Bug 5607 - Installer doesn't grok soft raid partitions
Summary: Installer doesn't grok soft raid partitions
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: installer
Version: 6.1
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Jay Turner
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 1999-10-05 22:45 UTC by Veillard, Daniel
Modified: 2015-01-07 23:38 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 1999-12-02 15:49:55 UTC

Attachments (Terms of Use)

Description Veillard, Daniel 1999-10-05 22:45:31 UTC
I got error messages due to the installer being unable to
mount /dev/md0

Comment 1 Jay Turner 1999-10-20 19:37:59 UTC
You got this on Intel (i386) with the final release of the installer
code??  That is pretty weird.  We are having no problems here in the
test lab setting up RAID partitions during the install and then
installing to them.  Send me more details about this failure.

Comment 2 Jay Turner 1999-10-22 18:46:59 UTC
*** Bug 5786 has been marked as a duplicate of this bug. ***

We have a Red Hat 6.0 system (installed with a customized
red hat 6.0 installer) which has been installed on
Linux RAID1 partitions. The box has the following

/dev/md0: root filesystem consisting of sda1 and sdb1
/dev/md1: swap partition consisting of sda2 and sdb2

Raid version is Linux 2.2.10+RAID 19990724. RAID partitions
have persistent superblock (autodetectable, 0xfd).

We boot the system up always from a diskette (diskette has
2.2.10+RAID19990724-kernel with rdev /dev/md0).

Now we are about to upgrade this test system to Red Hat 6.1.
This message is to report you about some problems which
we ran to when trying to upgrade the system described above:

Problem #1:

BOOT kernel (on the installation diskette) does not have
RAID autodetection enabled. I think it makes sense to
enable autodetection. I am not sure that it helps - I am
not sure if Linux kernel runs autodetection again after
the red hat installer has loaded appropriate SCSI modules.

Well, I could work around this problem by putting my
own custom kernel to the boot diskette. The custom kernel
has autodetection, raid1 and scsi driver (to make things
sure) all statically linked in.

Problem #2:

Red Hat installer does not find existing installation
on md0. It seems that it only tries to find the existing
installation from sda, sdb, ... devices.

So, by fixing the problem number #2 you could make
upgrading a raid system relatively easy! (at maximum, user
would have to supply a custom kernel to boot diskette)

And fixing problem #1 (if it gets fixed only by enabling one
autodetect-option) would not increase kernel size
dramatically so it would still fit on the boot diskette ;)

Comment 3 Jay Turner 1999-12-02 15:49:59 UTC
The 6.1 installer is not able to upgrade existing RAID partitions, and therefore
the errors that you are getting.  The next release will have the functionality
to upgrade in place RAID partitions.

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