Expose the new power of virDomainBlockCopy through virsh (well,
all but the finer-grained bandwidth, as that is its own can of
worms for a later patch).  Continue to use the older API where
possible, for maximum compatibility.

The command now requires either --dest (with optional --format
and --blockdev), to directly describe the file destination, or
--xml, to name a file that contains an XML description such as:

<disk type='network'>
  <driver type='raw'/>
  <source protocol='gluster' name='vol1/img'>
    <host name='red'/>
  </source>
</disk>

[well, it may be a while before the qemu driver is actually patched
to act on that particular xml beyond just parsing it, but the virsh
interface won't need changing at that time]

Non-zero option parameters are converted into virTypedParameters,
and if anything requires the new API, the command can synthesize
appropriate XML even if the --dest option was used instead of --xml.

The existing --raw flag remains for back-compat, but the preferred
spelling is now --format=raw, since the new API now allows us
to specify all formats rather than just a boolean raw to suppress
probing.

I hope I did justice in describing the effects of granularity and
buf-size on how they get passed through to qemu.

* tools/virsh-domain.c (cmdBlockCopy): Add new options --xml,
--granularity, --buf-size, --format. Make --raw an alias for
--format=raw. Call new API if new parameters are in use.
* tools/virsh.pod (blockcopy): Document new options.
Signed-off-by: NEric Blake <eblake@redhat.com>

To date, anyone performing a block copy and pivot ends up with
the destination being treated as <disk type='file'>.  While this
works for data access for a block device, it has at least one
noticeable shortcoming: virDomainGetBlockInfo() reports allocation
differently for block devices visited as files (the size of the
device) than for block devices visited as <disk type='block'>
(the maximum sector used, as reported by qemu); and this difference
is significant when trying to manage qcow2 format on block devices
that can be grown as needed.

Of course, the more powerful virDomainBlockCopy() API can already
express the ability to set the <disk> type.  But a new API can't
be backported, while a new flag to an existing API can; and it is
also rather inconvenient to have to resort to the full power of
generating XML when just adding a flag to the older call will do
the trick.  So this patch enhances blockcopy to let the user flag
when the resulting XML after the copy must list the device as
type='block'.

* include/libvirt/libvirt.h.in (VIR_DOMAIN_BLOCK_REBASE_COPY_DEV):
New flag.
* src/libvirt.c (virDomainBlockRebase): Document it.
* tools/virsh-domain.c (opts_block_copy, blockJobImpl): Add
--blockdev option.
* tools/virsh.pod (blockcopy): Document it.
* src/qemu/qemu_driver.c (qemuDomainBlockRebase): Allow new flag.
(qemuDomainBlockCopy): Remember the flag, and make sure it is only
used on actual block devices.
* tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml: Test it.
Signed-off-by: NEric Blake <eblake@redhat.com>

Expose the new flag just added to virDomainGetBlockJobInfo.
With --raw, the presence or absence of --bytes determines which
flag to use in the single API call.  Without --raw, the use of
--bytes forces an error if the server doesn't support it,
otherwise, the code tries to silently fall back to scaling the
MiB/s value.

My goal is to eventually also support --bytes in bandwidth mode;
but that's a bit further down the road (and needs a new API flag
added in libvirt.h first).

This changes the human output, but the previous patch added
raw output precisely so that we can have flexibility with the
human output.  For this commit, I used qemu-monitor-command to
force an unusual bandwidth, but the same will be possible once
qemu implements virDomainBlockCopy:

Before:
Block Copy: [100 %]    Bandwidth limit: 2 MiB/s
After:
Block Copy: [100 %]    Bandwidth limit: 1048577 bytes/s (1.000 MiB/s)

The cache avoids having to repeatedly checking whether the flag
works when talking to an older server, when multiple blockjob
commands are issued during a batch session and the user is
manually polling for job completion.

