Minimal implementation: for structured error only error_report error
message.
Note that test 83 is now more verbose, because the implementation
prints more warnings about unexpected communication errors; perhaps
future patches should tone things down by using trace messages
instead of traces, but the common case of successful communication
is no noisier than before.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171027104037.8319-13-eblake@redhat.com>
An upcoming change to block/nbd-client.c will want to read the
tail of a structured reply chunk directly from the wire. Move
this function to make it easier.
Based on a patch from Vladimir Sementsov-Ogievskiy.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20171027104037.8319-12-eblake@redhat.com>
In following patch nbd_receive_reply will be used both for simple
and structured reply header receiving.
NBDReply is altered into union of simple reply header and structured
reply chunk header, simple error translation moved to block/nbd-client
to be consistent with further structured reply error translation.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171027104037.8319-11-eblake@redhat.com>
Split out nbd_request_simple_option to be reused for structured reply
option.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171027104037.8319-10-eblake@redhat.com>
The NBD spec permits including a human-readable error string if
structured replies are in force, so we might as well send the
client the message that we logged on any error.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20171027104037.8319-9-eblake@redhat.com>
Minimal implementation of structured read: one structured reply chunk,
no segmentation.
Minimal structured error implementation: no text message.
Support DF flag, but just ignore it, as there is no segmentation any
way.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171027104037.8319-8-eblake@redhat.com>
Consolidate the response for a non-zero-length option payload
into a new function, nbd_reject_length(). This check will
also be used when introducing support for structured replies.
Note that STARTTLS response differs based on time: if the connection
is still unencrypted, we set fatal to true (a client that can't
request TLS correctly may still think that we are ready to start
the TLS handshake, so we must disconnect); while if the connection
is already encrypted, the client is sending a bogus request but
is no longer at risk of being confused by continuing the connection.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171027104037.8319-7-eblake@redhat.com>
[eblake: correct return value on STARTTLS]
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Instead of making each caller check whether a transmission error
occurred, we can sink a common error check to the end of the loop.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20171027104037.8319-6-eblake@redhat.com>
[eblake: squash in compiler warning fix]
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
When the server is read-only, we were already reporting an error
message for NBD_CMD_WRITE_ZEROES, but failed to set errp for a
similar NBD_CMD_WRITE. This will matter more once structured
replies allow the server to propagate the errp information back
to the client. While at it, use an error message that makes a
bit more sense if viewed on the client side.
Note that when using qemu-io to test qemu-nbd behavior, it is
rather difficult to convince qemu-io to send protocol violations
(such as a read beyond bounds), because we have a lot of active
checking on the client side that a qemu-io request makes sense
before it ever goes over the wire to the server. The case of a
client attempting a write when the server is started as
'qemu-nbd -r' is one of the few places where we can easily test
error path handling, without having to resort to hacking in known
temporary bugs to either the server or client. [Maybe we want a
future patch to the client to do up-front checking on writes to a
read-only export, the way it does up-front bounds checking; but I
don't see anything in the NBD spec that points to a protocol
violation in our current behavior.]
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20171027104037.8319-5-eblake@redhat.com>
Upcoming patches will implement the NBD structured reply
extension [1] for both client and server roles. Declare the
constants, structs, and lookup routines that will be valuable
whether the server or client code is backported in isolation.
This includes moving one constant from an internal header to
the public header, as part of the structured read processing
will be done in block/nbd-client.c rather than nbd/client.c.
