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Brad Fitzpatrick

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a story about raid [Mar. 25th, 2004|09:01 pm]
Brad Fitzpatrick
So just last night I posted about my new server / RAID array, right?

Tonight I'm copying over the contents of the old server's 100GB RAID to the new RAID.

During the first file being copied over (a big .tar.gz from /raid/backups/, first directory alphabetically), my desktop freezes (which netboots off my old server) and I hear louding clicking noises from the other room.

My old server's IDE bus was:

hda (primary master): 40 GB boot
hdb (primary slave): 100 GB, raid 1
hdc (secondary master): cd-rom
hdd (secondary slave): 100 GB, raid 1

Anyway, hdb was the clicky one. And it took out the primary channel, rendering the machine very pathetic (and my desktop frozen) until I unplugged the disk from hdb. At that point, hda came back alive, and the RAID-1 realized hdb was gone and gave all traffic to hdd.

My rsync from sammy kept on going, and my desktop came back alive.

Morals of this story:

-- disks die
-- funny timing
-- PATA w/ shared channels suck. go SATA!

Heh, just got email:
From: mdadm monitoring <root@xxSNIPPEDxx.danga.com>
To: brad@danga.com
Subject: DegradedArray event on /dev/md0:tally

This is an automatically generated mail message from mdadm
running on tally

A DegradedArray event had been detected on md device /dev/md0.

Faithfully yours, etc.
Oh, and mdadm is cool.

Oh, and 100Mbps ethernet is fucking slow.
LinkReply

Comments:
[User Picture]From: jackola
2004-03-25 09:07 pm (UTC)
I wonder if RAID on a laptop is possible.
(Reply) (Thread)
[User Picture]From: brad
2004-03-25 09:10 pm (UTC)
If you have two disks, sure.

But you're probably just better off backing up to another machine often, since you can so easily drop a laptop and kill both its disks.
(Reply) (Parent) (Thread)
[User Picture]From: way2tired
2004-03-25 09:55 pm (UTC)
Do I sense a gigabit switch in your future?
(Reply) (Thread)
[User Picture]From: brad
2004-03-25 10:15 pm (UTC)
I'll need three, and 1 more NIC.
(Reply) (Parent) (Thread)
[User Picture]From: 12am_roseblood
2004-03-25 10:23 pm (UTC)

random

This is really random... but I noticed that we have the same birthdate.... different year, but same month and say. Yeah.
Just incase you were wondering... which I'm sure you weren't. lol
Bye
-Angie
(Reply) (Thread)
[User Picture]From: scsi
2004-03-26 08:42 am (UTC)
Smartmontools is pretty good if your HD's support S.M.A.R.T. Even debian packages too.
(Reply) (Thread)
[User Picture]From: blondefever
2004-03-26 12:54 pm (UTC)

y0

hi there. i was reading your other journal. the one where you tease us with how its not your personal journal. i found this.. not what i expected in the mind of the man who started an interactive electric diary revolution. i guess you got all the goods on lock down. well brad, my name is amanda and its a pleasure to make your accaintance.

p.s.~ you should comment in my journal so i can brag about it to all my friends. =)
p.s.s.~ are you a stoner?
(Reply) (Thread)
[User Picture]From: brad
2004-03-26 01:37 pm (UTC)

Re: y0

p.s.s.~ are you a stoner?

You'd think, eh, with me starting a site like this. One would have to be high.
(Reply) (Parent) (Thread)