atomic_add-bench 2016-10-26 08:29:01 -07:00
bios-tables-test.c virtio, pc: fixes, features 2017-03-03 10:09:03 +00:00
boot-order-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
boot-sector.c tests/boot-sector: Increase time-out to 90 seconds 2016-10-14 10:06:47 +11:00
boot-sector.h tests/boot-sector: Use mkstemp() to create a unique file name 2016-10-14 10:06:47 +11:00
boot-serial-test.c boot-serial-test: use -no-shutdown 2017-03-24 13:39:50 +00:00
check-block.sh tests: allow to specify list of formats to test for check-block.sh 2016-09-23 13:36:09 +02:00
check-qdict.c Don't check qobject_type() before qobject_to_qdict() 2017-02-22 19:52:01 +01:00
check-qfloat.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
check-qint.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
check-qjson.c check-qjson: Test errors from qobject_from_json() 2017-03-07 16:07:47 +01:00
check-qlist.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
check-qnull.c qapi: Drop unused non-strict qobject input visitor 2017-03-05 09:14:19 +01:00
check-qom-interface.c tests: fix check-qom-interface leaks 2016-09-08 17:57:32 +04:00
check-qom-proplist.c tests: fix check-qom-proplist leaks 2016-09-08 17:57:32 +04:00
check-qstring.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
crypto-tls-x509-helpers.c tests: Clean up includes 2016-02-16 14:29:27 +00:00
crypto-tls-x509-helpers.h clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
device-introspect-test.c qom: Make all interface types abstract 2017-01-16 17:52:34 +01:00
display-vga-test.c qtest: add display-vga-test to ppc64 2017-01-31 10:10:13 +11:00
drive_del-test.c tests: add drive_del-test to ppc/ppc64 2016-07-29 14:14:15 +10:00
ds1338-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
e1000-test.c tests: fix e1000-test leak 2017-03-01 11:51:28 +04:00
e1000e-test.c tests: fix e1000e leaks 2017-03-01 11:51:28 +04:00
eepro100-test.c tests: fix eepro100-test leak 2017-03-01 11:51:05 +04:00
endianness-test.c tests: fix endianness-test leaks 2017-03-01 00:09:28 +04:00
es1370-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
fdc-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
fw_cfg-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
hd-geo-test.c tests: fix hd-geo-test leaks 2017-03-01 11:51:04 +04:00
i440fx-test.c tests: fix i440fx-test leaks 2017-03-01 11:51:28 +04:00
i82801b11-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
ide-test.c tests: fix ide-test leaks 2017-03-01 11:51:04 +04:00
intel-hda-test.c coccinelle: Remove unnecessary variables for function return value 2016-06-20 16:38:13 +02:00
io-channel-helpers.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
io-channel-helpers.h io: add QIOChannelSocket class 2015-12-18 12:18:31 +00:00
ioh3420-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
iothread.c aio: introduce aio_co_schedule and aio_co_wake 2017-02-21 11:14:07 +00:00
iothread.h aio: introduce aio_co_schedule and aio_co_wake 2017-02-21 11:14:07 +00:00
ipmi-bt-test.c tests: fix ipmi-bt-test leak 2017-03-01 11:51:05 +04:00
ipmi-kcs-test.c tests: fix ipmi-kcs-test leak 2017-03-01 11:51:05 +04:00
ipoctal232-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
ivshmem-test.c qtest: add ivshmem-test for ppc64 2017-01-31 10:10:13 +11:00
libqtest.c libqtest: Add a generic function to run a callback function for every machine 2017-04-26 14:42:31 +01:00
libqtest.h libqtest: Add a generic function to run a callback function for every machine 2017-04-26 14:42:31 +01:00
m25p80-test.c aspeed/smc: extend tests for Command mode 2017-01-20 11:15:08 +00:00
m48t59-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
ne2000-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
nvme-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
pc-cpu-test.c libqtest: Add a generic function to run a callback function for every machine 2017-04-26 14:42:31 +01:00
pcnet-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
pkix_asn1_tab.c qtest: fix make check complaint in crypto module 2016-10-19 10:09:24 +01:00
pnv-xscom-test.c powernv: Don't test POWER9 CPU yet 2017-03-03 11:30:59 +11:00
postcopy-test.c tests: fix qmp response leak 2017-03-01 00:09:28 +04:00
prom-env-test.c tests/prom-env: Enable the test for the sun4u machine, too 2017-02-28 09:03:39 +03:00
