Our .bdrv_has_zero_init_truncate returns 1 if we detect that the OS
always 0-fills; we can use that same knowledge to implement
BDRV_REQ_ZERO_WRITE by ignoring it when the OS gives it to us for
free.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200428202905.770727-4-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
When using bdrv_file, .bdrv_has_zero_init_truncate always returns 1;
therefore, we can behave just like file-posix, and always implement
BDRV_REQ_ZERO_WRITE by ignoring it since the OS gives it to us for
free (note that file-posix.c had to use an 'if' because it shared code
between regular files and block devices, but in file-win32.c,
bdrv_host_device uses a separate .bdrv_file_open).
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200428202905.770727-3-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
block.c already defaults to 0 if we don't provide a callback; there's
no need to write a callback that always fails.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20200428202905.770727-2-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Calling bdrv_getlength() to get the pre-truncate file size will not
really work on block devices, because they have always the same length,
and trying to write beyond it will fail with a rather cryptic error
message.
Instead, we should use qcow2_get_last_cluster() and bdrv_getlength()
only as a fallback.
Before this patch:
$ truncate -s 1G test.img
$ sudo losetup -f --show test.img
/dev/loop0
$ sudo qemu-img create -f qcow2 -o preallocation=full /dev/loop0 64M
Formatting '/dev/loop0', fmt=qcow2 size=67108864 cluster_size=65536
preallocation=full lazy_refcounts=off refcount_bits=16
qemu-img: /dev/loop0: Could not resize image: Failed to resize refcount
structures: No space left on device
With this patch:
$ sudo qemu-img create -f qcow2 -o preallocation=full /dev/loop0 64M
Formatting '/dev/loop0', fmt=qcow2 size=67108864 cluster_size=65536
preallocation=full lazy_refcounts=off refcount_bits=16
qemu-img: /dev/loop0: Could not resize image: Failed to resize
underlying file: Preallocation mode 'full' unsupported for this
non-regular file
So as you can see, it still fails, but now the problem is missing
support on the block device level, so we at least get a better error
message.
Note that we cannot preallocate block devices on truncate by design,
because we do not know what area to preallocate. Their length is always
the same, the truncate operation does not change it.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200505141801.1096763-1-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
055 uses the backup block job to create a compressed backup of an
$IMGFMT image with both qcow2 and vmdk targets. However, cluster
allocation in vmdk is very slow because it flushes the image file after
each L2 update.
There is no reason why we need this level of safety in this test, so
let's disable flushes for vmdk. For the blockdev-backup tests this is
achieved by simply adding the cache.no-flush=on to the drive_add() for
the target. For drive-backup, the caching flags are copied from the
source node, so we'll also add the flag to the source node, even though
it is not vmdk.
This can make the test run significantly faster (though it doesn't make
a difference on tmpfs). In my usual setup it goes from ~45s to ~15s.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200505064618.16267-1-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This tests that the backup job catches situations where the target node
has a different size than the source node. It must also forbid resize
operations when the job is already running.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200430142755.315494-5-kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Since the introduction of a backup filter node in commit 00e30f05d, the
backup block job crashes when the target image is smaller than the
source image because it will try to write after the end of the target
node without having BLK_PERM_RESIZE. (Previously, the BlockBackend layer
would have caught this and errored out gracefully.)
We can fix this and even do better than the old behaviour: Check that
source and target have the same image size at the start of the block job
and unshare BLK_PERM_RESIZE. (This permission was already unshared
before the same commit 00e30f05d, but the BlockBackend that was used to
make the restriction was removed without a replacement.) This will
immediately error out when starting the job instead of only when writing
to a block that doesn't exist in the target.
Longer target than source would technically work because we would never
write to blocks that don't exist, but semantically these are invalid,
too, because a backup is supposed to create a copy, not just an image
that starts with a copy.
Fixes: 00e30f05de
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1778593
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200430142755.315494-4-kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
bdrv_get_device_name() will be an empty string with modern management
tools that don't use -drive. Use bdrv_get_device_or_node_name() instead
so that the node name is used if the BlockBackend is anonymous.
While at it, start with upper case to make the message consistent with
the rest of the function.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20200430142755.315494-3-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The test case forgot to specify the null-co size for the target node.
When adding a check to backup that both sizes match, this would fail
because of the size mismatch and not the behaviour that the test really
wanted to test.
