rAID 1

Wed Dec 12 12:11:27 UTC 2007

Here's a question.
If it weren't correct, when you
boot would it stop at the grub prompt?

-----Original Message-----

Message: 3
Date: Tue, 11 Dec 2007 08:05:13 -0800
From: Sean Bruno <sean.bruno at dsl-only.net>
Subject: Re: raid1
To: For users of Fedora <fedora-list at redhat.com>
Message-ID: <1197389113.32026.1.camel at home-desk>
Content-Type: text/plain

On Tue, 2007-12-11 at 12:49 +0000, tony.chamberlain at lemko.com wrote:
> This is of course a more recent installation.
> 
> I just found that in /etc/cron.daily there is a file with a script
> (directory name changed for confidentiality)
> 
> cd /a/b/c/d
> find . -name '*log*' -exec rm -f {} \;
> 
> So if there is no /a/b/c/d it will stay in whatever directory it is in
> (probably root). That is why like initlog, login_pam,so etc.
> have been removed. I just don't know why the stuff in cron.daily
> ran in the afternoon when in /etc/crontabit is set to go at like
> 4:00 AM and this was installed much after 4:00 AM, so the
> cron.daily really shouldn't have run until the next day.
> 
> 
> Here is the output of the raid commands:
> 
> /dev/md0:
> Version : 00.90.01
> Creation Time : Mon Dec 3 11:12:48 2007
> Raid Level : raid1
> Array Size : 104320 (101.89 MiB 106.82 MB)
> Device Size : 104320 (101.89 MiB 106.82 MB)
> Raid Devices : 2
> Total Devices : 2
> Preferred Minor : 0
> Persistence : Superblock is persistent
> 
> Update Time : Mon Dec 10 16:30:59 2007
> State : clean
> Active Devices : 2
> Working Devices : 2
> Failed Devices : 0
> Spare Devices : 0
> 
> UUID : 45d9ab4a:fc74db66:3a595fea:7e2afbdd
> Events : 0.335920
> 
> Number Major Minor RaidDevice State
> 0 8 1 0 active
> sync /dev/sda1
> 1 8 17 1 active
> sync /dev/sdb1
> 
> 
> /dev/md1:
> Version : 00.90.01
> Creation Time : Mon Dec 10 09:58:53 2007
> Raid Level : raid1
> Array Size : 69537280 (66.32 GiB 71.21 GB)
> Device Size : 69537280 (66.32 GiB 71.21 GB)
> Raid Devices : 2
> Total Devices : 2
> Preferred Minor : 1
> Persistence : Superblock is persistent
> 
> Update Time : Tue Dec 11 06:36:51 2007
> State : clean
> Active Devices : 2
> Working Devices : 2
> Failed Devices : 0
> Spare Devices : 0
> 
> UUID : c44f476d:a1f38eb3:b74e1d2d:66efa904
> Events : 0.21479
> 
> Number Major Minor RaidDevice State
> 0 8 2 0 active
> sync /dev/sda2
> 1 8 18 1 active
> sync /dev/sdb2
> 
> 
> 
> 
> 
> 
> ------------------------------
> 
> Message: 5
> Date: Mon, 10 Dec 2007 07:19:55 -0800
> From: Sean Bruno <sean.bruno at dsl-only.net>
> Subject: Re: Raid 1
> To: For users of Fedora <fedora-list at redhat.com>
> Message-ID: <1197299995.25236.3.camel at home-desk>
> Content-Type: text/plain
> 
> 
> On Mon, 2007-12-10 at 12:45 +0000, tony.chamberlain at lemko.com wrote:
> > 
> > 
> > We put Raid 1 (software) on an IBM server. I installed some software
> > and made sure everything
> > worked. Then we realized we needed to set up grub so the machine
> > would boot from either disk.
> > So under Linux Rescue we went into grub and did
> > 
> > device (hd0) /dev/sda
> > root (hd0,0) 
> > setup (hd0)
> > 
> > device (hd1) /dev/sdb
> > root (hd1,0) 
> > setup (hd1)
> > 
> > But then when we booted, everything failed. I noticed a commone
> > message "initlog not found" so I looked on another machine and
> > foiund it under /sbin but not on this one. So I copied it to /sbin
> > and
> > rebooted. It got a lot farther this time, but then got stuck on not
> > being
> > able to find a default theme.
> > 
> > I also noticed that linux rescue puts the linux under /mnt/sysimage
> > (so /etc is /mnt/sysimage/etc, /home is /mnt/sysimage/home, etc)
> > but in addition to those there was still a /etc, /home, etc. I
> > suppose
> > one was the mirrored disk.
> > 
> > So it sounds like we might not have done something correctly. Anyone
> > have any idea? We did set up the whole raid system correctly during 
> > Linux installation on a different machine, and then used that
> > anaconda-ks.cfg
> > file for this one (removing the "#"'s where the raid stuff was
> > commented out
> > in the config file).
> 
> Can you post the output of "mdadm --detail /dev/mdX" for each raid
> device on your machine? It almost sounds like the RAID isn't working
> for you.
> 
> Sean

So, does your system boot at all? Or does it fail when you try to boot
off of one drive vs. another?

Sean

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