* tools/virsh.h (_vshControl): Add a cache.
* tools/virsh.c (cmdConnect, vshReconnect): Initialize the cache.
* tools/virsh-domain.c (opts_block_job): Add --bytes.
* tools/virsh.pod (blockjob): Document this.
Signed-off-by: NEric Blake <eblake@redhat.com>

The current output of 'blockjob [--info]' is a single line
designed for human consumption; it's not very nice for machine
parsing.  Furthermore, I have plans to modify the line in
response to the new flag for controlling bandwidth units.
Solve that by adding a --raw parameter, which outputs
information closer to the C struct.

$ virsh blockjob testvm1 vda --raw
 type=Block Copy
 bandwidth=1
 cur=197120
 end=197120

The information is indented, because I'd like for a later patch
to add a mode that iterates over all the vm's disks with status
for each; in that mode, each block name would be listed unindented
before information (if any) about that block.

Now that we have a raw mode, we can guarantee that it won't change
format over time.  Any app that cares about parsing the output can
try --raw, and if it fails, know that it was talking to an older
virsh and fall back to parsing the human-readable format which had
not changed until now; meanwhile, when not using --raw, we have
freed future virsh to change the output to whatever makes sense.

My first change to human mode: this command now guarantees a line
is printed on successful use of the API, even when the API did
not find a current block job (consistent with the rest of virsh).

Bonus: https://bugzilla.redhat.com/show_bug.cgi?id=1135441
complained that this message was confusing:

$ virsh blockjob test1 hda  --async --bandwidth 10
error: conflict between --abort, --info, and --bandwidth modes

even though the man page already documents that --async implies
abort mode, all because '--abort' wasn't present in the command
line.  Since I'm adding another case where options are tied
to or imply a mode, I changed that error to:

error: conflict between abort, info, and bandwidth modes

* tools/virsh-domain.c (cmdBlockJob): Add --raw parameter; tweak
error wording.
* tools/virsh.pod (blockjob): Document it.
Signed-off-by: NEric Blake <eblake@redhat.com>

Add "domstats" command that excercises both of the new APIs depending if
you specify a domain list or not. The output is printed as a key=value
list of the returned parameters.

Signed-off-by: NLi Yang <liyang.fnst@cn.fujitsu.com>

net-undefine doesn't only undefine an inactive network,
but also an active network(persistent), it just cannot
undefine a transient network.
Signed-off-by: NLi Yang <liyang.fnst@cn.fujitsu.com>
Signed-off-by: NJán Tomko <jtomko@redhat.com>

  * tools/virsh.pod (migrate): Add --auto-converge flag
Signed-off-by: NPradipta Kr. Banerjee <bpradip@in.ibm.com>
Signed-off-by: NJán Tomko <jtomko@redhat.com>

Those two commands work with a single API so cross-link them.

Signed-off-by: NLi Yang <liyang.fnst@cn.fujitsu.com>

Patch adding the command forgot to add the man page entry.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1130379

This tries to address

    https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=688778

were libvirt autodetected vbox:///session and it wasn't listed in the
manpage.

This makes the paragaph about attach-interface more descriptive and
correct, adding in a few bits of information that were previously
missing, e.g. --script is only allowed for bridge interfaces of Xen
domains, target name is regenerated if it starts with vnet, mac
address will be autogenerated if not specified.

(I did this in response to an email asking why a script couldn't be
specified for a bridge interface of a qemu domain, and why an
interface of type='ethernet' couldn't be created with
attach-interface)

https://bugzilla.redhat.com/show_bug.cgi?id=1072653

Upon successful upload of a volume, the target volume and storage pool
were not updated to reflect any changes as a result of the upload. Make
use of the existing stream close callback mechanism to force a backend
pool refresh to occur in a separate thread once the stream closes. The
separate thread should avoid potential deadlocks if the refresh needed
to wait on some event from the event loop which is used to perform
the stream callback.

