Exalytics OVM Server Mount Points (/u01 and /u02) Are Starting Up in Read Only Mode on Reboot and Performance is Very Slow
(Doc ID 2048891.1)
Last updated on JANUARY 31, 2020
Applies to:Exalytics In-Memory Machine X3-4 - Version All Versions and later
Oracle Exalytics Software - Version 188.8.131.52.0 and later
Oracle Enterprise Linux - Version 5.0 and later
Information in this document applies to any platform.
On an Exalytics OVM server, the /u01 and /u02 mount points are coming up in Read only mode on VM reboot and the write speed on the underlying OVM repository is very slow compared to another Exalytics OVM host at the same site. The "# time dd if=/dev/zero of=test bs=1M count=512 conv=fdatasync" output shows significantly slower speed when compared to the same command output from the other server.
On slow server (VM1), command and results are:
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