Help Root Raid

Help Root Raid

[Pankaj Agarwal]

Hi,

I need your help regarding root raid. I have a root raid implemented server
and it not booting anymore. I tried to use that harddisc as secondary hard
disk to on of my other linux installation..so i can take a backup of files.
The other installation has raid precompiled....as in booting process it
checks for raid arays and at shutdown it gives messages regarding md
devices. however it doesn't show any dev in lsdev or /proc/mdstat. My
problem is when i try to mount it using "mount -t ext2 /dev/md0 /mnt/hdc1"
it gives me error as "wronf fs, bad option, bad superblock on
/dev/md0.........................(aren't you trying to mount a block device
on a logical device)". Kindly show me the way to mount the filesystem.

thanks and regards,

Pankaj Agarwal

Re: Help Root Raid

[David Martínez Moreno]

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Hash: SHA1

El Jueves, 19 de Agosto de 2004 11:09, Pankaj Agarwal escribió:
> Hi,
>
> I need your help regarding root raid. I have a root raid implemented server
> and it not booting anymore. I tried to use that harddisc as secondary hard
> disk to on of my other linux installation..so i can take a backup of files.
> The other installation has raid precompiled....as in booting process it
> checks for raid arays and at shutdown it gives messages regarding md
> devices. however it doesn't show any dev in lsdev or /proc/mdstat. My
> problem is when i try to mount it using "mount -t ext2 /dev/md0 /mnt/hdc1"
> it gives me error as "wronf fs, bad option, bad superblock on
> /dev/md0.........................(aren't you trying to mount a block device
> on a logical device)". Kindly show me the way to mount the filesystem.

	Hello, Pankaj.

	Probably you are not starting your RAID. You can check it with 
cat /proc/mdstat. If not, well, you can mark the partitions forming the RAID 
with persistent superblock (fd partition type in fdisk)) for starting 
automatically the RAID on boot, or fill in the /etc/raidtab file with the 
values of your current RAID and start it manually (see raidtools2 package).

	Also you can read RAID-HOWTO for unvaluable information.

	Regards,


		Ender.
- -- 
What was that, honey? It was bad. It had no fire, no energy, no nothing.
 So tomorrow from 5 to 7 will you PLEASE act like you have more than a
 two word vocabulary. It must be green.
		-- DJ Ruby Rhod (The Fifth Element).
- --
Servicios de red - Network services
RedIRIS - Spanish Academic Network for Research and Development
Red.es - Madrid (Spain)
Tlf (+34) 91.212.76.25
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Re: Help Root Raid

[Pankaj Agarwal]

Hi Ender,

this isn't the case...however i tried by changing the 83 to FD but it
doesn't worked.

its already enabled and the kernel is reading these partitions as well....i
guess because of these messages during bootup and shutdown....

Part of BOOTUP message ...
"
autodetecting Raid Arrays
autorun...
...autorun DONE
"

Part of shutdown message ....
"
md recovery thread got woken
md recovery thread finished
mdrecoveryd(7) flushing signals
Stopping all md devices.
"
Hope it helps you in helping me further.

thanks and regards,

Pankaj

----- Original Message -----
From: "David Martínez Moreno" <ender@debian.org>
To: <linux-kernel@vger.kernel.org>
Sent: Thursday, August 19, 2004 2:57 PM
Subject: Re: Help Root Raid


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

El Jueves, 19 de Agosto de 2004 11:09, Pankaj Agarwal escribió:
> Hi,
>
> I need your help regarding root raid. I have a root raid implemented
server
> and it not booting anymore. I tried to use that harddisc as secondary hard
> disk to on of my other linux installation..so i can take a backup of
files.
> The other installation has raid precompiled....as in booting process it
> checks for raid arays and at shutdown it gives messages regarding md
> devices. however it doesn't show any dev in lsdev or /proc/mdstat. My
> problem is when i try to mount it using "mount -t ext2 /dev/md0 /mnt/hdc1"
> it gives me error as "wronf fs, bad option, bad superblock on
> /dev/md0.........................(aren't you trying to mount a block
device
> on a logical device)". Kindly show me the way to mount the filesystem.

