# Recovery actions after snapshot verify - bad sectors

**URL:** <https://kopia.discourse.group/t/recovery-actions-after-snapshot-verify-bad-sectors/8729>\
**Category:** Support\
**Created:** [November 29, 2025, 5:37am UTC](https://kopia.discourse.group/t/recovery-actions-after-snapshot-verify-bad-sectors/8729 "2025-11-29T05:37:43Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![skillful8854](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/skillful8854/32/1921_2.png) [@skillful8854](https://kopia.discourse.group/u/skillful8854)\
**Post date:** [November 29, 2025, 5:37am UTC](https://kopia.discourse.group/t/recovery-actions-after-snapshot-verify-bad-sectors/8729/1 "2025-11-29T05:37:43Z")

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Hello.

I am running Kopia server and have a repository on an external USB drive which suffered bad sectors.

Following and fsck I ran ``kopia snapshot verify --verify-files-percent=100 --file-parallelism=10 --parallel=10` `and it reported one error/missing blob:

```auto
error processing root@...:/...@2024-01-30 02:05:00 AEDT/...: object Ix2c92... is backed by missing blob p9521b991b3cefd6ccd6f890a18d2f030-s46d8c16355c93ae8124

```

What do I do next? How do I clear this error?

Is it safe for me to restart my server and allow the clients to resume backing up?

Is there any way I can force kopia to “fill in” or remake the missing blob? It appears to affect a single file - will the blob be recreated if/when the relevant client backs up this file again?

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<div class="post-metadata">

**Author:** ![kapitainsky](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/kapitainsky/32/535_2.png) [@kapitainsky](https://kopia.discourse.group/u/kapitainsky)\
**Post date:** [November 29, 2025, 5:51am UTC](https://kopia.discourse.group/t/recovery-actions-after-snapshot-verify-bad-sectors/8729/2 "2025-11-29T05:51:04Z")

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I would run [kopia repository repair filesystem](https://kopia.io/docs/reference/command-line/advanced/repository-repair-filesystem/)

But as always in such cases start with making your repo copy first.

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<div class="post-metadata">

**Author:** ![skillful8854](https://yyz2.discourse-cdn.com/free1/user_avatar/kopia.discourse.group/skillful8854/32/1921_2.png) [@skillful8854](https://kopia.discourse.group/u/skillful8854)\
**Post date:** [December 6, 2025, 11:11am UTC](https://kopia.discourse.group/t/recovery-actions-after-snapshot-verify-bad-sectors/8729/3 "2025-12-06T11:11:17Z")

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I ended up restoring the missing and corrupted blobs from a secondary offline repository. It took four rounds of verify/restore/verify but after that it appears to be ok.