Re: [Qemu-block] [PATCH v5 23/42] blockdev: Use CAF in external_snapshot_prepare()

2019-06-14 Thread Vladimir Sementsov-Ogievskiy
14.06.2019 19:20, Max Reitz wrote: > On 14.06.19 17:46, Vladimir Sementsov-Ogievskiy wrote: >> 13.06.2019 1:09, Max Reitz wrote: >>> This allows us to differentiate between filters and nodes with COW >>> backing files: Filters cannot be used as overlays at all (for this >>> function). >>> >>>

Re: [Qemu-block] [PATCH v5 23/42] blockdev: Use CAF in external_snapshot_prepare()

2019-06-14 Thread Max Reitz
On 14.06.19 17:46, Vladimir Sementsov-Ogievskiy wrote: > 13.06.2019 1:09, Max Reitz wrote: >> This allows us to differentiate between filters and nodes with COW >> backing files: Filters cannot be used as overlays at all (for this >> function). >> >> Signed-off-by: Max Reitz > > Overlay created

Re: [Qemu-block] [PATCH v5 23/42] blockdev: Use CAF in external_snapshot_prepare()

2019-06-14 Thread Vladimir Sementsov-Ogievskiy
13.06.2019 1:09, Max Reitz wrote: > This allows us to differentiate between filters and nodes with COW > backing files: Filters cannot be used as overlays at all (for this > function). > > Signed-off-by: Max Reitz Overlay created in snapshot operation assumed to consume following writes and

[Qemu-block] [PATCH v5 23/42] blockdev: Use CAF in external_snapshot_prepare()

2019-06-12 Thread Max Reitz
This allows us to differentiate between filters and nodes with COW backing files: Filters cannot be used as overlays at all (for this function). Signed-off-by: Max Reitz --- blockdev.c | 7 ++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/blockdev.c b/blockdev.c index