* How to get all disk geometry (logical/physical) equal for RAID5
@ 2002-09-07 13:15 Dieter Nützel
2002-09-07 13:47 ` [reiserfs-list] " Dieter Nützel
0 siblings, 1 reply; 3+ messages in thread
From: Dieter Nützel @ 2002-09-07 13:15 UTC (permalink / raw)
To: Neil Brown; +Cc: Chris Mason, Linux RAID List, ReiserFS List
Hello Neil, Chris,
Sorry that I bother you but I'm under some hurry 'cause a school server
crashed and I have to set it up over the weekend, again.
It had double disk fault in RAID5. The second disk show the damage during
RAID5 reconstruction ;-(
So I changed all 4 disks with another brand and put a fifth one as spare in.
hda (the spare) is on the on board VIA 686b controller and show some "bad"
logical numbers so that I get a different partition layout.
hde and hdg are on the on board HPT 370
hdi and hdk are on an additional HPT 370A IDE card
hdb is for installation only
Any chance to change the logical disk layout of hda?
Second to you and Chris:
Is it possible to boot from the mirrored RAID1 partitions (hdX10) with the
current lilo-22.x (SuSE 8.0)? With ReiserFS?
Thank you much!
-Dieter
Festplatte /dev/hdk: 16 Köpfe, 63 Sektoren, 77545 Zylinder
Einheiten: Zylinder mit 1008 * 512 Bytes
Gerät boot. Anfang Ende Blöcke Id Dateisystemtyp
/dev/hdk1 1 14564 7340224+ fd Linux raid autodetect
/dev/hdk2 14565 20806 3145968 fd Linux raid autodetect
/dev/hdk3 20807 20949 72072 fd Linux raid autodetect
/dev/hdk4 20950 77545 28524384 5 Erweiterte
/dev/hdk5 20950 27191 3145936+ fd Linux raid autodetect
/dev/hdk6 27192 41755 7340224+ fd Linux raid autodetect
/dev/hdk7 41756 56319 7340224+ fd Linux raid autodetect
/dev/hdk8 56320 64642 4194760+ fd Linux raid autodetect
/dev/hdk9 64643 72965 4194760+ fd Linux raid autodetect
/dev/hdk10 72966 73006 20632+ 83 Linux
/dev/hdk11 73007 77545 2287624+ 83 Linux
Festplatte /dev/hdi: 16 Köpfe, 63 Sektoren, 77545 Zylinder
Einheiten: Zylinder mit 1008 * 512 Bytes
Gerät boot. Anfang Ende Blöcke Id Dateisystemtyp
/dev/hdi1 1 14564 7340224+ fd Linux raid autodetect
/dev/hdi2 14565 20806 3145968 fd Linux raid autodetect
/dev/hdi3 20807 20949 72072 fd Linux raid autodetect
/dev/hdi4 20950 77545 28524384 5 Erweiterte
/dev/hdi5 20950 27191 3145936+ fd Linux raid autodetect
/dev/hdi6 27192 41755 7340224+ fd Linux raid autodetect
/dev/hdi7 41756 56319 7340224+ fd Linux raid autodetect
/dev/hdi8 56320 64642 4194760+ fd Linux raid autodetect
/dev/hdi9 64643 72965 4194760+ fd Linux raid autodetect
/dev/hdi10 72966 73006 20632+ 83 Linux
/dev/hdi11 73007 77545 2287624+ 83 Linux
Festplatte /dev/hdg: 16 Köpfe, 63 Sektoren, 77545 Zylinder
Einheiten: Zylinder mit 1008 * 512 Bytes
Gerät boot. Anfang Ende Blöcke Id Dateisystemtyp
/dev/hdg1 1 14564 7340224+ fd Linux raid autodetect
/dev/hdg2 14565 20806 3145968 fd Linux raid autodetect
/dev/hdg3 20807 20949 72072 fd Linux raid autodetect
/dev/hdg4 20950 77545 28524384 5 Erweiterte
/dev/hdg5 20950 27191 3145936+ fd Linux raid autodetect
/dev/hdg6 27192 41755 7340224+ fd Linux raid autodetect
/dev/hdg7 41756 56319 7340224+ fd Linux raid autodetect
/dev/hdg8 56320 64642 4194760+ fd Linux raid autodetect
/dev/hdg9 64643 72965 4194760+ fd Linux raid autodetect
/dev/hdg10 72966 73006 20632+ 83 Linux
/dev/hdg11 73007 77545 2287624+ 83 Linux
Festplatte /dev/hde: 16 Köpfe, 63 Sektoren, 77545 Zylinder
Einheiten: Zylinder mit 1008 * 512 Bytes
Gerät boot. Anfang Ende Blöcke Id Dateisystemtyp
/dev/hde1 1 14564 7340224+ fd Linux raid autodetect
/dev/hde2 14565 20806 3145968 fd Linux raid autodetect
/dev/hde3 20807 20949 72072 fd Linux raid autodetect
/dev/hde4 20950 77545 28524384 5 Erweiterte
/dev/hde5 20950 27191 3145936+ fd Linux raid autodetect
/dev/hde6 27192 41755 7340224+ fd Linux raid autodetect
/dev/hde7 41756 56319 7340224+ fd Linux raid autodetect
/dev/hde8 56320 64642 4194760+ fd Linux raid autodetect
/dev/hde9 64643 72965 4194760+ fd Linux raid autodetect
/dev/hde10 72966 73006 20632+ 83 Linux
/dev/hde11 73007 77545 2287624+ 83 Linux
Festplatte /dev/hda: 255 Köpfe, 63 Sektoren, 4865 Zylinder
Einheiten: Zylinder mit 16065 * 512 Bytes
Gerät boot. Anfang Ende Blöcke Id Dateisystemtyp
/dev/hda2 * 1 4865 39078081 83 Linux
Festplatte /dev/hdb: 128 Köpfe, 63 Sektoren, 620 Zylinder
Einheiten: Zylinder mit 8064 * 512 Bytes
Gerät boot. Anfang Ende Blöcke Id Dateisystemtyp
/dev/hdb1 1 620 2499808+ 83 Linux
