Re: [Qemu-devel] mirror questions

2019-02-26 Thread Vladimir Sementsov-Ogievskiy
26.02.2019 12:28, Kevin Wolf wrote: > Am 26.02.2019 um 09:48 hat Vladimir Sementsov-Ogievskiy geschrieben: >> Hi! >> >> A question about s->cow_bitmap, introduced in far b812f6719c >> "mirror: perform COW if the cluster size is bigger than the >> granularity" >> >> cow_bitmap is just a bitma

Re: [Qemu-devel] mirror questions

2019-02-26 Thread Kevin Wolf
Am 26.02.2019 um 09:48 hat Vladimir Sementsov-Ogievskiy geschrieben: > Hi! > > A question about s->cow_bitmap, introduced in far b812f6719c > "mirror: perform COW if the cluster size is bigger than the granularity" > > cow_bitmap is just a bitmap which tracks, what clusters of target are >

[Qemu-devel] mirror questions

2019-02-26 Thread Vladimir Sementsov-Ogievskiy
Hi! A question about s->cow_bitmap, introduced in far b812f6719c "mirror: perform COW if the cluster size is bigger than the granularity" cow_bitmap is just a bitmap which tracks, what clusters of target are allocated, to prevent COW in target, if target backing is not ready yet. And it is