Help finding a Unix friendly RAID 1 backup Post: 302507700

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Special Forums Hardware Filesystems, Disks and Memory Help finding a Unix friendly RAID 1 backup Post 302507700 by c.wakeman on Thursday 24th of March 2011 01:17:08 PM

03-24-2011

Registered User

Quote:

Did you get the output of cat /proc/filesystems ?

Sorry, didn't realize in your earlier post you were asking for this as well.

Code:

$ cat /proc/filesystems
nodev   sysfs
nodev   rootfs
nodev   bdev
nodev   proc
nodev   cgroup
nodev   cpuset
nodev   debugfs
nodev   securityfs
nodev   sockfs
nodev   pipefs
nodev   anon_inodefs
nodev   tmpfs
nodev   inotifyfs
nodev   devpts
nodev   ramfs
nodev   hugetlbfs
nodev   mqueue
nodev   usbfs
        ext3
nodev   rpc_pipefs
nodev   nfsd
$

I'm not seeing XFS or NTFS...

Quote:

A) Offline backup. Turn your server off, boot some backup software, run the backup, reboot, done. It won't be able to serve files while it's backing up.

Instead I'd suggest booting a gentoo minimal liveCD. The amd64 disk is probably better if your system can boot 64-bit at all (whether your server's OS is 64-bit isn't relevant for an offline backup, just your CPU).

This will take roughly four to eight hours, I think. In the end you'll have a raw, bare-metal backup; Windows won't be able to use it, but Linux can, and if your server's hard drive dies, you could crack the drive out of your Buffalo's case and expect it to boot normally inside your server. (Assuming, of course, it has the proper connectors.)

There might even be ways to keep the /home partition on it fresh once you make it since your Linux server will still be able to talk to this disk.

B) Online backup. It won't back up the whole server, just your company's datafiles. You may be able to do this with minimal interruption to the server's clients, but, files in use may not be backed up properly.

It seems option B might be easier but (from what I can gather) has the following limitation: it only copies the datafiles, not the entire hard drive. So, with the first option, if the server hard drive fails, I could conceivably turn the external hard drive into the new server hard drive (assuming, as you say, the connections match). With the second option, if the server hard drive fails, I would need to purchase a new server hard drive, program it accordingly, and upload/unpack the .tar file onto the new hard drive. Is this correct? Do you have any preferences/suggestions for what you would do?

Thanks again!

c.wakeman

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svn-fast-backup

svn-fast-backup(1)					      General Commands Manual						svn-fast-backup(1)

NAME

       svn-fast-backup - very fast backup for Subversion fsfs repositories.

SYNOPSIS

       svn-fast-backup [-q] [-k{N|all}] [-f] [-t] [-s] repos_path backup_dir

DESCRIPTION

       svn-fast-backup uses rsync snapshots for very fast backup of a Subversion fsfs repository at repos_path to backup_dir/repos-rev, the latest
       revision number in the repository.  Multiple fsfs backups share data via hardlinks, so old backups are almost free, since a newer  revision
       of a repository is almost a complete superset of an older revision.

       This  is  good for replacing incremental log-dump+restore-style backups because it is just as space-conserving and even faster; there is no
       inter-backup state (old backups are essentially caches); each backup directory is self-contained.  It has the same  command-line  interface
       as svn-hot-backup(1) (if you use --force), but only works for fsfs repositories.

       svn-fast-backup keeps 64 backups by default and deletes backups older than these; this can be adjusted with the -k option.

OPTIONS

       -h, --help
	      Shows some brief help text.

       -q, --quiet
	      Quieter-than-usual operation.

       -k, --keep=N
	      Keep a specified number of backups; the default is to keep 64.

       -k, --keep=all
	      Do not delete any old backups at all.

       -f, --force
	      Make a new backup even if one with the current revision exists.

       -t, --trace
	      Show actions.

       -s, --simulate
	      Don't perform actions.

AUTHOR

       Voluntary contributions made by many individuals.  Copyright (C) 2006 CollabNet.

								    2006-11-09							svn-fast-backup(1)