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We want some testsuite coverage of handling non-1 .can_flush values. The only in-tree plugin with this property is nbd-standalone, but it doesn't get frequently tested, not to mention that the next patch will change it to work with older nbdkit. Signed-off-by: Eric Blake <eblake@redhat.com> --- work in progress: currently compiles but...

I have only verified the fix on Debian 7. The Debian 6 guest doesn't appear to boot, I'm not sure why. The second patch contains a test suite. Rich.

...ing a for-loop of user-controlled depth for how deep you want to nest the forwarding tree, to see where the bottlenecks like in trying to improve nbdkit performance. Eric Blake (2): tests: Prepare for running multiple nbdkits in one test tests: Test nbd forwarder plugin .gitignore | 1 + tests/Makefile.am | 8 ++++ tests/test-nbd.c | 119 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/test.c | 118 +++++++++++++++++++++++++++++++++++------------------ tests/test.h | 4 +- 5 files changed, 209 insertions(+), 41 deletions(-) create mode 100644 tests/t...

...9;s informative and searchable. * Remove references to the non-libnbd plugin. * Headings for examples. * Correct reference to qemu-nbd(8) man page. * General copy-editing to improve readability. * Change style in places so it matches other manual pages. --- plugins/nbd/nbdkit-nbd-plugin.pod | 192 +++++++++++++++++------------- 1 file changed, 109 insertions(+), 83 deletions(-) diff --git a/plugins/nbd/nbdkit-nbd-plugin.pod b/plugins/nbd/nbdkit-nbd-plugin.pod index 618058ac..5653703f 100644 --- a/plugins/nbd/nbdkit-nbd-plugin.pod +++ b/plugins/nbd/nbdkit-nbd-plugin.pod @@ -1,109 +1,119 @...

...9;s informative and searchable. * Remove references to the non-libnbd plugin. * Headings for examples. * Correct reference to qemu-nbd(8) man page. * General copy-editing to improve readability. * Change style in places so it matches other manual pages. --- plugins/nbd/nbdkit-nbd-plugin.pod | 192 +++++++++++++++++------------- 1 file changed, 109 insertions(+), 83 deletions(-) diff --git a/plugins/nbd/nbdkit-nbd-plugin.pod b/plugins/nbd/nbdkit-nbd-plugin.pod index 618058ac..5653703f 100644 --- a/plugins/nbd/nbdkit-nbd-plugin.pod +++ b/plugins/nbd/nbdkit-nbd-plugin.pod @@ -1,109 +1,119 @...

...changes from v3: - drop already merged or rejected patches - revert incorrect keep_serial_console treatment - stylistic fixes - doc and test patches remain untouched changes from v2: - top-down arrangement of function defitinions - branching of scenarios using a dedicated type changes from v1: - include refactoring patches before the --in-place ones - split --in-place patches into code, doc, and test for easier review (bisectability maintained) v2v/Makefile.am | 1 + v2v/cmdline.ml | 7 ++- v2v/test-v2v-in-place.sh | 119 ++++++++++++++++++++++++++++++++++++...

I fixed the deadlock - turned out to be an actual bug in the nbd plugin (see patch 8). I changed the command syntax so it's now: nbdkit nbd command=qemu arg=-f arg=qcow2 arg=/path/to/disk.qcow2 Nir wrote: 18:08 < nsoffer> rwmjones: regarding the nbd proxy patches, did you have specific flow that help us? 18:08 < nsoffer> rwmjones: or this is just a way to support qcow2 in the nbdkit pipeline? A bit of both - it's nice if nbdkit can "open" qcow2 files. Rich.

--- .gitignore | 3 + README | 4 +- TODO | 13 +++ configure.ac | 12 +++ docs/nbdkit-plugin.pod | 6 +- docs/nbdkit.pod | 1 + plugins/rust/Cargo.toml.in | 14 +++ plugins/rust/Makefile.am | 65 ++++++++++++ plugins/rust/examples/ramdisk.rs | 119 ++++++++++...

This adds very rough support for writing nbdkit plugins in Rust. This is not very idiomatic -- essentially we're handling the direct C calls from nbdkit in Rust. We have to use ‘unsafe’ in a few places because there's no way to tell the Rust code that nbdkit satisfies guarantees (eg. around thread safety, always returning leaked pointers back to the close function, always doing bounds

Either patch 1 or patch 2 in isolation is sufficient to fix the problem that Rich forwarded on from an archlinux tester (name so I can credit them?). But both patches should be applied, as well as backported to appropriate stable branches, to maximize cross-version interoperability of nbdkit vs. plugins. Patch...