Hello, Pankaj.

Probably you are not starting your RAID. You can check it with
cat /proc/mdstat. If not, well, you can mark the partitions forming the RAID
with persistent superblock (fd partition type in fdisk)) for starting
automatically the RAID on boot, or fill in the /etc/raidtab file with the
values of your current RAID and start it manually (see raidtools2 package).

Also you can read RAID-HOWTO for unvaluable information.

Regards,


Ender.
- --
What was that, honey? It was bad. It had no fire, no energy, no nothing.
 So tomorrow from 5 to 7 will you PLEASE act like you have more than a
 two word vocabulary. It must be green.
-- DJ Ruby Rhod (The Fifth Element).
- --
Servicios de red - Network services
RedIRIS - Spanish Academic Network for Research and Development
Red.es - Madrid (Spain)
Tlf (+34) 91.212.76.25
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Re: Help Root Raid

[David Martínez Moreno]

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Hash: SHA1

El Sábado, 21 de Agosto de 2004 18:37, Pankaj Agarwal escribió:
> Hi Ender,
>
> this isn't the case...however i tried by changing the 83 to FD but it
> doesn't worked.
>
> its already enabled and the kernel is reading these partitions as well....i
> guess because of these messages during bootup and shutdown....
>
> Part of BOOTUP message ...
> "
> autodetecting Raid Arrays
> autorun...
> ...autorun DONE
> "
>
> Part of shutdown message ....
> "
> md recovery thread got woken
> md recovery thread finished
> mdrecoveryd(7) flushing signals
> Stopping all md devices.
> "
> Hope it helps you in helping me further.

	Hello, Pankaj. Could you please send us a copy of your dmesg output? That is 
the first thing you must do in order to diagnose problems.

	Thanks,


		Ender.
- -- 
Network engineer
Debian Developer
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Re: Help Root Raid

[Pankaj Agarwal]

[-- Attachment #1: Type: text/plain, Size: 1515 bytes --]

Hi Ender,

Thanks for looking into it and for your help. I am hereby enclosing the
output of dmesg along with this mail. hdc(samsung ide) is the one i want to
retrieve data from.

thanks and regards,

Pankaj Agarwal

----- Original Message -----
From: "David Martínez Moreno" <ender@debian.org>
To: "Pankaj Agarwal" <pankaj@pnpexports.com>
Cc: <linux-kernel@vger.kernel.org>; <ender@debian.org>
Sent: Thursday, August 26, 2004 5:00 AM
Subject: Re: Help Root Raid


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

El Sábado, 21 de Agosto de 2004 18:37, Pankaj Agarwal escribió:
> Hi Ender,
>
> this isn't the case...however i tried by changing the 83 to FD but it
> doesn't worked.
>
> its already enabled and the kernel is reading these partitions as
well....i
> guess because of these messages during bootup and shutdown....
>
> Part of BOOTUP message ...
> "
> autodetecting Raid Arrays
> autorun...
> ...autorun DONE
> "
>
> Part of shutdown message ....
> "
> md recovery thread got woken
> md recovery thread finished
> mdrecoveryd(7) flushing signals
> Stopping all md devices.
> "
> Hope it helps you in helping me further.

Hello, Pankaj. Could you please send us a copy of your dmesg output? That is
the first thing you must do in order to diagnose problems.

Thanks,


Ender.
- --
Network engineer
Debian Developer
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[-- Attachment #2: dmesg.txt --]
[-- Type: text/plain, Size: 3210 bytes --]