Fixes: a541fcc27c
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200430142755.315494-2-kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
In order to avoid bitrot in the zero cluster code in VMDK, enable
zeroed_grain=on by default for the tests.
059 now unsets the default options because zeroed_grain=on works only
with some subformats and the test case tests many different subformats,
including those for which it doesn't work.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200430133007.170335-7-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
If we have a backup L2 table, we currently flush once after writing to
the active L2 table and again after writing to the backup table. A
single flush is enough and makes things a little less slow.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200430133007.170335-6-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
If a cluster is already zeroed, we don't have to call vmdk_L2update(),
which is rather slow because it flushes the image file.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200430133007.170335-5-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
When overwriting a zero cluster, we must not perform copy-on-write from
the backing file, but from a zeroed buffer.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200430133007.170335-4-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
m_data must contain valid data even for zero clusters when no cluster
was allocated in the image file. Without this, zero writes segfault with
images that have zeroed_grain=on.
For zero writes, we don't want to allocate a cluster in the image file
even in compressed files.
Fixes: 524089bce4
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200430133007.170335-3-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
m_data is used for zero clusters even though valid == 0. It really only
means that a new cluster was allocated in the image file. Rename it to
reflect this.
While at it, change it from int to bool, too.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200430133007.170335-2-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
After commit f01643fb8b when an image is
extended and BDRV_REQ_ZERO_WRITE is set then the new clusters are
zeroized.
The code however does not detect correctly situations when the old and
the new end of the image are within the same cluster. The problem can
be reproduced with these steps:
qemu-img create -f qcow2 backing.qcow2 1M
qemu-img create -f qcow2 -F qcow2 -b backing.qcow2 top.qcow2
qemu-img resize --shrink top.qcow2 520k
qemu-img resize top.qcow2 567k
In the last step offset - zero_start causes an integer wraparound.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Message-Id: <20200504155217.10325-1-berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200430124713.3067-9-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200430124713.3067-8-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200430124713.3067-7-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Instead of looping in each test, let's better refactor vmdk target case
as a subclass.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200430124713.3067-6-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Drop check for no block-jobs: it's obvious that there no jobs
immediately after vm.launch().
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200430124713.3067-5-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Skip test-case with quorum if quorum is not whitelisted.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200430124713.3067-4-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Test fails if bochs not whitelisted, so, skip it in this case.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200430124713.3067-3-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Some tests requires O_DIRECT, or want it by default. Introduce smarter
O_DIRECT handling:
- Check O_DIRECT in common.rc, if it is requested by selected
cache-mode.
- Support second fall-through argument in _default_cache_mode
Inspired-by: Max's 23e1d05411
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200430124713.3067-2-vsementsov@virtuozzo.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Mostly tidy-ups, but two new features:
cpu-throttle-tailslow for making a gentler throttle
xbzrle encoding rate measurement for getting a feal for xbzrle
performance.
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Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20200507a' into staging
Migration pull 2020-05-07
Mostly tidy-ups, but two new features:
cpu-throttle-tailslow for making a gentler throttle
xbzrle encoding rate measurement for getting a feal for xbzrle
performance.
# gpg: Signature made Thu 07 May 2020 18:00:27 BST
# gpg: using RSA key 45F5C71B4A0CB7FB977A9FA90516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full]
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7
* remotes/dgilbert/tags/pull-migration-20200507a:
migration/multifd: Do error_free after migrate_set_error to avoid memleaks
migration/multifd: fix memleaks in multifd_new_send_channel_async
migration/xbzrle: add encoding rate
migration/rdma: fix a memleak on error path in rdma_start_incoming_migration
migration/ram: Consolidate variable reset after placement in ram_load_postcopy()
migration/throttle: Add cpu-throttle-tailslow migration parameter
migration/colo: Add missing error-propagation code
docs/devel/migration: start a debugging section
migration: move the units of migrate parameters from milliseconds to ms
monitor/hmp-cmds: add hmp_handle_error() for hmp_migrate_set_speed()
migration/migration: improve error reporting for migrate parameters
migration: fix bad indentation in error_report()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When error happen in multifd_send_thread, it use error_copy to set migrate error in
multifd_send_terminate_threads(). We should call error_free after it.
Similarly, fix another two places in multifd_recv_thread/multifd_save_cleanup.
