R1Soft Hot Copy for Linux

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Hot Copy (hcp) - Free Universal Disk Snapshot Utility for Linux Servers

The R1Soft Hot Copy utility creates an instant point-in-time volume snapshot of any block device while the system is running without interrupting applications.  Works on almost any Linux block device.  It is like Volume Shadow Copy for Linux.

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Hot Copy for Linux
 
 

Linux Hot Copy - System Requirements

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Installer

RPM & APT Packages

Memory

Recommended Minimum 512 MB

Linux Kernel

2.6

File Systems

Works with any local file system

Note:
Can not snapshot remote Network File Systems

Disk Space

Block devices should have at least 15% free space available.  OR alternatively you can specify a file system with more free space to store Hot Copy changed blocks.

Disks and Volumes                     

Virtually Any Block Device
IDE, SATA, SCSI, SAS, ISCSI, Fibre Channel,
LVM, MD (Software RAID), Hardware RAID, DRBD

Linux Distributions

Linux Distribution

Edition

RedHat Enterprise
32-bit (x86) & 64-bit (x64)

REL 4, REL 5, REL 6

CentOS
32-bit (x86) & 64-bit (x64)

CentOS-4, CentOS-5

Ubuntu
32-bit (x86) & 64-bit (x64)

5.04 (Hoary Hedgehog), 5.10 (Breezy Badger), 6.06 (Dapper Drake), 6.10 (Edgy Eft), 7.04 (Feisty Fawn), Ubuntu 7.10 (Gutsy Gibbon), Ubuntu 8.04 (Hardy Heron), Ubuntu 8.10 (Intrepid Ibex), 9.04 (Jaunty Jackalope), 9.10 (Karmic Koala), 10.04 (Lucid)*, 10.10 (Maverick)*

Fedora
32-bit (x86) & 64-bit (x64)

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12*

Debian
32-bit (x86) & 64-bit (x64)

4.0 (Etch), 5.0 (lenny), 6.0 (Squeeze)*

Novell SUSE Enterprise Server
32-bit (x86) & 64-bit (x64)

10, 11

Open SUSE
32-bit (x86) & 64-bit (x64)

10, 11

Mandriva
32-bit (x86) & 64-bit (x64)

2008, 2009, 2010

Virtualization

Technology

Physical Server Install

Guest (Virtual Machine) Install

Citrix XenServer 5                          

No

Install into guest VMs (domU)

Xen Source Hypervisor

No

Install into guest VMs (domU)

VMWare ESXi

No

Install into guest VMs

VMWare Server

No

Install into guest VMs

VMWare Workstation

No

Install into guest VMs

Parallels Virtuozzo

Yes protects all Virtuozzo containers with one install

No can not be installed into individual Virtuozzo containers

KVM

No

Install into guest VMs

*Known Linux Kernels with Severely Broken Ext4

There was an issue with Ext4 introduced in "vanilla" Kernel.org kernel 2.6.32 and has been patched and released "down stream" into various Linux distributions.  When any Ext4 file system snapshot is performed on an effected kernel the file system can deadlock causing a hung or crashed operating system.

This is a Linux kernel bug completely out of the control of R1Soft

Do not use the following Linux kernel versions with Ext4:

  • Ubuntu Lucid (10.04) Betas and Release Candidates - we have reports that Ubuntu Lucid 2.6.32-24.41 and greater are fixed
  • Ubuntu Maverick (10.10) Betas and Release Candidates
  • Debian 6 (Squeeze) Betas and Release Candidates
  • Fedora Core 12 Betas and Release Candidates
  • Xen (4.0 / 4.1) - Do Not use Ext4 on 2.6.32-5-xen - 2.6.32-35-xen_02

More Information:

Kernel.org Bug Report
https://bugzilla.kernel.org/show_bug.cgi?id=16278

Ubuntu Bug Report
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/595489;

 

 
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