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Top Forums UNIX for Advanced & Expert Users Linux Thin Lun space reclamation Post 302962155 by Peasant on Wednesday 9th of December 2015 03:27:10 AM
Old 12-09-2015
Hitachi has reclaim zero pages on enterprise level storage (VSP)

This is mostly used in combination with software on the machine.
For instance, with ASM, you can reclaim zero pages from ASM, then reclaim on storage.

A nice document :
https://www.hds.com/assets/pdf/recla...on-utility.pdf

There is an article on RHEL network regarding :
https://access.redhat.com/solutions/45514

It involves creating a lvol with all free space from volume group, dd-ing the lvol with using /dev/zero, removing the lvol, remount with discard and running fstrim.
After that you can reclaim the storage space from storage GUI/command line.

Dunno how would you apply the same on raw volume tho (no VG).

Hope that helps.
Regards
Peasant.

Last edited by Peasant; 12-09-2015 at 04:34 AM..
This User Gave Thanks to Peasant For This Post:
 

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OPENNEBULA(1)							   User Commands						     OPENNEBULA(1)

NAME
OpenNebula - OpenNebula occi-storage SYNOPSIS
occi-storage <COMMAND> [OPTIONS] [PARAMETERS] DESCRIPTION
occi-storage - Manages OCCI storage resource OPTIONS
--help, -h Show help --username <id>, -U <id> The username of the user --password <key>, -P <key> The password of the user --url <url>, -R <url> Set url as the web service url to use --timeout <seconds>, -T <seconds> Sets a timeout for the http connection --debug, -D Enables verbosity --multipart, -M Use 'multipart-post' library instead of Curb/Curl --verbose Show resources in verbose mode COMMANDS
create <occi xml file> creates a new storage resource described by the provided <occi xml file> list lists available storage resources show <storage id> retrieves the OCCI XML representation of the storage resource identified by <storage id> update <occi xml file> updates the representation of the storage resource represented by the provided <occi xml file> delete <storage id> deletes the storage resource idenfitied by <storage id> COPYRIGHT
Copyright 2002-2012, OpenNebula Project Leads (OpenNebula.org) Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 OpenNebula 3.4.1 April 2012 OPENNEBULA(1)
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