The leak stack:
Direct leak of 48 byte(s) in 1 object(s) allocated from:
#0 0x7f781af07cf0 in calloc (/lib64/libasan.so.5+0xefcf0)
#1 0x7f781a2ce22d in g_malloc0 (/lib64/libglib-2.0.so.0+0x5322d)
#2 0x55ee1d075c17 in error_setv /mnt/sdb/backup/qemu/util/error.c:61
#3 0x55ee1d076464 in error_setg_errno_internal /mnt/sdb/backup/qemu/util/error.c:109
#4 0x55ee1cef066e in qio_channel_socket_writev /mnt/sdb/backup/qemu/io/channel-socket.c:569
#5 0x55ee1cee806b in qio_channel_writev /mnt/sdb/backup/qemu/io/channel.c:207
#6 0x55ee1cee806b in qio_channel_writev_all /mnt/sdb/backup/qemu/io/channel.c:171
#7 0x55ee1cee8248 in qio_channel_write_all /mnt/sdb/backup/qemu/io/channel.c:257
#8 0x55ee1ca12c9a in multifd_send_thread /mnt/sdb/backup/qemu/migration/multifd.c:657
#9 0x55ee1d0607fc in qemu_thread_start /mnt/sdb/backup/qemu/util/qemu-thread-posix.c:519
#10 0x7f78159ae2dd in start_thread (/lib64/libpthread.so.0+0x82dd)
#11 0x7f78156df4b2 in __GI___clone (/lib64/libc.so.6+0xfc4b2)
Indirect leak of 52 byte(s) in 1 object(s) allocated from:
#0 0x7f781af07f28 in __interceptor_realloc (/lib64/libasan.so.5+0xeff28)
#1 0x7f78156f07d9 in __GI___vasprintf_chk (/lib64/libc.so.6+0x10d7d9)
#2 0x7f781a30ea6c in g_vasprintf (/lib64/libglib-2.0.so.0+0x93a6c)
#3 0x7f781a2e7cd0 in g_strdup_vprintf (/lib64/libglib-2.0.so.0+0x6ccd0)
#4 0x7f781a2e7d8c in g_strdup_printf (/lib64/libglib-2.0.so.0+0x6cd8c)
#5 0x55ee1d075c86 in error_setv /mnt/sdb/backup/qemu/util/error.c:65
#6 0x55ee1d076464 in error_setg_errno_internal /mnt/sdb/backup/qemu/util/error.c:109
#7 0x55ee1cef066e in qio_channel_socket_writev /mnt/sdb/backup/qemu/io/channel-socket.c:569
#8 0x55ee1cee806b in qio_channel_writev /mnt/sdb/backup/qemu/io/channel.c:207
#9 0x55ee1cee806b in qio_channel_writev_all /mnt/sdb/backup/qemu/io/channel.c:171
#10 0x55ee1cee8248 in qio_channel_write_all /mnt/sdb/backup/qemu/io/channel.c:257
#11 0x55ee1ca12c9a in multifd_send_thread /mnt/sdb/backup/qemu/migration/multifd.c:657
#12 0x55ee1d0607fc in qemu_thread_start /mnt/sdb/backup/qemu/util/qemu-thread-posix.c:519
#13 0x7f78159ae2dd in start_thread (/lib64/libpthread.so.0+0x82dd)
#14 0x7f78156df4b2 in __GI___clone (/lib64/libc.so.6+0xfc4b2)
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200506095416.26099-3-pannengyuan@huawei.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
When error happen in multifd_new_send_channel_async, 'sioc' will not be used
to create the multifd_send_thread. Let's free it to avoid a memleak. And also
do error_free after migrate_set_error() to avoid another leak in the same place.
