Re: [PATCH v4 2/7] nbd: Add new qemu:allocation-depth metadata context

2020-10-22 Thread Eric Blake
On 10/14/20 6:52 AM, Vladimir Sementsov-Ogievskiy wrote: >>   docs/interop/nbd.txt | 27 ++--- > > [..] > >> +In the allocation depth context, bits 0 and 1 form a tri-state value: >> + >> +    bits 0-1: 00: NBD_STATE_DEPTH_UNALLOC, the extent is unallocated >> +  01:

Re: [PATCH v4 2/7] nbd: Add new qemu:allocation-depth metadata context

2020-10-14 Thread Vladimir Sementsov-Ogievskiy
10.10.2020 00:55, Eric Blake wrote: 'qemu-img map' provides a way to determine which extents of an image come from the top layer vs. inherited from a backing chain. This is useful information worth exposing over NBD. There is a proposal to add a QMP command block-dirty-bitmap-populate which

[PATCH v4 2/7] nbd: Add new qemu:allocation-depth metadata context

2020-10-09 Thread Eric Blake
'qemu-img map' provides a way to determine which extents of an image come from the top layer vs. inherited from a backing chain. This is useful information worth exposing over NBD. There is a proposal to add a QMP command block-dirty-bitmap-populate which can create a dirty bitmap that reflects