[CoLoCo] RAID controller

[David L. Willson]

Man I hate bottom-posting...

On Tue, 2008-01-01 at 19:19 -0700, Jim Hutchinson wrote:
> On 1/1/08, David L. Willson <DLWillson at thegeek.nu> wrote:
> > > How do I know if I have a 64 bit PCI slot? If it helps, I have an Asus
> > > A8N32SLI board.
> >
> > 64-bit PCI slots are about twice as long as normal PCI slots.
> > Here for pictures:
> > http://en.wikipedia.org/wiki/Peripheral_Component_Interconnect
> > According to pictures I could find of your motherboard, you haven't got
> > one.  You can still run a 64-bit card, but it won't go ~quite~ as fast
> > as it could in my computer.  :-)
> 
> The specs on my board
> (http://www.asus.com/products.aspx?modelmenu=2&model=744&l1=3&l2=15&l3=226&l4=0)
> don't say anything about 32 or 64 bit. Probably means just 32. The
> pics on the page don't look any different to me.
> 
> >
> > > Yeah, I'm just screwing around. I have software RAID set up but I
> > > don't think it works. My second drive (i.e. the mirror copy) is mostly
> > > empty. That can't be right. I'd like a hardware RAID setup for backup
> > > purposes.
> >
> > I'm not sure how you are even looking at the array elements separately.
> > I didn't know you could do that.  I don't think you have the mirror you
> > think you have.  Read this page for add'l info:
> > http://linux-ata.org/faq-sata-raid.html
> 
> Well, using gparted I can see both drives. One has a lot of stuff the
> other doesn't. With fdisk -l I see this...
> 
> Disk /dev/sda: 320.0 GB, 320072933376 bytes
> 255 heads, 63 sectors/track, 38913 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0x00026af0
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1               1       36230   291017443+  fd  Linux raid autodetect
> /dev/sda2   *       36231       38662    19535040   fd  Linux raid autodetect
> /dev/sda3           38663       38913     2016157+  82  Linux swap / Solaris
> 
> Disk /dev/sdb: 320.0 GB, 320072933376 bytes
> 255 heads, 63 sectors/track, 38913 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> Disk identifier: 0x000b02b7
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sdb1               1       36230   291017443+  fd  Linux raid autodetect
> /dev/sdb2           36231       38662    19535040   fd  Linux raid autodetect
> /dev/sdb3           38663       38913     2016157+  82  Linux swap / Solaris
> 
> Disk /dev/md0: 298.0 GB, 298001760256 bytes
> 2 heads, 4 sectors/track, 72754336 cylinders
> Units = cylinders of 8 * 512 = 4096 bytes
> Disk identifier: 0x00000000
> 
> Disk /dev/md0 doesn't contain a valid partition table
> 
> Disk /dev/md1: 20.0 GB, 20003815424 bytes
> 2 heads, 4 sectors/track, 4883744 cylinders
> Units = cylinders of 8 * 512 = 4096 bytes
> Disk identifier: 0x00000000
> 
> Disk /dev/md1 doesn't contain a valid partition table
> 
> Sure looks like there are RAID partitions.
> >
> > Can you bring the box to the install-fest on Saturday?
> 
> What install-fest? I don't think I'll be going. My brother is supposed
> to be coming for a delayed Christmas.

This Installfest: http://clue.denver.co.us/display.php?node=installfest

I'd love to have another Panera whenever a few of us are ready.

Need three things, Jim:

1) Output of mdadm --detail --scan
2) Output of df -hT
3) What makes you say that your RAID1's not working?  Something about
the secondary drive being almost empty?  Some relevant output...