[1]https://github.com/NetworkBlockDevice/nbd/blob/extension-structured-reply/doc/proto.md
Based on patches from Vladimir Sementsov-Ogievskiy.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20171027104037.8319-4-eblake@redhat.com>
This is needed in preparation for structured reply handling,
as we will be performing the translation from NBD error to
system errno value higher in the stack at block/nbd-client.c.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20171027104037.8319-3-eblake@redhat.com>
NBD errors were originally sent over the wire based on Linux errno
values; but not all the world is Linux, and not all platforms share
the same values. Since a number isn't very easy to decipher on all
platforms, update the trace messages to include the name of NBD
errors being sent/received over the wire. Tweak the trace messages
to be at the point where we are using the NBD error, not the
translation to the host errno values.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20171027104037.8319-2-eblake@redhat.com>
- missing \r in the BIOS console output
- CPU type name is now "s390x-cpu"
- fixup for the host-model on z14 and older machine versions
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Merge remote-tracking branch 'remotes/borntraeger/tags/s390x-20171030' into staging
s390x: fixups for 2.11
- missing \r in the BIOS console output
- CPU type name is now "s390x-cpu"
- fixup for the host-model on z14 and older machine versions
# gpg: Signature made Mon 30 Oct 2017 08:34:15 GMT
# gpg: using RSA key 0x117BBC80B5A61C7C
# gpg: Good signature from "Christian Borntraeger (IBM) <borntraeger@de.ibm.com>"
# Primary key fingerprint: F922 9381 A334 08F9 DBAB FBCA 117B BC80 B5A6 1C7C
* remotes/borntraeger/tags/s390x-20171030:
s390-*.img: update s390 bios with latest fixes
s390-ccw: print carriage return with new lines
s390x/kvm: use cpu model for gscb on compat machines
target/s390x: change CPU type name to "s390x-cpu"
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20171029' into staging
migration/next for 20171029
# gpg: Signature made Sun 29 Oct 2017 13:07:43 GMT
# gpg: using RSA key 0xF487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>"
# gpg: aka "Juan Quintela <quintela@trasno.org>"
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723
* remotes/juanquintela/tags/migration/20171029:
tests: check that migration parameters are really assigned
tests: Don't abuse global_qtest
tests: Factorize out migrate_test_start/end
tests: Refactor setting of parameters/capabilities
tests: rename postcopy-test to migration-test
migration: Make xbzrle_cache_size a migration parameter
migration: No need to return the size of the cache
migration: Don't play games with the requested cache size
migration: Make sure that we pass the right cache size
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
includes
7618c0aefe ("s390-ccw: print carriage return with new lines")
a8fbbf1db7 ("s390: set DHCP client architecure id for netboot")
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
The sclp console in the s390 bios writes raw data,
leading console emulators (such as virsh console) to
treat a new line ('\n') as just a new line instead
of as a Unix line feed. Because of this, output
appears in a "stair case" pattern.
Let's print \r\n on every occurrence of a new line
in the string passed to write to amend this issue.
This is in sync with the guest Linux code in
drivers/s390/char/sclp_vt220.c which also does a line feed
conversion in the console part of the driver.
This fixes the s390-ccw and s390-netboot output like
$ virsh start test --console
Domain test started
Connected to domain test
Escape character is ^]
Network boot starting...
Using MAC address: 02:01:02:03:04:05
Requesting information via DHCP: 010
Signed-off-by: Collin L. Walling <walling@linux.vnet.ibm.com>
Message-Id: <1509120893-28054-1-git-send-email-walling@linux.vnet.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Starting a guest with
<os>
<type arch='s390x' machine='s390-ccw-virtio-2.9'>hvm</type>
</os>
<cpu mode='host-model'/>
on an IBM z14 results in
"qemu-system-s390x: Some features requested in the CPU model are not
available in the configuration: gs"
This is because guarded storage is fenced for compat machines that did
not have guarded storage support. While this prevents future migration
abort (by not starting the guest at all), not being able to start a
"host-model" guest is very much unexpected. As it turns out, even if we
would modify libvirt to not expand the cpu model to contain "gs" for
compat machines, it cannot guarantee that a migration will succeed. For
example if the kernel changes its features (or the user has nested=1 on
one host but not on the other) the migration will fail nevertheless. So
instead of fencing "gs" for machines <= 2.9 lets allow it for all
machine types that support the CPU model. This will make "host-model"
runnable all the time, while relying on the CPU model to reject invalid
migration attempts. We also need to change the migration for guarded
storage.
Additional discussions about host-model are still pending but are out
of scope of this patch.
Suggested-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Cornelia Huck <Cornelia Huck <cohuck@redhat.com>
Acked-by: Halil Pasic <pasic@linux.vnet.ibm.com>
For now, e.g. host-s390-cpu wasn't exposed to the user. cpu-add, -cpu
and the CPU model qmp interfaces didn't care about the actual type,
as that information was hidden.
This changed with CPU hotplug via device_add. Now the type is visible to
the user. Before we get that supported in a stable version, this is our
last chance to change it.
So change it from "s390-cpu" to "s390x-cpu", to match the architecture
name. Example names are then e.g. z14-s390x-cpu or qemu-s390x-cpu.
