incorrect error message for file not found

[FlorianHeigl]

Bug Report

Version of OpenNebula

• 5.2.2
• 5.4.0
• 5.4.1
• 5.4.2
• 5.4.3
• 5.4.4
• 5.4.5
• 5.4.6
• 5.4.7
• 5.4.8
• 5.4.9
• 5.4.10
• 5.4.11
• Development build

Probably all

Component

• Authorization (LDAP, x509 certs...)
• Command Line Interface (CLI)
• Contextualization
• Documentation
• Federation and HA
• Host, Clusters and Monitorization
• KVM
• Networking
• Orchestration (OpenNebula Flow)
• Packages
• Scheduler
• Storage & Images
• Sunstone
• Upgrades
• User, Groups, VDCs and ACL
• vCenter

Description

The following error is given when trying to import an image with an incorrect filename
"[ImageAllocate] Cannot parse image SIZE:"

Expected Behavior

Report that the file isnt there

Actual Behavior

The underlying errors are not correctly handled / passed upwards
There is no check if the file exists prior to scanning its size

How to reproduce

Import an image, give incorrect name

[rsmontero]

This issue needs to improve fs_size function (in libfs.sh) to return the message size in a variable so it can be send to oned as part of the response message. Currently is only sent to error stream and so only visible in oned.log.

Command manager expects the error information enclosed in the ERROR_OPEN/CLOSE tags. See GenericCommand::get_error_message in DriverExecHelper