mysql 5.6: problem to start mysql_multi

Hello,

I am getting the following error when I try to start mysql_multi :

[Note] InnoDB: Waiting for purge to start
2015-08-27 05:15:48 8147 [Note] InnoDB: 5.6.15 started; log sequence number 5317407989
2015-08-27 05:15:48 8147 [Note] Recovering after a crash using mysqld-bin
2015-08-27 05:15:49 8147 InnoDB: The OS said file flush did not succeed
2015-08-27 05:15:49 7f7475127700  InnoDB: Operating system error number 5 in a file operation.
InnoDB: Error number 5 means 'Input/output error'.
InnoDB: Some operating system error numbers are described at
InnoDB: http://dev.mysql.com/doc/refman/5.6/en/operating-system-error-codes.html
2015-08-27 05:15:49 8147 InnoDB: File (unknown): 'flush' returned OS error 105. Cannot continue operation



any ideas why, and how can I fix this

Thanks in advance
CCVOIPAsked:
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theGhost_k8Database ConsultantCommented:
The very first doubt would be files/dir permissions issue. Go ahead and verify the permissions for "mysql" user for datadir etc.

If you need steps to setup you may look at this blog from Percona for step by step guide or we do have mysql documentation.
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CCVOIPAuthor Commented:
thanks for you response.

I rebooted the host and everything came back to normal.

thanks again!
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