The leak stack:
Direct leak of 2880 byte(s) in 8 object(s) allocated from:
#0 0x7f20b5118ae8 in __interceptor_malloc (/lib64/libasan.so.5+0xefae8)
#1 0x7f20b44df1d5 in g_malloc (/lib64/libglib-2.0.so.0+0x531d5)
#2 0x564133bce18b in object_new_with_type /mnt/sdb/backup/qemu/qom/object.c:683
#3 0x564133eea950 in qio_channel_socket_new /mnt/sdb/backup/qemu/io/channel-socket.c:56
#4 0x5641339cfe4f in socket_send_channel_create /mnt/sdb/backup/qemu/migration/socket.c:37
#5 0x564133a10328 in multifd_save_setup /mnt/sdb/backup/qemu/migration/multifd.c:772
#6 0x5641339cebed in migrate_fd_connect /mnt/sdb/backup/qemu/migration/migration.c:3530
#7 0x5641339d15e4 in migration_channel_connect /mnt/sdb/backup/qemu/migration/channel.c:92
#8 0x5641339cf5b7 in socket_outgoing_migration /mnt/sdb/backup/qemu/migration/socket.c:108
Direct leak of 384 byte(s) in 8 object(s) allocated from:
#0 0x7f20b5118cf0 in calloc (/lib64/libasan.so.5+0xefcf0)
#1 0x7f20b44df22d in g_malloc0 (/lib64/libglib-2.0.so.0+0x5322d)
#2 0x56413406fc17 in error_setv /mnt/sdb/backup/qemu/util/error.c:61
#3 0x564134070464 in error_setg_errno_internal /mnt/sdb/backup/qemu/util/error.c:109
#4 0x5641340851be in inet_connect_addr /mnt/sdb/backup/qemu/util/qemu-sockets.c:379
#5 0x5641340851be in inet_connect_saddr /mnt/sdb/backup/qemu/util/qemu-sockets.c:458
#6 0x5641340870ab in socket_connect /mnt/sdb/backup/qemu/util/qemu-sockets.c:1105
#7 0x564133eeaabf in qio_channel_socket_connect_sync /mnt/sdb/backup/qemu/io/channel-socket.c:145
#8 0x564133eeabf5 in qio_channel_socket_connect_worker /mnt/sdb/backup/qemu/io/channel-socket.c:168
Indirect leak of 360 byte(s) in 8 object(s) allocated from:
#0 0x7f20b5118ae8 in __interceptor_malloc (/lib64/libasan.so.5+0xefae8)
#1 0x7f20af901817 in __GI___vasprintf_chk (/lib64/libc.so.6+0x10d817)
#2 0x7f20b451fa6c in g_vasprintf (/lib64/libglib-2.0.so.0+0x93a6c)
#3 0x7f20b44f8cd0 in g_strdup_vprintf (/lib64/libglib-2.0.so.0+0x6ccd0)
#4 0x7f20b44f8d8c in g_strdup_printf (/lib64/libglib-2.0.so.0+0x6cd8c)
#5 0x56413406fc86 in error_setv /mnt/sdb/backup/qemu/util/error.c:65
#6 0x564134070464 in error_setg_errno_internal /mnt/sdb/backup/qemu/util/error.c:109
#7 0x5641340851be in inet_connect_addr /mnt/sdb/backup/qemu/util/qemu-sockets.c:379
#8 0x5641340851be in inet_connect_saddr /mnt/sdb/backup/qemu/util/qemu-sockets.c:458
#9 0x5641340870ab in socket_connect /mnt/sdb/backup/qemu/util/qemu-sockets.c:1105
#10 0x564133eeaabf in qio_channel_socket_connect_sync /mnt/sdb/backup/qemu/io/channel-socket.c:145
#11 0x564133eeabf5 in qio_channel_socket_connect_worker /mnt/sdb/backup/qemu/io/channel-socket.c:168
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200506095416.26099-2-pannengyuan@huawei.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Users may need to check the xbzrle encoding rate to know if the guest
memory is xbzrle encoding-friendly, and dynamically turn off the
encoding if the encoding rate is low.
Signed-off-by: Yi Sun <yi.y.sun@intel.com>
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Message-Id: <1588208375-19556-1-git-send-email-wei.w.wang@intel.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
'rdma->host' is malloced in qemu_rdma_data_init, but forgot to free on the error
path in rdma_start_incoming_migration(), this patch fix that.
