[Xen-devel] [PATCH 2/3] SUPPORT.md: Specify support for various image formats

[George Dunlap <george.dunlap@xxxxxxxxxx>]

QEMU supports various image formats, but we only provide security
support for raw, qcow, qcow2, and vhd formats.

Rather than duplicate this information under the "x86/Emulated
storage" section, just refer to the "Blkback" section.

Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
---
This is a candidate for backport to 4.10.

Other option I explored was giving each format its own entry, like
this:

#### Image format: Raw

    Status, Linux (xen-blkback): Supported
    Status, QEMU (xen_disk): Supported
    Status, FreeBSD (blkback): Supported, Security support external
    Status, NetBSD (xbdback): Supported, security support external
    Status, Blktap2: Deprecated

But that led to a lot of duplication (Everything is listed as
"supported" once under "Blkback", and once under "Image format: Raw").

CC: Ian Jackson <ian.jackson@xxxxxxxxxx>
CC: Wei Liu <wei.liu2@xxxxxxxxxx>
CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CC: Jan Beulich <jbeulich@xxxxxxxx>
CC: Tim Deegan <tim@xxxxxxx>
CC: Konrad Wilk <konrad.wilk@xxxxxxxxxx>
CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
CC: Julien Grall <julien.grall@xxxxxxx>
CC: Roger Pau Monne <roger.pau@xxxxxxxxxx>
CC: Anthony Perard <anthony.perard@xxxxxxxxxx>
CC: Lars Kurth <lars.kurth@xxxxxxxxxx>
---
 SUPPORT.md | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/SUPPORT.md b/SUPPORT.md
index 87d07129b4..ee65d45b24 100644
--- a/SUPPORT.md
+++ b/SUPPORT.md
@@ -421,12 +421,17 @@ unless otherwise noted.
 ### Blkback
 
     Status, Linux (xen-blkback): Supported
-    Status, QEMU (xen_disk): Supported
+    Status, QEMU (xen_disk), raw format: Supported
+    Status, QEMU (xen_disk), qcow format: Supported
+    Status, QEMU (xen_disk), qcow2 format: Supported
+    Status, QEMU (xen_disk), vhd format: Supported
     Status, FreeBSD (blkback): Supported, Security support external
     Status, NetBSD (xbdback): Supported, security support external
-    Status, Blktap2: Deprecated
+    Status, Blktap2, raw format: Deprecated
+    Status, Blktap2, vhd format: Deprecated
 
-Host-side implementations of the Xen PV block protocol
+Host-side implementations of the Xen PV block protocol.
+Backends only support raw format unless otherwise specified.
 
 ### Netback
 
@@ -634,6 +639,8 @@ Note that other devices are available but not security 
supported.
 
     Status, piix3 ide: Supported
     Status, ahci: Supported
+       
+See the section **Blkback** for image formats supported by QEMU.
 
 ### x86/Emulated graphics (QEMU):
 
-- 
2.16.2


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel