Re: [Qemu-devel] [PATCH v5 03/11] blockdev: n-ary bitmap merge

2018-12-20 Thread John Snow
On 12/19/18 9:48 PM, Eric Blake wrote: > On 12/19/18 8:29 PM, John Snow wrote: >> Especially outside of transactions, it is helpful to provide >> all-or-nothing semantics for bitmap merges. This facilitates >> the coalescing of multiple bitmaps into a single target for >> the "checkpoint" interp

Re: [Qemu-devel] [PATCH v5 03/11] blockdev: n-ary bitmap merge

2018-12-20 Thread Vladimir Sementsov-Ogievskiy
20.12.2018 5:29, John Snow wrote: > Especially outside of transactions, it is helpful to provide > all-or-nothing semantics for bitmap merges. This facilitates > the coalescing of multiple bitmaps into a single target for > the "checkpoint" interpretation when assembling bitmaps that > represent ar

Re: [Qemu-devel] [PATCH v5 03/11] blockdev: n-ary bitmap merge

2018-12-19 Thread Eric Blake
On 12/19/18 8:29 PM, John Snow wrote: Especially outside of transactions, it is helpful to provide all-or-nothing semantics for bitmap merges. This facilitates the coalescing of multiple bitmaps into a single target for the "checkpoint" interpretation when assembling bitmaps that represent arbitr

[Qemu-devel] [PATCH v5 03/11] blockdev: n-ary bitmap merge

2018-12-19 Thread John Snow
Especially outside of transactions, it is helpful to provide all-or-nothing semantics for bitmap merges. This facilitates the coalescing of multiple bitmaps into a single target for the "checkpoint" interpretation when assembling bitmaps that represent arbitrary points in time from component bitmap