-->
Seguimi in Twitter Seguimi in Facebook Seguimi in Pinterest Seguimi in LinkedIn Seguimi in Google+ Seguimi  in Stumbleupon seguimi  in instagram Sottoscrivi il feed
Blender, graphic, software, open source, Linux LibreOffice, open source, openoffice Gimp, graphic, software, open source, Linux kernel, Linux, software, open source Linux, distributions, Ubuntu, Linux Mint, Fedora, Mandriva Jamin, gpl, library, open source matroska, multimedia, container, linux pcman, file manager, linux LuninuX, distribition, Linux, open source Linux, infographic, history
Home » » The Zumastor Linux storage project adds enterprise storage features to Linux

The Zumastor Linux storage project adds enterprise storage features to Linux

The Zumastor Linux storage project adds enterprise storage features to Linux, primarily improved snapshots and remote replication.

Point-in-time, near zero-cost, block level snapshots can be added to any existing filesystem and performance does not degrade with multiple snapshots.

Remote replication is achieved by sending minimal block level deltas between snapshots without having to traverse the entire filesystem like rsync does.

Zumastor is Free software that adds enterprise storage features (primarily improved snapshots and remote replication) to Linux.
You can read all about it in the Zumastor Howto. The current release is 0.6, which adds experimental support for offline resizing.
Prebuilt Debian/Ubuntu packages are available at zumastor.org/downloads/releases.
Kernel Patches
Zumastor requires a few kernel patches. These are online at http://zumastor.googlecode.com/svn/trunk/ddsnap/patches/ and http://zumastor.googlecode.com/svn/trunk/zumastor/patches/. The most interesting patches are:
  • Dan Phillips' bio throttling patch, part of how we prevent deadlock during memory pressure. See lkml discussion from 6 Dec 2007 and coverage at LWN.NET.
  • Dan Phillips' PR_SET_MEMALLOC/PR_SET_LESS_THROTTLE patch, other part of how we prevent deadlock during memory pressure. (Any user app that's in the block writeout path needs to be written very carefully to avoid memory recursion deadlock; in particular, it should probably use mlockall, never allocate any memory while handling a write request (modulo a few KB of Heisenslop), and it should set PF_LESS_THROTTLE|PF_MEMALLOC using prctl, as provided for by this patch.) (Mixed in with the ddsnap stuff for now, sorry; ignore everything but the changes to include/linux/prctl.h and kernel/sys.c.)
  • NFS suspend patch, part of how we make new snapshots available via the NFS server as they arrive from remote sites
Adserver 
                    610x250

If you liked this article, subscribe to the feed by clicking the image below to keep informed about new contents of the blog:

0 commenti:

Post a Comment

Random Posts

My Blog List

Recent Posts

Recent Posts Widget

Popular Posts

Labels

Archive

Followers

Images Photo Gallery

page counter Mi Ping en TotalPing.com
 
Copyright © 2014 Linuxlandit & The Conqueror Penguin