Commit id '0e2d7305' modified the code to allow a negative value to be
supplied for the bandwidth argument of the various block virsh commands
and the migrate-setspeed; however, it failed to update the man page to
describe the "feature" whereby a very large value could be interpreted
by the hypervisor to mean maximum value allowed. Although initially
designed to handle a -1 value, the reality is just about any negative
value could be provided and essentially perform the same feature.

https://bugzilla.redhat.com/show_bug.cgi?id=1087104

Commit id 'c6212539' explicitly allowed a negative value to be used for
offset and length as a shorthand for the largest value after commit id
'f18c02ec' modified virStrToLong_ui() to essentially disallow a negative
value.

However, allowing a negative value for offset ONLY worked if the negative
value was -1 since the eventual lseek() does allow a -1 to mean the end
of the file.  Providing other negative values resulted in errors such as:

$ virsh vol-download --pool default qcow3-vol2 /home/vm-images/raw \
  --offset -2 --length -1000
error: cannot download from volume qcow3-vol2
error: Unable to seek /home/vm-images/qcow3-vol2 to 18446744073709551614: Invalid argument

$

Thus, it seems unreasonable to expect or allow a negative value for offset
since the only benefit is to lseek() to the end of the file and then only
take advantage of how the OS would handle such a seek. For the purposes of
upload or download of volume data, that seems to be a no-op.  Therefore,
disallow a negative value for offset.

Additionally, modify the man page for vol-upload and vol-download to provide
more details regarding the valid values for both offset and length.

Snapshots and block-copy have a flag that forces qemu to re-use existing
file. Our docs weren't exactly clear on what the existing file should
contain for this to actually work.

Re-word the docs a bit to state that the file needs to be pre-created in
the desired format and the backing chain metadata needs to be set prior
to handing it over to qemu.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1084360

Libvirt generates external snapshot target file names for file backed
storage but not for block backed storage. Document the limitation.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1032363

According to the code, 'virsh numatune' supports integers for
specifying --mode as well as the string definitions "strict",
"interleave", and "preferred".  However, this possibility was not
documented anywhere, so this patch adds it to both the man page and
command help.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1085706Signed-off-by: NMartin Kletzander <mkletzan@redhat.com>

Introduce flag for the block rebase API to allow the rebase operation to
leave the chain relatively addressed. Also adds a virsh switch to enable
this behavior.

Introduce flag for the block commit API to allow the commit operation to
leave the chain relatively addressed. Also adds a virsh switch to enable
this behavior.

The API is exposed under 'domcapabilities' command. Currently, with
the variety of drivers that libvirt supports, none of the command
arguments is obligatory, but all are optional instead.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

By default, the bus type is inferred from the style of the device
name('target' in this command), e.g. a device named 'sda' will
typically be exported using a SCSI bus. Actually, not only SCSI bus,
but USB/SATA bus also use this kind of device name. So add '--bus'
option for attach-disk command to allow user specify the target bus.
Signed-off-by: NYanbing Du <ydu@redhat.com>
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

The new VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE flag for
virConnectCompareCPU can be used to get an error
(VIR_ERR_CPU_INCOMPATIBLE) describing the incompatibility instead of the
usual VIR_CPU_COMPARE_INCOMPATIBLE return code.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

Use virNetworkGetDHCPLeases and virNetworkGetDHCPLeasesForMAC in virsh.

The new feature supports the follwing methods:

1. Retrieve leases info for a given virtual network

2. Retrieve leases info for given network interface

tools/virsh-domain-monitor.c
   * Introduce new command : net-dhcp-leases
     Example Usage: net-dhcp-leases <network> [mac]

