# While appending to file: /var/lib/dremio/db/catalog/002798.sst: No space left on device

**URL:** <https://community.dremio.com/t/while-appending-to-file-var-lib-dremio-db-catalog-002798-sst-no-space-left-on-device/9277>\
**Category:** Uncategorized\
**Created:** [June 13, 2022, 3:17am UTC](https://community.dremio.com/t/while-appending-to-file-var-lib-dremio-db-catalog-002798-sst-no-space-left-on-device/9277 "2022-06-13T03:17:21Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Dalai](https://avatars.discourse-cdn.com/v4/letter/d/94ad74/32.png) [@Dalai](https://community.dremio.com/u/Dalai)\
**Post date:** [June 13, 2022, 3:17am UTC](https://community.dremio.com/t/while-appending-to-file-var-lib-dremio-db-catalog-002798-sst-no-space-left-on-device/9277/1 "2022-06-13T03:17:21Z")

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Hi,

My servers /var/lib/dremio/db/catalog directory is full and hundreds of GB files in there. Most disk consumed files are xxxxx.log files (002977.log). When I deleted all \*.log files and restarted dremio service, all my operations like create user and create spaces, views reverted and no users, spaces and views I created before.

What is this \*.log and \*.sst files? How should I manage this \*.log files to free up space?

Also, Directory “/var/lib/dremio/cm/fs” takes huge space of disk. What information is stored in there and how should we manage it?

Thanks, Dalai

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**Author:** ![balaji.ramaswamy](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/balaji.ramaswamy/32/843_2.png) [@balaji.ramaswamy](https://community.dremio.com/u/balaji.ramaswamy)\
**Post date:** [June 24, 2022, 4:42am UTC](https://community.dremio.com/t/while-appending-to-file-var-lib-dremio-db-catalog-002798-sst-no-space-left-on-device/9277/2 "2022-06-24T04:42:54Z")

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@Dalai

The .log and .sst files are the Dremio metadata database and you should NEVER delete anything from there. What is the size of `/var/lib/dremio/`

`df -h /var/lib/dremio/`

“/var/lib/dremio/cm/fs” contains C3 files so Dremio can read of local instead of your distributed store once a dataset is queried once, it improves performance

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**Author:** ![Diego](https://avatars.discourse-cdn.com/v4/letter/d/f04885/32.png) [@Diego](https://community.dremio.com/u/Diego)\
**Post date:** [December 14, 2022, 6:10pm UTC](https://community.dremio.com/t/while-appending-to-file-var-lib-dremio-db-catalog-002798-sst-no-space-left-on-device/9277/3 "2022-12-14T18:10:39Z")

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@balaji.ramaswamy

I wrote this question [Disk management and db/catalog files](https://community.dremio.com/t/dremio-server-disk-management/10045) can you give a help there?