Brad Fitzpatrick (brad) wrote,
Brad Fitzpatrick

a story about raid

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 <>
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.
  • Post a new comment


    default userpic

    Your reply will be screened

    Your IP address will be recorded 

    When you submit the form an invisible reCAPTCHA check will be performed.
    You must follow the Privacy Policy and Google Terms of use.