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20171020115803.14093-1-david@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
As we have two guests running, just pass always who we want to send a
message to. Once there, refactor return_or_event() into wait_command.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Instead of repeating the code, we are going to bo more tests on this file
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Right now it is a variable in MigrationState instead of a
MigrationParameter. The change allows to set it as the rest of the
Migration parameters, from the command line, with
query_migration_paramters, set_migrate_parameters, etc.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
After the previous commits, we make sure that the value passed is
right, or we just drop an error. So now we return if there is one
error or we have setup correctly the value passed.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
--
Improve error messasge
Return 0 always for success
Now that we check that the value passed is a power of 2, we don't need
to play games when comparing what is the size that is going to take
the cache.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Instead of passing silently round down the number of pages, make it an
error that the cache size is not a power of 2.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
* support for network interface stats
* w32: improvements for guest-set-time
* w32: fix a hang with guest-fsfreeze-freeze when timeout occurs
during heavy I/O
* w32: fix faulty error-handling in VSS/fsfreeze COM registration
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Merge remote-tracking branch 'remotes/mdroth/tags/qga-pull-2017-10-26-tag' into staging
qemu-ga patch queue for 2.11
* support for network interface stats
* w32: improvements for guest-set-time
* w32: fix a hang with guest-fsfreeze-freeze when timeout occurs
during heavy I/O
* w32: fix faulty error-handling in VSS/fsfreeze COM registration
# gpg: Signature made Fri 27 Oct 2017 02:11:53 BST
# gpg: using RSA key 0x3353C9CEF108B584
# gpg: Good signature from "Michael Roth <flukshun@gmail.com>"
# gpg: aka "Michael Roth <mdroth@utexas.edu>"
# gpg: aka "Michael Roth <mdroth@linux.vnet.ibm.com>"
# Primary key fingerprint: CEAC C9E1 5534 EBAB B82D 3FA0 3353 C9CE F108 B584
* remotes/mdroth/tags/qga-pull-2017-10-26-tag:
qga-win: fix error-handling in getNameByStringSID()
qga: add network stats to guest-network-get-interfaces
qga-win: Updating guest_set_time action
qga-win: don't hang if vss hold writes timeout
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Xen vIOMMU device model will be in Xen hypervisor. Skip vIOMMU
check for Xen here when vcpu number is more than 255.
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Message-Id: <1502842933-8323-1-git-send-email-tianyu.lan@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
numa 'mem' option with suffix or without one is possible
only on CLI/HMP. Instead of fixing up special suffix less
CLI case deep in parse_numa_node() do it earlier right
after option is parsed into NumaNodeOptions with OptVisistor
so that the rest of the code would use valid values in
NumaNodeOptions and won't have to reparse QemuOpts.
It will help to isolate CLI/HMP parts in parse_numa() and
split out parsed NumaNodeOptions processing into separate
function that could be reused by QMP handler where we have
only NumaNodeOptions and don't need any fixups.
While at it reuse qemu_strtosz_MiB() instead of manually
checking for suffixes.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1507801198-98182-1-git-send-email-imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
object_initialize() is intended for inplace initialization of
objects, but here it's first allocated with g_new0() and then
initialized with object_initialize(). QEMU already has API
to do this (object_new), so do object creation with suitable
for usecase API.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-36-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
introduce SPARC_CPU_TYPE_NAME macro and use it to
construct cpu type names.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-32-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
introduce TRICORE_CPU_TYPE_NAME macro and use it to construct
cpu type names. While at it move cpu type_infos into one
array and register it directly with type_init_from_array()
instead of custom tricore_cpu_register_types()/cpu_register()
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-30-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
use new UNICORE32_CPU_TYPE_NAME to compose CPU type
name and get rid of intermediate
UniCore32CPUInfo/uc32_cpu_register_types()
which is replaced by static TypeInfo array and
type_init_from_array()
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-28-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
use new XTENSA_CPU_TYPE_NAME to compose CPU type name
to bring xtensa in line with all other targets that
will similar macro.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-25-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
the field contains upper-cased cpu model name and is used
for printing supported cpu model names for '-cpu help'.
Considering that cpu model lookup in superh_cpu_class_by_name()
is case-insensitive, we can drop upper-casing when
printing supported cpus list and use cpu type directly
to do the same by cutting out SUPERH_CPU_TYPE_SUFFIX from
typename.
It allows to remove SuperHCPUClass::name, which practically
duplicates names defined by TYPE_SH*_CPU definitions and
simplify sh*_class_init()/SuperHCPUClass a bit.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-24-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
currently for sh4 cpu_model argument for '-cpu' option
could be either 'cpu model' name or cpu_typename.
however typically '-cpu' takes 'cpu model' name and
cpu type for sh4 target isn't advertised publicly
('-cpu help' prints only 'cpu model' names) so we
shouldn't care about this use case (it's more of a bug).
1. Drop '-cpu cpu_typename' to align with the rest of
targets.
2. Compose searched for typename from cpu model and use
it with object_class_by_name() directly instead of
over-complicated
object_class_get_list()
g_slist_find_custom() + superh_cpu_name_compare()
With #1 droped, #2 could be used for both lookups which
simplifies superh_cpu_class_by_name() quite a bit.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1507211474-188400-23-git-send-email-imammedo@redhat.com>
[ehabkost: Include fixup sent by Igor]
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