The leak stack:
Direct leak of 2 byte(s) in 1 object(s) allocated from:
#0 0x7fb7add18ae8 in __interceptor_malloc (/lib64/libasan.so.5+0xefae8)
#1 0x7fb7ad0df1d5 in g_malloc (/lib64/libglib-2.0.so.0+0x531d5)
#2 0x7fb7ad0f8b32 in g_strdup (/lib64/libglib-2.0.so.0+0x6cb32)
#3 0x55a0464a0f6f in qemu_rdma_data_init /mnt/sdb/qemu/migration/rdma.c:2647
#4 0x55a0464b0e76 in rdma_start_incoming_migration /mnt/sdb/qemu/migration/rdma.c:4020
#5 0x55a0463f898a in qemu_start_incoming_migration /mnt/sdb/qemu/migration/migration.c:365
#6 0x55a0458c75d3 in qemu_init /mnt/sdb/qemu/softmmu/vl.c:4438
#7 0x55a046a3d811 in main /mnt/sdb/qemu/softmmu/main.c:48
#8 0x7fb7a8417872 in __libc_start_main (/lib64/libc.so.6+0x23872)
#9 0x55a04536b26d in _start (/mnt/sdb/qemu/build/x86_64-softmmu/qemu-system-x86_64+0x286926d)
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Pan Nengyuan <pannengyuan@huawei.com>
Message-Id: <20200420102727.17339-1-pannengyuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Let's consolidate resetting the variables.
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Juan Quintela <quintela@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200421085300.7734-10-david@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Fixup for context conflicts with 91ba442
At the tail stage of throttling, the Guest is very sensitive to
CPU percentage while the @cpu-throttle-increment is excessive
usually at tail stage.
If this parameter is true, we will compute the ideal CPU percentage
used by the Guest, which may exactly make the dirty rate match the
dirty rate threshold. Then we will choose a smaller throttle increment
between the one specified by @cpu-throttle-increment and the one
generated by ideal CPU percentage.
Therefore, it is compatible to traditional throttling, meanwhile
the throttle increment won't be excessive at tail stage. This may
make migration time longer, and is disabled by default.
Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Message-Id: <20200413101508.54793-1-zhukeqian1@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Explain how to use analyze-migration.py, this may help.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20200330174852.456148-1-marcandre.lureau@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <474bb6cf67defb8be9de5035c11aee57a680557a.1585641083.git.maozhongyi@cmss.chinamobile.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <305323f835436023c53d759f5ab18af3ec874183.1585641083.git.maozhongyi@cmss.chinamobile.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
use QERR_INVALID_PARAMETER_VALUE instead of
"Parameter '%s' expects" for consistency.
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Message-Id: <4ce71da4a5f98ad6ead0806ec71043473dcb4c07.1585641083.git.maozhongyi@cmss.chinamobile.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
bad indentation conflicts with CODING_STYLE doc.
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Message-Id: <09f7529c665cac0c6a5e032ac6fdb6ca701f7e37.1585329482.git.maozhongyi@cmss.chinamobile.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Extend the hash benchmark so that it can validate all algorithms
supported by QEMU instead of being limited to sha256.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Currently if you attampt to create too large file with luks you
get the following error message:
Formatting 'test.luks', fmt=luks size=17592186044416 key-secret=sec0
qemu-img: test.luks: Could not resize file: File too large
While for raw format the error message is
qemu-img: test.img: The image size is too large for file format 'raw'
The reason for this is that qemu-img checks for errono of the failure,
and presents the later error when it is -EFBIG
However crypto generic code 'swallows' the errno and replaces it
with -EIO.
As an attempt to make it better, we can make luks driver,
detect -EFBIG and in this case present a better error message,
which is what this patch does
The new error message is:
qemu-img: error creating test.luks: The requested file size is too large
Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1534898
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
We can delete the redundant type conversion if
we set the the AES_KEY parameter with 'const' in
qcrypto_cipher_aes_ecb_(en|de)crypt() function.
Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Change condition from QCRYPTO_SECRET_FORMAT_RAW
to QCRYPTO_SECRET_FORMAT_BASE64 in if-operator, because
this is potential error if you add another format value.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Alexey Krasikov <alex-krasikov@yandex-team.ru>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This fixes the condition-check done by the "loaded" property
getter, such that the property returns true even when the
secret is loaded by the 'file' option.
