# Falling PXC 5.6 after a successful SST

**URL:** <https://forums.percona.com/t/falling-pxc-5-6-after-a-successful-sst/6962>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [April 12, 2019, 8:51am UTC](https://forums.percona.com/t/falling-pxc-5-6-after-a-successful-sst/6962 "2019-04-12T08:51:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![huongtranbong](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/huongtranbong/32/1263_2.png) [@huongtranbong](https://forums.percona.com/u/huongtranbong)\
**Post date:** [April 12, 2019, 8:51am UTC](https://forums.percona.com/t/falling-pxc-5-6-after-a-successful-sst/6962/1 "2019-04-12T08:51:38Z")

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I observe a strange situation when I try to add a second node to the percona galera cluster.  
After a long file upload using xtrabackup-v2 (3.5TB of data and about 1,000,000 files) and successfully passed all the stages, judging by the log, the second node falls with an absolutely uninformative error:

2017-08-29 07:24:51 14705 [Note] InnoDB: Using Linux native AIO  
2017-08-29 07:24:51 14705 [Note] InnoDB: Using CPU crc32 instructions  
2017-08-29 07:24:51 14705 [Warning] InnoDB: innodb\_file\_io\_threads is deprecated. Please use innodb\_read\_io\_threads and innodb\_write\_io\_threads instead  
2017-08-29 07:24:51 14705 [Note] InnoDB: Initializing buffer pool, size = 10.0G  
2017-08-29 07:24:52 14705 [Note] InnoDB: Completed initialization of buffer pool  
2017-08-29 07:24:52 14705 [Note] InnoDB: Highest supported file format is Barracuda.

[mysql\_error.txt](https://forums.percona.com/uploads/short-url/3FoFog8IdPkaeSGtDMRbqx0JRwZ.txt) (13.3 KB)

[innobackupex\_strace.txt](https://forums.percona.com/uploads/short-url/zhpKKeO4bl6N2jYyCl4ovMZad3l.txt) (70.6 KB)

[xtrabackup\_strace.txt](https://forums.percona.com/uploads/short-url/8lAwg9GA5xRdJ5hoCKrgGyl7bgs.txt) (23.6 KB)

[mysql\_strace.txt](https://forums.percona.com/uploads/short-url/lNW8cawZmDkNmPEn3itfThmpA58.txt) (66.2 KB)

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**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\
**Post date:** [January 4, 2021, 9:06pm UTC](https://forums.percona.com/t/falling-pxc-5-6-after-a-successful-sst/6962/2 "2021-01-04T21:06:17Z")

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Let us know if you are still experiencing this issue with 5.7, now that 5.6 is dead the recommended solution to any problem is to upgrade.