[Ocfs2-devel] how to restore a reflink ?

[Ocfs2-devel] how to restore a reflink ?

[Lentes, Bernd via Ocfs2-devel]

[-- Attachment #1.1: Type: text/plain, Size: 1752 bytes --]

Hi,

i have some Virtual machines running on an OCFS2 volume. 
That means that their disk images reside on an OCFS2 volume.
I needed to change something inside one vm and created a relink of it before.
What i wanted to change went wrong. I need the reflink.

I have vm.raw and vm_before_configure.raw.
vm_before_configure.raw is my reflink.
The files are quite big: 280 GB.

My planned procedure is:
Stop Virtual machine.
Copy vm_before_configure.raw somewhere else to vm_before_configure.raw.bak.
Delete or rename vm.raw
Rename vm_before_config.raw.bak to vm.raw
Start the VM again.
Hopefully be happy.

Is that ok ?

Bernd
-- 

Bernd Lentes 
System Administrator 
Institute for Metabolism and Cell Death (MCD) 
Building 25 - office 122 
HelmholtzZentrum München 
bernd.lentes@helmholtz-muenchen.de 
phone: +49 89 3187 1241 
fax: +49 89 3187 2294 
http://www.helmholtz-muenchen.de/mcd 


Public key: 

30 82 01 0a 02 82 01 01 00 b3 72 3e ce 2c 0a 6f 58 49 2c 92 23 c7 b9 c1 ff 6c 3a 53 be f7 9e e9 24 b7 49 fa 3c e8 de 28 85 2c d3 ed f7 70 03 3f 4d 82 fc cc 96 4f 18 27 1f df 25 b3 13 00 db 4b 1d ec 7f 1b cf f9 cd e8 5b 1f 11 b3 a7 48 f8 c8 37 ed 41 ff 18 9f d7 83 51 a9 bd 86 c2 32 b3 d6 2d 77 ff 32 83 92 67 9e ae ae 9c 99 ce 42 27 6f bf d8 c2 a1 54 fd 2b 6b 12 65 0e 8a 79 56 be 53 89 70 51 02 6a eb 76 b8 92 25 2d 88 aa 57 08 42 ef 57 fb fe 00 71 8e 90 ef b2 e3 22 f3 34 4f 7b f1 c4 b1 7c 2f 1d 6f bd c8 a6 a1 1f 25 f3 e4 4b 6a 23 d3 d2 fa 27 ae 97 80 a3 f0 5a c4 50 4a 45 e3 45 4d 82 9f 8b 87 90 d0 f9 92 2d a7 d2 67 53 e6 ae 1e 72 3e e9 e0 c9 d3 1c 23 e0 75 78 4a 45 60 94 f8 e3 03 0b 09 85 08 d0 6c f3 ff ce fa 50 25 d9 da 81 7b 2a dc 9e 28 8b 83 04 b4 0a 9f 37 b8 ac 58 f1 38 43 0e 72 af 02 03 01 00 01

[-- Attachment #1.2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 2217 bytes --]

[-- Attachment #2: Type: text/plain, Size: 151 bytes --]

_______________________________________________
Ocfs2-devel mailing list
Ocfs2-devel@oss.oracle.com
https://oss.oracle.com/mailman/listinfo/ocfs2-devel

Re: [Ocfs2-devel] how to restore a reflink ?

[Joseph Qi via Ocfs2-devel]

On 6/10/22 3:18 AM, Lentes, Bernd via Ocfs2-devel wrote:
> Hi,
> 
> i have some Virtual machines running on an OCFS2 volume. 
> That means that their disk images reside on an OCFS2 volume.
> I needed to change something inside one vm and created a relink of it before.
> What i wanted to change went wrong. I need the reflink.
> 
> I have vm.raw and vm_before_configure.raw.
> vm_before_configure.raw is my reflink.

As the name hints, it seems vm_before_configure.raw is the source image
(good), while vm.raw is the dest reflink image (bad)?

If it is, discard the existing reflink vm.raw (better backup first), and
redo a new reflink vm.raw from vm_before_configure.raw will save much
time since your image is very big.

Thanks,
Joseph

> The files are quite big: 280 GB.
> 
> My planned procedure is:
> Stop Virtual machine.
> Copy vm_before_configure.raw somewhere else to vm_before_configure.raw.bak.
> Delete or rename vm.raw
> Rename vm_before_config.raw.bak to vm.raw
> Start the VM again.
> Hopefully be happy.
> 
> Is that ok ?
> 
> Bernd

_______________________________________________
Ocfs2-devel mailing list
Ocfs2-devel@oss.oracle.com
https://oss.oracle.com/mailman/listinfo/ocfs2-devel