[ILUG] Highpoint Sata RAID
weeboy at conorwynne.com
Mon Mar 28 11:11:06 IST 2005
> On 28 Mar 2005, at 04:17, Paul Jakma wrote:
>> Linux MD seems to support 'growing' RAID devices, regardless of level.
> So it does, to my surprise. But then, you can always rely on Linux
> developers to scratch an itch. But a couple of quotes from the
> raidreconf (the tool which does the business) man page
I must look into that as it could be very interesting to convert from a
RAID1 to a RAID5 or whatnot. Researching...
> The author will give you no guarantee whatsoever, that this program
> works in any specific way at all. It may well destroy all data on any
> device connected directly, indirectly, or not at all, to any system
> this software is used on.
I would have expected such. Playing with your data without at least three
verified backups - > you know, actually performing restores before playing
with fire. Its amazing the amount of people who assume their backup
software will restore without a hitch without ever testing it. And when it
fails they come crying/bitching.
I had one guy recently who lost his data due to FS corruption, his cpio
backup on his DDS4 was invalid and he never knew.
Luckily he also had legato networker which streamed to a big library and
was able to use that.
>> As do many proprietary hardware RAID devices.
> I wouldn't be surprised if their documentation has similar warnings.
> The bottom line is that resizing a RAID-5 array on the fly is really
> playing with fire, as disk blocks, containing your data, are zipping
> around the place with wild abandon. The original poster did specify
> that his data was valuable, so he'd better be sure to have a backup
> before trying any of these resizing operations.
Hear hear, this cannot be over-emphasised
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