   virsh # net-dhcp-leases --network default6
   Expiry Time          MAC address        Protocol  IP address                Hostname        Client ID or DUID
   -------------------------------------------------------------------------------------------------------------------
   2014-06-16 03:40:14  52:54:00:85:90:e2  ipv4      192.168.150.231/24        fedora20-test   01:52:54:00:85:90:e2
   2014-06-16 03:40:17  52:54:00:85:90:e2  ipv6      2001:db8:ca2:2:1::c0/64   fedora20-test   00:04:b1:d8:86:42:e1:6a:aa:cf:d5:86:94:23:6f:94:04:cd
   2014-06-16 03:34:42  52:54:00:e8:73:eb  ipv4      192.168.150.181/24        ubuntu14-vm     -
   2014-06-16 03:34:46  52:54:00:e8:73:eb  ipv6      2001:db8:ca2:2:1::5b/64   -               00:01:00:01:1b:30:c6:aa:52:54:00:e8:73:eb

tools/virsh.pod
   * Document new command

src/internal.h
   * Introduce new macro: EMPTYSTR

The new API is exposed under 'freepages' command.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

Add knobs to virsh to manage a 2-phase active commit of the top
layer, similar to knobs already present on blockcopy.  While this
code will fail until later patches actually implement the new
knobs in the qemu driver, doing it now proves that the API is
usable and also makes it easier for testing the qemu changes as
they are made.

* tools/virsh-domain.c (cmdBlockCommit): Add --active, --pivot,
and --keep-overlay options, modeled after blockcopy.
(blockJobImpl): Support --active flag.
* tools/virsh.pod (blockcommit): Document new flags.
(blockjob): Mention 2-phase commit interaction.
Signed-off-by: NEric Blake <eblake@redhat.com>

s/QEemu/QEMU/g

The version command now takes the --daemon parameter for a while and the
output example was pretty outdated.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1110673

Peter's review of an early version of my addition of active block
commit pointed out some issues that I was copying from the block
copy code; fix them up now before perpetuating them.

For virsh commands that manage a single API call, it's nice to have
a 1:1 mapping of options to flags, so that we can test that
lower-layer software handles flag combinations correctly.  But where
virsh is introducing syntactic sugar to combine multiple API calls
into a single user interface, we might as well make that interface
compact.  That is, we should allow the shorter command-line of
'blockcopy $dom $disk --pivot' without having to explicitly specify
--wait, because this isn't directly a flag passed to a single
underlying API call.

Also, my use of embedded ?: ternaries bordered on unreadable.

* tools/virsh-domain.c (cmdBlockCopy): Make --pivot, --finish,
and --timeout imply --wait. Drop excess ?: operators.
* tools/virsh.pod (blockcopy): Update documentation.
Signed-off-by: NEric Blake <eblake@redhat.com>

the 'migration_host' description may be a bit difficult to
understand for some users, so enhance the manual
Signed-off-by: NChen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: NEric Blake <eblake@redhat.com>

Report CPU affinities / online CPUs in human-readable form when
this flag is present:

Before:
CPU Affinity:   y-yy

After:
CPU Affinity:   0,2-3 (out of 4)

https://bugzilla.redhat.com/show_bug.cgi?id=985980

* tools/virsh.pod (attach-disk): Drop duplicate --config, fix typo
in --sourcetype.
Signed-off-by: NEric Blake <eblake@redhat.com>

These APIs are exposed under new virsh command 'domtime' which both gets
and sets (not at the same time of course :)).
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>

These are exposed under domfsfreeze command and domfsthaw command.
Signed-off-by: NTomoki Sekiyama <tomoki.sekiyama@hds.com>

Add a new flag to virDomain{Reboot,Shutdown}FlagValues to allow
shutting down and rebooting a domain via the Xen paravirt control
interface.

Fixes https://bugzilla.redhat.com/show_bug.cgi?id=1088748

The hotplugged vcpus could fail to show up in the guest if
they were added during boot, see:
https://bugzilla.redhat.com/show_bug.cgi?id=807508

Also change arbitrary to arbitrarily.

Fix minor typos in source comments
Signed-off-by: NEric Blake <eblake@redhat.com>

https://bugzilla.redhat.com/show_bug.cgi?id=1080859

Snapshot type should be no, internal, or external.