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Old 10-17-2010, 05:33 AM   #1
Registered: Oct 2006
Location: Porsgrunn, Norway
Distribution: CentOS 5 / 6 / 7
Posts: 104

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Linux Software Raid 5 Resync happens often.

Hi All. CentOS 5.x x64

I have 2 servers both with software raid 5 for the main storage partitions.
6 x 1.5 Tbyte drives.
I observe that the these arrays seem to resync quite often.
cat /proc/mdstat or smartctl -a does not show any problems with the drives.
Is this normal. What is the default period between resyn.
What would cause a resyn of the array.

The standard resync time for the array is over 900 minutes which can become an inconvience for the server users if it occurs on a week day as it degrades the performance. Today it happens on a Sunday.

Thanks for taking the time to read this.
Old 10-17-2010, 06:03 AM   #2
Registered: Nov 2008
Location: Lower Saxony, Germany
Distribution: CentOS, RHEL, Solaris 10, AIX, HP-UX
Posts: 731

Rep: Reputation: 137Reputation: 137

any log entries from /var/log/messages available?


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