Signed-off-by: Tong Ho <tong.ho@xilinx.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
First pull request for qemu-5.1. This includes:
* Removal of all remaining cases where we had CAS triggered reboots
* A number of improvements to NMI injection
* Support for partition scoped radix translation in softmmu
* Some fixes for NVDIMM handling
* A handful of other minor fixes
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Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-5.1-20200507' into staging
ppc patch queue for 2020-04-07
First pull request for qemu-5.1. This includes:
* Removal of all remaining cases where we had CAS triggered reboots
* A number of improvements to NMI injection
* Support for partition scoped radix translation in softmmu
* Some fixes for NVDIMM handling
* A handful of other minor fixes
# gpg: Signature made Thu 07 May 2020 06:00:55 BST
# gpg: using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-5.1-20200507:
target-ppc: fix rlwimi, rlwinm, rlwnm for Clang-9
spapr_nvdimm: Tweak error messages
spapr_nvdimm.c: make 'label-size' mandatory
target/ppc: Add support for Radix partition-scoped translation
target/ppc: Rework ppc_radix64_walk_tree() for partition-scoped translation
target/ppc: Extend ppc_radix64_check_prot() with a 'partition_scoped' bool
target/ppc: Introduce ppc_radix64_xlate() for Radix tree translation
spapr: Don't allow unplug of NVLink2 devices
target/ppc: Assert if HV mode is set when running under a pseries machine
target/ppc: Introduce a relocation bool in ppc_radix64_handle_mmu_fault()
target/ppc: Enforce that the root page directory size must be at least 5
spapr: Drop CAS reboot flag
spapr/cas: Separate CAS handling from rebuilding the FDT
spapr: Simplify selection of radix/hash during CAS
ppc/pnv: Add support for NMI interface
ppc/spapr: tweak change system reset helper
spapr: Don't check capabilities removed between CAS calls
target/ppc: Improve syscall exception logging
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Starting with Clang v9, -Wtype-limits is implemented and triggers a
few "result of comparison is always true" errors when compiling PPC32
targets.
The comparisons seem to be necessary only on PPC64, since the
else branch in PPC32 only has a "g_assert_not_reached();" in all cases.
This patch restructures the code so that the actual if/else is done on a
local flag variable, that is set accordingly for PPC64, and always
true for PPC32.
Signed-off-by: Daniele Buono <dbuono@linux.vnet.ibm.com>
Message-Id: <20200505183818.32688-2-dbuono@linux.vnet.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The restrictions here (which are checked at pre-plug time) are PAPR
specific, rather than being inherent to the NVDIMM devices. Adjust the
error messages to be clearer about this.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The pseries machine does not support NVDIMM modules without label.
Attempting to do so, even if the overall block size is aligned with
256MB, will seg fault the guest kernel during NVDIMM probe. This
can be avoided by forcing 'label-size' to always be present for
sPAPR NVDIMMs.
The verification was put before the alignment check because the
presence of label-size affects the alignment calculation, so
it's not optimal to warn the user about an alignment error,
then about the lack of label-size, then about a new alignment
error when the user sets a label-size.
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-Id: <20200413203628.31636-1-danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The Radix tree translation model currently supports process-scoped
translation for the PowerNV machine (Hypervisor mode) and for the
pSeries machine (Guest mode). Guests running under an emulated
Hypervisor (PowerNV machine) require a new type of Radix translation,
called partition-scoped, which is missing today.
The Radix tree translation is a 2 steps process. The first step,
process-scoped translation, converts an effective Address to a guest
real address, and the second step, partition-scoped translation,
converts a guest real address to a host real address.
There are difference cases to covers :
* Hypervisor real mode access: no Radix translation.
* Hypervisor or host application access (quadrant 0 and 3) with
relocation on: process-scoped translation.
* Guest OS real mode access: only partition-scoped translation.
* Guest OS real or guest application access (quadrant 0 and 3) with
relocation on: both process-scoped translation and partition-scoped
translations.
* Hypervisor access in quadrant 1 and 2 with relocation on: both
process-scoped translation and partition-scoped translations.
The radix tree partition-scoped translation is performed using tables
pointed to by the first double-word of the Partition Table Entries and
process-scoped translation uses tables pointed to by the Process Table
Entries (second double-word of the Partition Table Entries).
Both partition-scoped and process-scoped translations process are
identical and thus the radix tree traversing code is largely reused.
However, errors in partition-scoped translations generate hypervisor
exceptions.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200403140056.59465-5-clg@kaod.org>
[dwg: Fixup from Greg Kurz folded in]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
The ppc_radix64_walk_tree() routine walks through the nested radix
tables to look for a PTE.
Split it in two and introduce a new routine ppc_radix64_next_level()
which we will use for partition-scoped Radix translation when
translating the process tree addresses. The prototypes are slightly
change to use a 'AddressSpace *' parameter, instead of a 'PowerPCCPU *'
which is not required, and to return an error code instead of a PTE
value. It clarifies error handling in the callers.
Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200403140056.59465-4-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