ptimer-test-stubs.c tests: fix ptimer leaks 2017-03-01 00:09:28 +04:00
ptimer-test.c tests: fix ptimer leaks 2017-03-01 00:09:28 +04:00
ptimer-test.h tests: ptimer: Change the copyright comment 2016-10-24 16:26:53 +01:00
pvpanic-test.c tests: fix qmp response leak 2017-03-01 00:09:28 +04:00
pxe-test.c tests/boot-sector: Use mkstemp() to create a unique file name 2016-10-14 10:06:47 +11:00
q35-test.c tests: fix q35-test leaks 2017-03-01 11:50:33 +04:00
qemu-iotests-quick.sh qemu-iotests: Speed up make check-block 2015-01-13 11:47:55 +00:00
qht-bench.c qht-bench: relax test_start/stop atomic accesses 2016-10-24 15:27:19 +02:00
qmp-test.c qapi: Drop unused non-strict qobject input visitor 2017-03-05 09:14:19 +01:00
qom-test.c libqtest: Add a generic function to run a callback function for every machine 2017-04-26 14:42:31 +01:00
rcutorture.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
rtas-test.c tests: don't check if qtest_spapr_boot() returns NULL 2016-10-28 09:36:58 +11:00
rtc-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
rtl8139-test.c libqos: Change PCI accessors to take opaque BAR handle 2016-10-28 09:38:27 +11:00
spapr-phb-test.c spapr: Improved placement of PCI host bridges in guest memory map 2016-10-16 12:04:15 +11:00
tco-test.c tests: fix tco-test leaks 2017-03-01 11:51:25 +04:00
test-aio-multithread.c cpus: define QEMUTimerListNotifyCB for QEMU system emulation 2017-03-14 13:28:29 +01:00
test-aio.c cpus: define QEMUTimerListNotifyCB for QEMU system emulation 2017-03-14 13:28:29 +01:00
test-arm-mptimer.c tests: Add tests for the ARM MPTimer 2016-10-24 16:26:54 +01:00
test-base64.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-bitcnt.c tests: New test-bitcnt 2017-01-10 08:49:59 -08:00
test-bitops.c bitops.h: Implement half-shuffle and half-unshuffle ops 2016-06-17 15:23:51 +01:00
test-blockjob-txn.c tests/block-job-txn: Don't start block job before adding to txn 2017-04-11 20:07:15 +08:00
test-blockjob.c tests: Remove FIXME comments 2017-02-28 20:47:50 +01:00
test-bufferiszero.c cutils: Add test for buffer_is_zero 2016-09-13 19:13:32 +02:00
test-char.c char: rename CharDriverState Chardev 2017-01-27 18:07:59 +01:00
test-clone-visitor.c qapi: Add new clone visitor 2016-07-06 10:52:04 +02:00
test-coroutine.c test-coroutine: test qemu_coroutine_entered() 2016-09-28 17:11:23 +01:00
test-crypto-afsplit.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-crypto-block.c crypto: Make errp the last parameter of functions 2017-04-24 09:13:22 +02:00
test-crypto-cipher.c crypto: add 3des-ede support when using libgcrypt/nettle 2016-12-21 14:26:26 +00:00
test-crypto-hash.c crypto: fix initialization of crypto in tests 2016-10-19 10:23:55 +01:00
test-crypto-hmac.c crypto: add HMAC algorithms testcases 2016-12-22 09:24:59 +00:00
test-crypto-ivgen.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-crypto-pbkdf.c crypto: support more hash algorithms for pbkdf 2016-09-19 16:30:45 +01:00
test-crypto-secret.c crypto: remove temp files on completion of secrets test 2016-06-13 12:41:17 +01:00
test-crypto-tlscredsx509.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-crypto-tlssession.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-crypto-xts.c crypto: rename OUT to out in xts test to avoid clash on MinGW 2016-07-04 10:46:59 +01:00
test-cutils.c util/cutils: Change qemu_strtosz*() from int64_t to uint64_t 2017-02-23 20:35:36 +01:00
test-filter-mirror.c tests: fix qmp response leak 2017-03-01 00:09:28 +04:00
test-filter-redirector.c tests: fix qmp response leak 2017-03-01 00:09:28 +04:00
test-hbitmap.c test-hbitmap: Add hbitmap_is_serializable() calls 2017-01-26 10:25:01 +08:00
test-hmp.c tests: Add a tester for HMP commands 2017-04-26 14:42:31 +01:00
test-int128.c int128: Use __int128 if available 2016-10-26 08:29:00 -07:00
test-io-channel-buffer.c tests: Clean up includes 2016-02-16 14:29:27 +00:00
test-io-channel-command.c tests: fix leaks in test-io-channel-command 2017-03-01 00:09:28 +04:00
test-io-channel-file.c include/qemu/osdep.h: Don't include qapi/error.h 2016-03-22 22:20:15 +01:00
test-io-channel-socket.c io: fix incoming client socket initialization 2017-04-04 16:17:03 +01:00
test-io-channel-tls.c io: change the QIOTask callback signature 2017-01-23 15:32:18 +00:00
test-io-task.c io: fix possible double free of task error object 2017-01-26 10:26:18 +00:00
