# Back and Restore from xtradb 8.0.26

**URL:** <https://forums.percona.com/t/back-and-restore-from-xtradb-8-0-26/14132>\
**Category:** Percona XtraDB Cluster 8.x\
**Created:** [January 27, 2022, 6:01pm UTC](https://forums.percona.com/t/back-and-restore-from-xtradb-8-0-26/14132 "2022-01-27T18:01:54Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![danarashad](https://avatars.discourse-cdn.com/v4/letter/d/7ab992/32.png) [@danarashad](https://forums.percona.com/u/danarashad)\
**Post date:** [January 27, 2022, 6:01pm UTC](https://forums.percona.com/t/back-and-restore-from-xtradb-8-0-26/14132/1 "2022-01-27T18:01:54Z")

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I did a streaming backup on my new cluster. And now I want to test the backup and restore process.  
backup script.

```auto
xtrabackup --defaults-file=/etc/mysqld.cnf --defaults-group=mysqld --socket=/var/mysqld/mysqld.sock --user=backup --password=xxx --backup --stream=xbstream --compress --target-dir=$dest 2> $log | gzip - | ssh mysql@backup "cat - > /backups/$dest_folder/$backup_file" > /dev/null 2>&1

```

Do I need to decompress the data to restore?

`xbstream --directory=/db/restore_data --extract /db/backup_2022-01-18.xbstream --verbose`  
When I do the above to extract the data nothing happens.

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**Author:** ![Marcelo\_Altmann](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/marcelo_altmann/32/11299_2.png) [@Marcelo\_Altmann](https://forums.percona.com/u/Marcelo_Altmann)\
**Post date:** [January 27, 2022, 6:12pm UTC](https://forums.percona.com/t/back-and-restore-from-xtradb-8-0-26/14132/2 "2022-01-27T18:12:20Z")

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Hi @danarashad

xbstream will expect to have the files from STDIN, please do:

```auto
xbstream --directory=/db/restore_data --extract --verbose < /db/backup_2022-01-18.xbstream 

```

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<div class="post-metadata">

**Author:** ![danarashad](https://avatars.discourse-cdn.com/v4/letter/d/7ab992/32.png) [@danarashad](https://forums.percona.com/u/danarashad)\
**Post date:** [January 27, 2022, 6:55pm UTC](https://forums.percona.com/t/back-and-restore-from-xtradb-8-0-26/14132/3 "2022-01-27T18:55:05Z")

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When I run the above I am getting the following error

```auto
xb_stream_read_chunk(): wrong chunk magic at offset 0x0
exit code: 1

```

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<div class="post-metadata">

**Author:** ![danarashad](https://avatars.discourse-cdn.com/v4/letter/d/7ab992/32.png) [@danarashad](https://forums.percona.com/u/danarashad)\
**Post date:** [January 28, 2022, 2:09pm UTC](https://forums.percona.com/t/back-and-restore-from-xtradb-8-0-26/14132/4 "2022-01-28T14:09:35Z")

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I re did the backup and it seems to be the backup was bad. After running the backup again, i am no able to extract the data.