Re: [pve-devel] [PATCH v2 storage 05/10] rbd plugin: implement volume import/export

["DERUMIER, Alexandre via pve-devel" <pve-devel@lists.proxmox.com>]

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From: "DERUMIER, Alexandre" <alexandre.derumier@groupe-cyllene.com>
To: "pve-devel@lists.proxmox.com" <pve-devel@lists.proxmox.com>, "d.kral@proxmox.com" <d.kral@proxmox.com>
Subject: Re: [pve-devel] [PATCH v2 storage 05/10] rbd plugin: implement volume import/export
Date: Wed, 18 Dec 2024 15:33:46 +0000
Message-ID: <15b28f8ffe3292817c5171ab8e683b0d8f446dfe.camel@groupe-cyllene.com>

>>Am 18.12.24 um 15:20 schrieb Daniel Kral:
> >>- When exporting with "pvesm export ...", the volume has the same
> checksum as with "rbd export ..." with the size header prepended

>>Well, I totally missed the existence of "rbd export" in my hurry to
>>get
>>this working. Seems to be about 1.5 times faster than mapping+dd from
>>some initial testing. Will use that in v3.

Hi, fiona, rbd export|import, this is the way, like zfs send|receive. 
(with snapshot support too, with export-diff|import-diff)

I't really fast because, if I remember, it's use big block size and is 
able to do parallelism. (can be tunned with --rbd-concurrent-
management-ops <number> )



No related, but could it be possible to implement it, for simple
vm/template full cloning with source+target are both rbd ? It's really
faster with 'qemu-img convert'





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