# Resume a backup from another computer

**URL:** <https://kopia.discourse.group/t/resume-a-backup-from-another-computer/390>\
**Category:** Support\
**Created:** [April 19, 2021, 5:16pm UTC](https://kopia.discourse.group/t/resume-a-backup-from-another-computer/390 "2021-04-19T17:16:33Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![din](https://avatars.discourse-cdn.com/v4/letter/d/ccd318/32.png) [@din](https://kopia.discourse.group/u/din)\
**Post date:** [April 19, 2021, 5:16pm UTC](https://kopia.discourse.group/t/resume-a-backup-from-another-computer/390/1 "2021-04-19T17:16:33Z")

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Hi,

Is it possible to :

- copy a directory dir1 from system1 to an external hard drive
- “kopia create snapshot” online on repo1 from system2
- continue “kopia create snapshot” of dir1 on repo1 from system1

I have access to a fast internet connection which is pretty rare for me. I thought I could speed up the process of the initial backup.

Cheers

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**Author:** ![jkowalski](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/jkowalski/32/3_2.png) [@jkowalski](https://kopia.discourse.group/u/jkowalski)\
**Post date:** [April 19, 2021, 5:26pm UTC](https://kopia.discourse.group/t/resume-a-backup-from-another-computer/390/2 "2021-04-19T17:26:42Z")

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That should just work. Second snapshot should not upload anything since it deduplicates every file.

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**Author:** ![din](https://avatars.discourse-cdn.com/v4/letter/d/ccd318/32.png) [@din](https://kopia.discourse.group/u/din)\
**Post date:** [April 23, 2021, 8:09am UTC](https://kopia.discourse.group/t/resume-a-backup-from-another-computer/390/3 "2021-04-23T08:09:09Z")

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It’s working great.

Is there a way to change the user responsible for the maintenance? The initial backup was not created by the usual user.

Thanks

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**Author:** ![jkowalski](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/jkowalski/32/3_2.png) [@jkowalski](https://kopia.discourse.group/u/jkowalski)\
**Post date:** [April 23, 2021, 1:38pm UTC](https://kopia.discourse.group/t/resume-a-backup-from-another-computer/390/4 "2021-04-23T13:38:36Z")

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Yes.

Kopia maintenance set —owner=me

should do the trick.

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**Author:** ![din](https://avatars.discourse-cdn.com/v4/letter/d/ccd318/32.png) [@din](https://kopia.discourse.group/u/din)\
**Post date:** [April 26, 2021, 8:20pm UTC](https://kopia.discourse.group/t/resume-a-backup-from-another-computer/390/5 "2021-04-26T20:20:14Z")

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> [@jkowalski](#):
>
> Kopia maintenance set —owner=me

It worked. But:

All the snapshots listed with ‘kopia snapshot list’ show an error. And no maintenance --full can complete.

Here is what I did:

I uploaded the initial backup from an external hard drive on a debian machine to b2, running kopia 0.8.1 or 0.8.2. During the upload, I got the error:  
`error refreshing repository: error refreshing content index: error listing index blobs: error listing indexes: error listing n blobs: error listing blobs: error listing all blobs: Post "https://api000.backblazeb2.com/b2api/v1/b2_list_file_names": EOF`  
I cancelled the upload with \<CTRL+c\>, and resumed the upload the next day. It completed smoothly. No error was listed on the single created snapshot listed with ‘kopia snapshot list’.

Few days after, I connected to the repo using kopia-ui on windows. The snapshot found on the repo showed an error and no maintenance was possible. From the command line, I used ‘Kopia maintenance set —owner=me’ as you suggested to be able to run the maintenance.

**edit: Correction: I did not see the initial snapshot on windows. The one showing an error was the first one I could create from the ui on windows.**

I tried to take a few snapshots from the ui and the command line and got some errors such as:  
`unable to remove unused index file: remove C:\Users\Antoine\AppData\Local\kopia\2789c7b9ab36d615\indexes\n3486d8d35d9289881c0baebd7db58a62.sndx:` with a permission denied warning, and:  
` Rewriting contents from short packs... unable to rewrite content "0828897564bc0dc786400aee48bc6db6": unable to write pack: error writing pack: can't save pack data blob peda8d1138a8951f742aa5c2cdc02aa6f-sfefa666418ab3674103: unable to complete PutBlob(peda8d1138a8951f742aa5c2cdc02aa6f-sfefa666418ab3674103) despite 10 retries` when running maintenance --full

Coming back to the linux machine and listing the snapshots, I can only see the initial one and still no error is displayed.

Is there a way to try to fix this, given that I can’t re-upload everything ?

Thanks a lot