Of RAID controllers and write caching

 

Posted by Dan on Wednesday, November 16, 2005 at 6:18 PM

So some of you (heh... like I actually have any readers) might've noticed that my blog has been down for the past couple of days. Well, I got it in my head to setup a RAID1 array on my server here at home over the weekend, and the fun seems to be just starting.

Setting up the array was exceedingly easy (too easy I think... an omen of what was to come). After configuring the drives and formatting, I promptly dumped about 200gb of data from my existing, non-mirrored, drives onto them. All was well until Tuesday when I noticed I couldn't connect to the server from work. Upon returning home I found that the RAID controller was having problems accessing one of the drives in the new mirrored array. I rebooted, re-seated cables, and tried to rebuild the disk... it failed at 76% (after about 3 hours of churning away). I have another RAID controller coming in the mail that should let me run more than 1 array (I'd like to mirror my existing 120GB drives as well), and am hoping this is a controller problem, not a disk one.

The latest development is that I was greeted with a "delayed write failure" error on one of the non-mirrored disks when I turned on the computer to check my e-mail before work today. As I didn't want to lose any data, I promptly shut it back down and left it off for the duration of the workday. I once again hope that all of this is controller-related (both drives that were having problems were on the same IDE channel), and that things will improve when I get my Adaptec stand-alone controller tomorrow or Friday. I have just booted (you're reading this, aren't you) the machine again, disabled write caching, and am waiting to see what happens.

There's a lot of other fun things I'd like to write about right now (like a rather irritating eBay experience I'm going through), but I'll save them for later, once I get my machine working more reliably (or maybe a real webhost).

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Yay... preview works!

 

Posted by Dan on Sunday, November 06, 2005 at 1:54 PM

I finally figured out my code problem. It turns out that if you name an object on the form "submit", i.e. a button, then try to call form.submit(), it is instead referencing said object instead of the Form's submit function. There was much beating of my head on the desk when I learned this after a few hours of searching the web. Anyway... what it means to you is that you can now preview comments before posting, and there is confirmation given after posting a comment as well.

Well, that's it for now. Comment away. With this functionality in place I should be moving this site from the server sitting in my apartment to a real web host soon.

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