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Dealing with RAID installation
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Aaron W. Hsu
Oct 14, 2012, 12:21:39 AM10/14/12
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I was trying to install a RAID-0 softraid installation on Slackware 14.0
the other day. Following through the documentation seemed to all go well
up until the point where I tried to reboot. For some reason, I cannot seem
to get the md* disks recognized by the huge kernels. Normally, my process
is to reboot into the new system using the huge kernels and then break out
an initrd and use the generic kernel from then on, but for some reason, I
can only get RAID to work through the generic kernel, so I had to actually
chroot into the new installation and set everything up for the generic
kernel *before* I rebooted from my initial installation to get everything
working the way that I wanted.
Could someone explain this and maybe suggest what I am doing wrong with
the huge kernel that is not allowing it to work? I am on Slackware64 14.0
with two 750GB disks.
--
Aaron W. Hsu | arc...@sacrideo.us | http://www.sacrideo.us
Programming is just another word for the Lost Art of Thinking.
the other day. Following through the documentation seemed to all go well
up until the point where I tried to reboot. For some reason, I cannot seem
to get the md* disks recognized by the huge kernels. Normally, my process
is to reboot into the new system using the huge kernels and then break out
an initrd and use the generic kernel from then on, but for some reason, I
can only get RAID to work through the generic kernel, so I had to actually
chroot into the new installation and set everything up for the generic
kernel *before* I rebooted from my initial installation to get everything
working the way that I wanted.
Could someone explain this and maybe suggest what I am doing wrong with
the huge kernel that is not allowing it to work? I am on Slackware64 14.0
with two 750GB disks.
--
Aaron W. Hsu | arc...@sacrideo.us | http://www.sacrideo.us
Programming is just another word for the Lost Art of Thinking.
Grant
Oct 14, 2012, 4:29:06 AM10/14/12
to
On Sun, 14 Oct 2012 00:21:39 -0400, "Aaron W. Hsu" <arc...@sacrideo.us> wrote:
>I was trying to install a RAID-0 softraid installation on Slackware 14.0
>the other day. Following through the documentation seemed to all go well
>up until the point where I tried to reboot. For some reason, I cannot seem
>to get the md* disks recognized by the huge kernels. Normally, my process
>is to reboot into the new system using the huge kernels and then break out
>an initrd and use the generic kernel from then on, but for some reason, I
>can only get RAID to work through the generic kernel, so I had to actually
>chroot into the new installation and set everything up for the generic
>kernel *before* I rebooted from my initial installation to get everything
>working the way that I wanted.
I didn't expect slack64-14.0 to work with RAID6 or RAID10 until I compiled
>I was trying to install a RAID-0 softraid installation on Slackware 14.0
>the other day. Following through the documentation seemed to all go well
>up until the point where I tried to reboot. For some reason, I cannot seem
>to get the md* disks recognized by the huge kernels. Normally, my process
>is to reboot into the new system using the huge kernels and then break out
>an initrd and use the generic kernel from then on, but for some reason, I
>can only get RAID to work through the generic kernel, so I had to actually
>chroot into the new installation and set everything up for the generic
>kernel *before* I rebooted from my initial installation to get everything
>working the way that I wanted.
a custom kernel. Only then did I look for the old RAID10 and RAID 6 arrays.
They were present, though I'd lost the mdadm.conf file, had to use new names
for them.
>
>Could someone explain this and maybe suggest what I am doing wrong with
>the huge kernel that is not allowing it to work? I am on Slackware64 14.0
>with two 750GB disks.
Why RAID0? Striped RAID on its own brings no real benefit, unless you're
>Could someone explain this and maybe suggest what I am doing wrong with
>the huge kernel that is not allowing it to work? I am on Slackware64 14.0
>with two 750GB disks.
catering for lots of concurrent readers?
Sorry no, I know not why slack distro kernels don't do it right, but I
expect that and work around the issue with custom kernel.
Grant.
Helmut Hullen
Oct 14, 2012, 5:09:00 AM10/14/12
to
Hallo, Aaron,
Du meintest am 14.10.12:
> I was trying to install a RAID-0 softraid installation on Slackware
> 14.0
[...]
> Could someone explain this and maybe suggest what I am doing wrong
> with the huge kernel that is not allowing it to work? I am on
> Slackware64 14.0 with two 750GB disks.
It's no good idea to use RAID0 ...
I've just seen the malefits on my btrfs installation, 3 disks with about
8 TByte, configured as RAID0 (data). Worked fine. And then I tried to
make a bootable USB stick via dd - and choosed the wrong machine (via
"putty"). On that wrong machine /dev/sdb was part of the RAID0 cluster.
All 8 TBytes were then unaccesible. On all 3 disks.
Ok - I have backups ...
And I'm back to ext4, and no RAID.
Viele Gruesse
Helmut
"Ubuntu" - an African word, meaning "Slackware is too hard for me".
Du meintest am 14.10.12:
> I was trying to install a RAID-0 softraid installation on Slackware
> 14.0
> Could someone explain this and maybe suggest what I am doing wrong
> with the huge kernel that is not allowing it to work? I am on
> Slackware64 14.0 with two 750GB disks.
I've just seen the malefits on my btrfs installation, 3 disks with about
8 TByte, configured as RAID0 (data). Worked fine. And then I tried to
make a bootable USB stick via dd - and choosed the wrong machine (via
"putty"). On that wrong machine /dev/sdb was part of the RAID0 cluster.
All 8 TBytes were then unaccesible. On all 3 disks.
Ok - I have backups ...
And I'm back to ext4, and no RAID.
Viele Gruesse
Helmut
"Ubuntu" - an African word, meaning "Slackware is too hard for me".
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