test-iov.c tests: fix test-iov leaks 2016-09-08 17:57:32 +04:00
test-keyval.c test-keyval: Cover alternate and 'any' type 2017-03-21 10:42:06 +01:00
test-logging.c test-logging: don't hard-code paths in /tmp 2016-08-19 12:44:11 +01:00
test-mul64.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-netfilter.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-opts-visitor.c qapi: Fix QemuOpts visitor regression on unvisited input 2017-03-22 19:24:34 +01:00
test-qapi-util.c qapi: New parse_qapi_name() 2017-03-07 16:07:47 +01:00
test-qdev-global-props.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-qdist.c qdist: return "(empty)" instead of NULL when printing an empty dist 2016-08-03 18:44:56 +02:00
test-qemu-opts.c tests: Use error_free_or_abort() where appropriate 2017-03-15 08:52:09 +01:00
test-qga.c qemu-ga patch queue for 2.9 2017-03-07 07:32:28 +00:00
test-qht-par.c clean-includes: run it once more 2016-06-16 18:39:03 +02:00
test-qht.c test-qht: perform lookups under rcu_read_lock 2016-10-06 18:04:13 +02:00
test-qmp-commands.c qapi: Drop unused non-strict qobject input visitor 2017-03-05 09:14:19 +01:00
test-qmp-event.c test-qmp-event: Simplify and tighten event_test_emit() 2017-02-22 19:51:59 +01:00
test-qobject-input-visitor.c test-qobject-input-visitor: Cover visit_type_uint64() 2017-03-21 20:01:39 +01:00
test-qobject-output-visitor.c tests: Use error_free_or_abort() where appropriate 2017-03-15 08:52:09 +01:00
test-rcu-list.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-replication.c block: Make errp the last parameter of bdrv_img_create 2017-04-24 09:12:59 +02:00
test-shift128.c host-utils: Implement unsigned quadword left/right shift and unit tests 2017-01-31 10:10:14 +11:00
test-string-input-visitor.c qapi: Fix string input visitor regression for empty lists 2017-03-21 10:43:01 +01:00
test-string-output-visitor.c qapi: rename *qmp-*-visitor* to *qobject-*-visitor* 2016-10-25 16:25:48 +02:00
test-thread-pool.c test-thread-pool: use generic AioContext infrastructure 2017-02-21 11:14:07 +00:00
test-throttle.c throttle: make throttle_config(throttle_get_config()) symmetric 2017-04-21 10:36:12 +01:00
test-timed-average.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-uuid.c test-uuid: fix leak 2016-11-11 20:53:23 +08:00
test-visitor-serialization.c test-visitor-serialization: Pass &error_abort to qobject_from_json() 2017-03-07 16:07:47 +01:00
test-vmstate.c tests/test-vmstate.c: test array of ptr to primitive 2017-02-28 11:30:22 +00:00
test-write-threshold.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-x86-cpuid-compat.c target-i386: Print warning when mixing [+-]foo and foo=(on|off) 2016-10-31 16:20:59 -02:00
test-x86-cpuid.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
test-xbzrle.c util: move declarations out of qemu-common.h 2016-03-22 22:20:17 +01:00
tmp105-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
tpci200-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
usb-hcd-ehci-test.c tests: fix usb-test leaks 2017-03-01 11:51:29 +04:00
usb-hcd-ohci-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
usb-hcd-uhci-test.c tests: fix usb-test leaks 2017-03-01 11:51:29 +04:00
usb-hcd-xhci-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
vhost-user-bridge.c tests/vhost-user-bridge: use contrib/libvhost-user 2016-12-16 01:14:38 +02:00
vhost-user-test.c tests: fix vhost-user-test leaks 2017-03-01 11:51:00 +04:00
virtio-9p-test.c tests/virtio-9p-test: Don't call le*_to_cpus on fields of packed struct 2017-03-27 21:15:31 +02:00
virtio-balloon-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
virtio-blk-test.c tests: fix virtio-blk-test leaks 2017-03-01 11:58:57 +04:00
virtio-console-test.c coccinelle: Remove unnecessary variables for function return value 2016-06-20 16:38:13 +02:00
virtio-net-test.c tests: enable virtio tests on SPAPR 2016-10-28 09:36:58 +11:00
virtio-rng-test.c tests: enable virtio tests on SPAPR 2016-10-28 09:36:58 +11:00
virtio-scsi-test.c tests: fix virtio-scsi-test leak 2017-03-01 11:51:28 +04:00
virtio-serial-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
vmxnet3-test.c tests: Remove unnecessary glib.h includes 2016-06-07 18:19:24 +03:00
wdt_ib700-test.c coccinelle: Remove unnecessary variables for function return value 2016-06-20 16:38:13 +02:00