Exalogic : Exapatch exareport command potentially corrupts file systems in guest vServers
Last updated on APRIL 25, 2017
Applies to:Oracle Exalogic Elastic Cloud Software - Version 22.214.171.124.160419 to 126.96.36.199.170418
The command "exareport", an option supported by "exapatch", is listed as a prerequisite for patching of the Exalogic Infrastructure. It is used to generate an HTML report of the patching status and versions of the Rack components and can be used both prior to and following the PSU application.
During the execution of the command, it lists all current guest vServers running on each compute node and mounts the root file system of each running guest vServer in read-only mode via a loop back mount to obtain additional information for the exareport.
Under certain conditions, although the mount is performed in read-only mode, this could result in errors while mounting the disk images. In isolated cases, file system corruption in guest vServers has been attributed to these mounts performed for generating exareport.
Prior or post PSU upgrade, errors are observed while using exareport to generate an HTML report.
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