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Re: [libvirt] [PATCH 0/5 v2] Improve Ceph Qemu+RBD support



Hi everyone,

Any feedback on this series?  I touch a few pieces outside of the RBD bits 
here...

Thanks!
sage


On Mon, 19 Sep 2011, Sage Weil wrote:

> The current support for qemu and Ceph RBD (rados block device) has two 
> main deficiencies: authentication doesn't work, and it relies on 
> environment variables (which don't work with latest upstream). This 
> patch set addresses both those problems.
> 
> The first two patches update the xml schemas and conf to add a Ceph 
> secret type and to specify authentication information along with the rbd 
> disk.
> 
> The next two patches make some libvirt changes.  We pass virConnectPtr 
> down into the Domain{Attach,Detach} methods (needed to access secrets 
> while building the qemu command), and add a helper that will escape 
> arbitrary characters.
> 
> The final patch replaces the current RBD qemu code and uses the new conf 
> info to do authentication properly.  (We still need to make a change 
> there to avoid having the authentication key show up on qemu command 
> line; I'll clean that up shortly.)
> 
> Comments on this approach?
> 
> Thanks!
> sage
> 
> 
> Changes from v1:
>   update docs/schemas/{domain,secret}.rng
> 
> Sage Weil (5):
>   secret: add Ceph secret type
>   storage: add authId, authDomain to virDomainDiskDef
>   qemu: pass virConnectPtr into Domain{Attach,Detach}*
>   buf: implement generic virBufferEscape
>   qemu/rbd: improve rbd device specification
> 
>  docs/schemas/domain.rng                            |    6 +
>  docs/schemas/secret.rng                            |   17 ++
>  include/libvirt/libvirt.h.in                       |    3 +
>  src/conf/domain_conf.c                             |   43 +++-
>  src/conf/domain_conf.h                             |    2 +
>  src/conf/secret_conf.c                             |   45 ++++-
>  src/conf/secret_conf.h                             |    1 +
>  src/libvirt_private.syms                           |    1 +
>  src/qemu/qemu_command.c                            |  273 +++++++++++---------
>  src/qemu/qemu_command.h                            |    3 +-
>  src/qemu/qemu_driver.c                             |   17 +-
>  src/qemu/qemu_hotplug.c                            |   15 +-
>  src/qemu/qemu_hotplug.h                            |    9 +-
>  src/secret/secret_driver.c                         |    8 +
>  src/util/buf.c                                     |   33 ++-
>  src/util/buf.h                                     |    1 +
>  .../qemuxml2argv-disk-drive-network-rbd.args       |    6 +-
>  .../qemuxml2argv-disk-drive-network-rbd.xml        |    1 +
>  18 files changed, 328 insertions(+), 156 deletions(-)
> 
> -- 
> 1.7.4.1
> 
> >From 498cd06b76bbb4415a2f81f9d169f267ff99329c Mon Sep 17 00:00:00 2001
> From: Sage Weil <sage newdream net>
> Date: Thu, 15 Sep 2011 13:47:40 -0700
> Subject: [PATCH 0/5] Improve Ceph Qemu+RBD support
> 
> The current support for qemu and Ceph RBD (rados block device) has two 
> main deficiencies: authentication doesn't work, and it relies on 
> environment variables (which don't work with latest upstream).
> 
> This patch set addresses both those problems, while trying to integrate as
> cleanly as possible with the rest of libvirt.
> 
> The first few patches make some changes to libvirt itself: adding a CEPH 
> secret type (for Ceph/RBD authentication), adding authentication fields 
> to the XML schema, passing the virConnectPtr into the 
> Domain{Attach,Detach} methods (needed to access secrets while building 
> the qemu command), a helper that will escape arbitrary characters, and 
> finally a patch that replaces the current RBD qemu code.
> 
> Comments on this approach?
> 
> Thanks!
> sage
> 
> 
> Sage Weil (5):
>   secret: add Ceph secret type
>   storage: add authId, authDomain to virDomainDiskDef
>   qemu: pass virConnectPtr into Domain{Attach,Detach}*
>   buf: implement generic virBufferEscape
>   qemu/rbd: improve rbd device specification
> 
>  include/libvirt/libvirt.h.in                       |    3 +
>  src/conf/domain_conf.c                             |   43 +++-
>  src/conf/domain_conf.h                             |    2 +
>  src/conf/secret_conf.c                             |   45 ++++-
>  src/conf/secret_conf.h                             |    1 +
>  src/libvirt_private.syms                           |    1 +
>  src/qemu/qemu_command.c                            |  273 +++++++++++---------
>  src/qemu/qemu_command.h                            |    3 +-
>  src/qemu/qemu_driver.c                             |   17 +-
>  src/qemu/qemu_hotplug.c                            |   15 +-
>  src/qemu/qemu_hotplug.h                            |    9 +-
>  src/secret/secret_driver.c                         |    8 +
>  src/util/buf.c                                     |   33 ++-
>  src/util/buf.h                                     |    1 +
>  .../qemuxml2argv-disk-drive-network-rbd.args       |    6 +-
>  .../qemuxml2argv-disk-drive-network-rbd.xml        |    1 +
>  16 files changed, 305 insertions(+), 156 deletions(-)
> 
> -- 
> 1.7.4.1
> 
> --
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