...for tuning virtio ring layouts. Three layouts are currently implemented: - virtio 0.9 compatible one - an experimental extension bypassing the ring index, polling ring itself instead - an experimental extension bypassing avail and used ring completely Typical use: sh run-on-all.sh perf stat -r 10 --log-fd 1 -- ./ring It doesn't depend on the kernel directly, but it's handy to have as much virtio stuff as possible in one tree. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- I have this in my tree at the moment. As this is completely standalone, I think it's r...

...for tuning virtio ring layouts. Three layouts are currently implemented: - virtio 0.9 compatible one - an experimental extension bypassing the ring index, polling ring itself instead - an experimental extension bypassing avail and used ring completely Typical use: sh run-on-all.sh perf stat -r 10 --log-fd 1 -- ./ring It doesn't depend on the kernel directly, but it's handy to have as much virtio stuff as possible in one tree. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- I have this in my tree at the moment. As this is completely standalone, I think it's r...

...2 +- com32/chain/chain.c | 4 +- com32/chain/mangle.c | 4 +- com32/chain/mangle.h | 2 +- com32/chain/options.c | 4 +- com32/chain/partiter.c | 726 -------------------------------------- com32/chain/partiter.h | 119 ------- com32/chain/utility.c | 256 -------------- com32/chain/utility.h | 75 ---- com32/include/syslinux/partiter.h | 119 +++++++ com32/include/syslinux/utility.h | 76 ++++ com32/lib/syslinux/partiter.c | 726 ++++++++++++++++++++++++++++++++++++++ com32/lib/s...

...et's kvm kernel module to IBM zSeries (aka s390x, mainframe) architecture. It uses the mainframe's virtualization instruction SIE to run virtual machines with up to 64 virtual CPUs each. This port is only usable on 64bit host kernels, and can only run 64bit guest kernels. However, running 31bit applications in guest userspace is possible. The following source files are introduced by this patch arch/s390/kvm/kvm-s390.c similar to arch/x86/kvm/x86.c, this implements all arch callbacks for kvm. __vcpu_run calls back into sie64a t...

...et's kvm kernel module to IBM zSeries (aka s390x, mainframe) architecture. It uses the mainframe's virtualization instruction SIE to run virtual machines with up to 64 virtual CPUs each. This port is only usable on 64bit host kernels, and can only run 64bit guest kernels. However, running 31bit applications in guest userspace is possible. The following source files are introduced by this patch arch/s390/kvm/kvm-s390.c similar to arch/x86/kvm/x86.c, this implements all arch callbacks for kvm. __vcpu_run calls back into sie64a t...

The first four patches are fairly routine clean up and can be reviewed/applied on their own. The fifth patch is problematic as described below. At the moment if you want to proxy through to qemu-nbd (eg. for handling qcow2 files) it's rather complicated and you end up having to manage the sockets and clean up yourself. However the library we use for the proxying supports a perfectly good

On Tue, Apr 21, 2020 at 05:07:43PM +0100, Daniel P. Berrangé wrote: > On Tue, Apr 21, 2020 at 11:44:59AM +0100, Richard W.M. Jones wrote: > > Thanks: Dan Berrangé > > > > XXX UNFINISHED: > > > > - Is using uintptr for the handle a good idea? Plugins must return > > so...

...uild the appliance rpm, after which it is installed provides the /usr/sbin/ovirt-appliance-ctrl script to install/uninstall the appliance. The first patch merely removes the current broken implementation, while the second adds the new one. Currently rebooting a working appliance doesn't work 100%, though there are post-reboot steps noted in the code to get things working again until a fix is sent.

....../src/libguestfs.org/nbdkit/nbdkit.go | 224 ++++++++++++++++++ .../golang/src/libguestfs.org/nbdkit/utils.go | 75 ++++++ .../src/libguestfs.org/nbdkit/wrappers.go | 88 +++++++ plugins/golang/test/run-test.sh | 42 ++++ plugins/golang/test/test.go | 102 ++++++++ .gitignore | 2 + README | 4 + 12 files changed, 760 insertions(+) diff --git a/plugins/golang/nbdkit-golang-plugin.pod b/plugins/golang/nbdkit-golang-plugin.pod new file mode 100644 index 00000000..b449a830...

This feature is roughly finished now, although it needs a few more tests and some examples. It's pretty much up to par with all the other bindings, but it lacks a completely safe AIO buffer. It won't stop you from freeing the buffer too early) because golang's GC inexplicably lacks a way to declare a root from C. I can probably do it with a global variable and ref counting on the