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High IO Seen On Oracle VM Manager Disk (Doc ID 2492216.1)

Last updated on JUNE 06, 2019

Applies to:

Linux OS - Version Oracle Linux 7.0 and later
Linux x86-64

Symptoms

Monitoring software are generating alerts from the Oracle VM manager disk.

The disk where /u01 is mounted are reaching 100% busy.

The "sar -d" show that in some periods the disk is very busy:

12:00:01 AM       DEV       tps  rd_sec/s  wr_sec/s  avgrq-sz  avgqu-sz     await     svctm     %util
03:50:01 AM  dev249-3     29.03      6.56   1118.70     38.76      5.19    177.49     34.32     99.62
04:00:01 AM  dev249-3     33.44      5.69   1147.48     34.49      9.07    272.13     29.83     99.74
04:10:01 AM  dev249-3     15.73      5.25    384.48     24.78      5.19    330.16     63.46     99.82
04:20:02 AM  dev249-3     32.90      6.01    905.10     27.69      3.83    116.30     30.28     99.63
04:30:01 AM  dev249-3     32.34      6.00    855.96     26.66      3.35    103.64     30.80     99.60
04:40:01 AM  dev249-3     44.45      5.80   1168.81     26.42      2.97     66.72     18.80     83.58

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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