Linux version 2.2.14-12smp (root@porky.devel.redhat.com) (gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 SMP Tue Apr 25 12:58:06 EDT 2000
mapped APIC to ffffe000 (00295000)
Detected 500979898 Hz processor.
Console: colour VGA+ 80x25
Calibrating delay loop... 499.71 BogoMIPS
Memory: 256428k/261056k available (1120k kernel code, 424k reserved, 3008k data, 76k init, 0k bigmem)
Dentry hash table entries: 262144 (order 9, 2048k)
Buffer cache hash table entries: 262144 (order 8, 1024k)
Page cache hash table entries: 65536 (order 6, 256k)
VFS: Diskquotas version dquot_6.4.0 initialized
Checking 386/387 coupling... OK, FPU using exception 16 error reporting.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.35a (19990819) Richard Gooch (rgooch@atnf.csiro.au)
per-CPU timeslice cutoff: 25.04 usecs.
CPU0: Intel Celeron (Mendocino) stepping 05
SMP motherboard not detected. Using dummy APIC emulation.
PCI: PCI BIOS revision 2.10 entry at 0xfb0f0
PCI: Using configuration type 1
PCI: Probing PCI hardware
Linux NET4.0 for Linux 2.2
Based upon Swansea University Computer Society NET3.039
NET4: Unix domain sockets 1.0 for Linux NET4.0.
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
TCP: Hash tables configured (ehash 262144 bhash 65536)
Initializing RT netlink socket
Starting kswapd v 1.5 
Detected PS/2 Mouse Port.
Serial driver version 4.27 with MANY_PORTS MULTIPORT SHARE_IRQ enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS01 at 0x02f8 (irq = 3) is a 16550A
pty: 256 Unix98 ptys configured
Real Time Clock Driver v1.09
RAM disk driver initialized:  16 RAM disks of 4096K size
PCI_IDE: unknown IDE controller on PCI bus 00 device f9, VID=8086, DID=2421
PCI_IDE: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
    ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:pio
hda: ST34321A, ATA DISK drive
hdb: SAMSUNG CD-ROM SC-152C, ATAPI CDROM drive
hdc: SAMSUNG WA32163A, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: ST34321A, 4103MB w/128kB Cache, CHS=523/255/63
hdc: SAMSUNG WA32163A, 2062MB w/128kB Cache, CHS=4190/16/63
hdb: ATAPI 52X CD-ROM drive, 128kB Cache
Uniform CDROM driver Revision: 2.56
Floppy drive(s): fd0 is 1.44M
FDC 0 is a post-1991 82077
md driver 0.90.0 MAX_MD_DEVS=256, MAX_REAL=12
raid5: measuring checksumming speed
raid5: MMX detected, trying high-speed MMX checksum routines
   pII_mmx   :  1122.426 MB/sec
   p5_mmx    :  1171.956 MB/sec
   8regs     :   860.298 MB/sec
   32regs    :   505.587 MB/sec
using fastest function: p5_mmx (1171.956 MB/sec)
scsi : 0 hosts.
scsi : detected total.
md.c: sizeof(mdp_super_t) = 4096
Partition check:
 hda:hda: set_multmode: status=0x51 { DriveReady SeekComplete Error }
hda: set_multmode: error=0x04 { DriveStatusError }
 hda1 hda2 < hda5 hda6 >
 hdc: hdc1 hdc2 < hdc5 hdc6 hdc7 hdc8 hdc9 >
autodetecting RAID arrays
autorun ...
... autorun DONE.
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 76k freed
Adding Swap: 514040k swap-space (priority -1)

Re: Help Root Raid

[David Martínez Moreno]

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Hash: SHA1

El Jueves, 26 de Agosto de 2004 07:17, Pankaj Agarwal escribió:
> Hi Ender,
>
> Thanks for looking into it and for your help. I am hereby enclosing the
> output of dmesg along with this mail. hdc(samsung ide) is the one i want to
> retrieve data from.

 Ooohhhhh...I think that I know what is your problem:

Linux version 2.2.14-12smp (root@porky.devel.redhat.com) (gcc version 
egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #1 SMP Tue Apr 25 12:58:06 
EDT 2000

 Back in 2.2.x times, RAID was not autodetected (if I recall correctly). So 
your old Linux is unable to start the RAID.

 Get a miniKnoppix or some other simple modern rescue system (any 
RH/SuSE/Debian/... installation CD will do the trick), and boot with it. It 
would be the nicest way of recovering your data.

 Regards,


  Ender.
- -- 
Network engineer
Debian Developer
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