# Percona throws errors and fails to restart during yum update

**URL:** https://forums.percona.com/t/percona-throws-errors-and-fails-to-restart-during-yum-update/1809
**Category:** Other MySQL® Questions
**Created:** [May 3, 2012, 10:49am UTC](https://forums.percona.com/t/percona-throws-errors-and-fails-to-restart-during-yum-update/1809 "2012-05-03T10:49:06Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![tobinisgod](https://avatars.discourse-cdn.com/v4/letter/t/45deac/32.png) [@tobinisgod](https://forums.percona.com/u/tobinisgod)
#### Post date: [May 3, 2012, 10:49am UTC](https://forums.percona.com/t/percona-throws-errors-and-fails-to-restart-during-yum-update/1809/1 "2012-05-03T10:49:06Z")

</div>

I’ve mentioned this before (not that I can find the post…\_) but didn’t have any output to go with my complaint.

When I ran “yum update” recently, Percona output the below. It also failed to restart. I need to remember to update mysql separately to reduce database outage time.

Does everyone have this problem or have I ended up with some weird in my (pretty vanilla) config?

ls: /var/lib/mysql/_.err: No such file or directory  
ls: /var/lib/mysql/_.err: No such file or directory  
Giving mysqld 5 seconds to exit nicely  
Updating : Percona-Server-server-55 60/324  
120421 20:42:54 [Note] Flashcache bypass: disabled  
120421 20:42:54 [Note] Flashcache setup error is : ioctl failed

120421 20:42:54 [Note] Flashcache bypass: disabled  
120421 20:42:54 [Note] Flashcache setup error is : ioctl failed

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !  
To do so, start the server, then issue the following commands:

/usr/bin/mysqladmin -u root password ‘new-password’  
/usr/bin/mysqladmin -u root -h password ‘new-password’

Alternatively you can run:  
/usr/bin/mysql\_secure\_installation

which will also give you the option of removing the test  
databases and anonymous user created by default. This is  
strongly recommended for production servers.

See the manual for more instructions.

Please report any problems with the /usr/bin/mysqlbug script!

Percona recommends that all production deployments be protected with a support  
contract ([URL][http://www.percona.com/mysql-suppport/[/URL]](http://www.percona.com/mysql-suppport/%5B/URL%5D)) to ensure the highest uptime,  
be eligible for hot fixes, and boost your team’s productivity.  
Percona Server is distributed with several useful UDF (User Defined Function) from Maatkit.  
Run the following commands to create these functions:  
mysql -e “CREATE FUNCTION fnv1a\_64 RETURNS INTEGER SONAME ‘libfnv1a\_udf.so’”  
mysql -e “CREATE FUNCTION fnv\_64 RETURNS INTEGER SONAME ‘libfnv\_udf.so’”  
mysql -e “CREATE FUNCTION murmur\_hash RETURNS INTEGER SONAME ‘libmurmur\_udf.so’”  
See [URL][Google Code Archive - Long-term storage for Google Code Project Hosting.](http://code.google.com/p/maatkit/source/browse/trunk/udf%5B/URL%5D) for more details