[linux-lvm] LVM send/receive support?

[linux-lvm] LVM send/receive support?

[Gionatan Danti]

Hi all,
I wonder if using LVM snapshots (even better: lvmthin snapshots, which 
are way faster) we can wire something like zfs or btrfs send/receive 
support.

In short: take a snapshot, do a full sync, take another snapshot and 
sync only the changed blocks.

I know that exists an utility called lvmsync[1], but it seem not 
maintained anymore. Any suggestion on how to do something similar?

Thanks.

[1] https://github.com/mpalmer/lvmsync

-- 
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
email: g.danti@assyoma.it - info@assyoma.it
GPG public key ID: FF5F32A8

Re: [linux-lvm] LVM send/receive support?

[Zdenek Kabelac]

Dne 5.6.2017 v 10:11 Gionatan Danti napsal(a):
> Hi all,
> I wonder if using LVM snapshots (even better: lvmthin snapshots, which are way 
> faster) we can wire something like zfs or btrfs send/receive support.
> 
> In short: take a snapshot, do a full sync, take another snapshot and sync only 
> the changed blocks.
> 
> I know that exists an utility called lvmsync[1], but it seem not maintained 
> anymore. Any suggestion on how to do something similar?


Hi

Unfortunately there is not yet direct lvm2 support - but you can do it 
manually via  thin-pool and it support tools.

Look at the tool  'thin_delta'  which you can use exactly for the purpose you 
describe.

Regards

Zdenek

Re: [linux-lvm] LVM send/receive support?

[Gionatan Danti]

Hi Zdenek,
thanks for pointing me to thin_delta - very useful utility. Maybe I can 
code around it...

As an additional question, is direct lvm2 support for send/receive 
planned, or not?

Thanks.

On 05/06/2017 10:44, Zdenek Kabelac wrote:
> Dne 5.6.2017 v 10:11 Gionatan Danti napsal(a):
>> Hi all,
>> I wonder if using LVM snapshots (even better: lvmthin snapshots, which 
>> are way faster) we can wire something like zfs or btrfs send/receive 
>> support.
>>
>> In short: take a snapshot, do a full sync, take another snapshot and 
>> sync only the changed blocks.
>>
>> I know that exists an utility called lvmsync[1], but it seem not 
>> maintained anymore. Any suggestion on how to do something similar?
> 
> 
> Hi
> 
> Unfortunately there is not yet direct lvm2 support - but you can do it 
> manually via  thin-pool and it support tools.
> 
> Look at the tool  'thin_delta'  which you can use exactly for the 
> purpose you describe.
> 
> Regards
> 
> Zdenek
> 

-- 
Danti Gionatan
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
email: g.danti@assyoma.it - info@assyoma.it
GPG public key ID: FF5F32A8

Re: [linux-lvm] LVM send/receive support?

[Zdenek Kabelac]

Dne 5.6.2017 v 10:48 Gionatan Danti napsal(a):
> Hi Zdenek,
> thanks for pointing me to thin_delta - very useful utility. Maybe I can code 
> around it...
> 
> As an additional question, is direct lvm2 support for send/receive planned, or 
> not?

Hi

It will certainly happen - just not sure in which year...
ATM higher prio tasks are on the table.


Regards

Zdenek