--
Dieter Nützel
Graduate Student, Computer Science
University of Hamburg
Department of Computer Science
@home: Dieter.Nuetzel at hamburg.de (replace at with @)
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [reiserfs-list] How to get all disk geometry (logical/physical) equal for RAID5
2002-09-07 13:15 How to get all disk geometry (logical/physical) equal for RAID5 Dieter Nützel
@ 2002-09-07 13:47 ` Dieter Nützel
2002-09-07 16:37 ` Oleg Drokin
0 siblings, 1 reply; 3+ messages in thread
From: Dieter Nützel @ 2002-09-07 13:47 UTC (permalink / raw)
To: Neil Brown; +Cc: Chris Mason, Linux RAID List, ReiserFS List
On Saturday 07 September 2002 15:15, Dieter Nützel wrote:
> Hello Neil, Chris,
>
> Sorry that I bother you but I'm under some hurry 'cause a school server
> crashed and I have to set it up over the weekend, again.
> It had double disk fault in RAID5. The second disk show the damage during
> RAID5 reconstruction ;-(
> So I changed all 4 disks with another brand and put a fifth one as spare
> in.
>
> hda (the spare) is on the on board VIA 686b controller and show some "bad"
> logical numbers so that I get a different partition layout.
>
> hde and hdg are on the on board HPT 370
> hdi and hdk are on an additional HPT 370A IDE card
>
> hdb is for installation only
>
> Any chance to change the logical disk layout of hda?
>
> Second to you and Chris:
> Is it possible to boot from the mirrored RAID1 partitions (hdX10) with the
> current lilo-22.x (SuSE 8.0)? With ReiserFS?
Addition:
Should I better skip all the partitions on the volumes and stay only with the
"raw" devices (maybe only hdX1) and create the partitions on the RAID5 array
(something like md0pXXX and maybe md1 for a RAID1 boot device (the lilo
thing))?
Is ReiserFS usable on such a system, too?
On my former "layout" it works so far and had for nearly a year.
My cylinder layout and boot question stays.
Which scheme should I use when LVM steps in?
LVM -> RAID5 -> partitions
or
RAID5 -> LVM -> partitions
Sorry for the "little" OT.
Regards,
Dieter
--
Dieter Nützel
Graduate Student, Computer Science
University of Hamburg
Department of Computer Science
@home: Dieter.Nuetzel at hamburg.de (replace at with @)
-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How to get all disk geometry (logical/physical) equal for RAID5
2002-09-07 13:47 ` [reiserfs-list] " Dieter Nützel
@ 2002-09-07 16:37 ` Oleg Drokin
0 siblings, 0 replies; 3+ messages in thread
From: Oleg Drokin @ 2002-09-07 16:37 UTC (permalink / raw)
To: Dieter N?tzel; +Cc: Neil Brown, Chris Mason, Linux RAID List, ReiserFS List
Hello!
On Sat, Sep 07, 2002 at 03:47:59PM +0200, Dieter N?tzel wrote:
> > hda (the spare) is on the on board VIA 686b controller and show some "bad"
> > logical numbers so that I get a different partition layout.
Different from what?
You can use dd to copy partition table with right layout.
Also 1st IDE disk is usually threated a bit different by partition code in order
to be compatible with BIOS boot logic. If that's your problem,
you can specify right geometry from "kernel command line" (append= in lilo)
> > Second to you and Chris:
> > Is it possible to boot from the mirrored RAID1 partitions (hdX10) with the
> > current lilo-22.x (SuSE 8.0)? With ReiserFS?
Should be no problem.
Lilo does not depend on filesystem at all, it only records disk block numbers.
It is unclear if you will be able to boot if first disk of mirrored set will
fail, because you usually have lilo only on one of the disks, but if lilo is
located on 3rd disk, then this will only work if you remove failed raid1 disk
and second disk will get same bios id as first one had. (note I am not quite
sure here, but it shold work this way. Also there might be a way to tell
lilo about RAID1 setups but I've never saw this myself).
> Is ReiserFS usable on such a system, too?
Reiserfs is usable on any block device that correctly works from reiserfs
perspective. (e.g. loop devices over samba do not work).
Bye,
Oleg
^ permalink raw reply [flat|nested] 3+ messages in thread
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2002-09-07 13:15 How to get all disk geometry (logical/physical) equal for RAID5 Dieter Nützel
2002-09-07 13:47 ` [reiserfs-list] " Dieter Nützel
2002-09-07 16:37 ` Oleg Drokin
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