Re: [Qemu-devel] [PATCH RESEND v4] drive-mirror: add incremental mode

2019-03-13 Thread Vladimir Sementsov-Ogievskiy
On 13.03.2019 19:52, John Snow wrote: > > > On 3/12/19 12:32 PM, Vladimir Sementsov-Ogievskiy wrote: >> 12.03.2019 18:58, John Snow wrote: >>> >>> >>> On 3/12/19 9:43 AM, Eric Blake wrote: On 3/12/19 3:19 AM, Vladimir Sementsov-Ogievskiy wrote: >> So one important point about incr

Re: [Qemu-devel] [PATCH RESEND v4] drive-mirror: add incremental mode

2019-03-13 Thread John Snow
On 3/12/19 12:32 PM, Vladimir Sementsov-Ogievskiy wrote: > 12.03.2019 18:58, John Snow wrote: >> >> >> On 3/12/19 9:43 AM, Eric Blake wrote: >>> On 3/12/19 3:19 AM, Vladimir Sementsov-Ogievskiy wrote: >>> > So one important point about incremental backups is that you can > actually do th

Re: [Qemu-devel] [PATCH RESEND v4] drive-mirror: add incremental mode

2019-03-12 Thread Vladimir Sementsov-Ogievskiy
12.03.2019 18:58, John Snow wrote: > > > On 3/12/19 9:43 AM, Eric Blake wrote: >> On 3/12/19 3:19 AM, Vladimir Sementsov-Ogievskiy wrote: >> So one important point about incremental backups is that you can actually do them incrementally: The bitmap is effectively cleared at the beg

Re: [Qemu-devel] [PATCH RESEND v4] drive-mirror: add incremental mode

2019-03-12 Thread John Snow
On 3/12/19 9:43 AM, Eric Blake wrote: > On 3/12/19 3:19 AM, Vladimir Sementsov-Ogievskiy wrote: > >>> So one important point about incremental backups is that you can >>> actually do them incrementally: The bitmap is effectively cleared at the >>> beginning of the backup process (a successor bi

Re: [Qemu-devel] [PATCH RESEND v4] drive-mirror: add incremental mode

2019-03-12 Thread Eric Blake
On 3/12/19 3:19 AM, Vladimir Sementsov-Ogievskiy wrote: >> So one important point about incremental backups is that you can >> actually do them incrementally: The bitmap is effectively cleared at the >> beginning of the backup process (a successor bitmap is installed that is >> cleared and receive

Re: [Qemu-devel] [PATCH RESEND v4] drive-mirror: add incremental mode

2019-03-12 Thread Vladimir Sementsov-Ogievskiy
27.02.2019 18:25, Max Reitz wrote: > CC-ing John because of the keyword "incremental". > > On 14.02.19 07:43, mahaocong wrote: >> From: mahaocong >> >> This patch adds possibility to start mirroring with user-created-bitmap. >> On full mode, mirror create a non-named-bitmap by scanning whole bloc

Re: [Qemu-devel] [PATCH RESEND v4] drive-mirror: add incremental mode

2019-02-28 Thread 滴滴云
> CC-ing John because of the keyword "incremental". Ok > >On 14.02.19 07:43, mahaocong wrote: >> From: mahaocong >> >> This patch adds possibility to start mirroring with user-created-bitmap. >> On full mode, mirror create a non-named-bitmap by scanning whole block- >> chain, and on top mode, mirr

Re: [Qemu-devel] [PATCH RESEND v4] drive-mirror: add incremental mode

2019-02-27 Thread Max Reitz
CC-ing John because of the keyword "incremental". On 14.02.19 07:43, mahaocong wrote: > From: mahaocong > > This patch adds possibility to start mirroring with user-created-bitmap. > On full mode, mirror create a non-named-bitmap by scanning whole block-chain, > and on top mode, mirror create a

[Qemu-devel] [PATCH RESEND v4] drive-mirror: add incremental mode

2019-02-13 Thread mahaocong
From: mahaocong This patch adds possibility to start mirroring with user-created-bitmap. On full mode, mirror create a non-named-bitmap by scanning whole block-chain, and on top mode, mirror create a bitmap by scanning the top block layer. So I think I can copy a user-created-bitmap and use it as