Re: Can't mount RAID 5: "Can't find ext3 filesystem"
On Wed, Feb 25, 2009 at 8:34 AM, Alex Samad <alex@samad.com.au> wrote:
> On Wed, Feb 25, 2009 at 08:20:57AM +0100, Jose Legido wrote:
>> On Wed, Feb 25, 2009 at 3:33 AM, Alex Samad <alex@samad.com.au> wrote:
>> > On Tue, Feb 24, 2009 at 07:29:12PM -0500, Jose Legido wrote:
>> >> On Tue, Feb 24, 2009 at 7:09 PM, Alex Samad <alex@samad.com.au> wrote:
>> >> > On Tue, Feb 24, 2009 at 06:53:54PM -0500, Jose Legido wrote:
>> >> >> Hello!
>> >> >> I have one IDE hard disk hda with the system (debian testing)
>> >> >> I have a RAID5 with devices sda,b,c,d. My raid works fine.
>> >> >> One day, I reboot and my hda is converted to sda.
>> >> >
>> >> > you upgraded your kernel ? at some point in time the kernel started to
>> >> > address sata devices as sd instead of the old way of hd.
>> >>
>> >> No, I don't upgrade my kernel.
>> >
>> > anything else change
>> >
>> >
>> >> My changes are made in /boot/initrd.img-2.6.26-1-686
>> >>
>> >> >
>> >> > start using LABEL or UUID instead of device paths like /dev/hda1. check
>> >> > /etc/fstab and your grub menu if you use grub of lilo
>> >>
>> >> I change this later
>> >>
>> >> >
>> >> > as for the raid, check out the /etc/mdadm/mdadm.conf, make sure your md
>> >> > devices are not defined with device, but with UUID's
>> >> >
>> >> My mdadm.conf
>> >> ARRAY /dev/md0 level=raid5 num-devices=4
>> >> UUID=0768075c:5ca2c100:d4d8cd15:f227f389
>> >>
>> >> How can I know md0 filesystem?
>> >
>> > what i would do is
>> >
>> > reboot the system but with the kernel options init=/bin/bash (you can
>> > edit a grub stanza at boot up time so no need to make it permanent)
>> >
>> > then I would have a look at the system from the kernels perspective see
>> > what drives are available hd's or sd's. work out the problem from there.
>> >
>> > Then look at the raid device, I would try and assemble them (not
>> > recreate them) and see what the problem is, have a look at dmesg and
>> > syslog.
>>
>>
>> Too late.... I recreate, there are any diference in assemble and
>> recreate? Excuse me my ignorance....
>
> recreate creates a new md device - blank, although there are some
> options to make a create look like a assemble.
>
> assemble is what the system does when it put the device together to make
> the mdX device
If I recreate my raid I lost all my data? Can I recovery my data?
>
>
>>
>> Thanks!
>>
>> >
>> > I would work it from there.
>> >
>> >
>> >>
>> >>
>> >> > Alex
>> >> >
>> >> >> I loaded an old kernel. Know, when I try to mount my RAID i get this error:
>> >> >> # mount -t ext3 /dev/md0 /mnt/raid/
>> >> >> VFS: Can't find ext3 filesystem on dev md0.
>> >> >>
>> >> >> What can I do?
>> >> >>
>> >> >> Thanks!!!!
>> >> >>
>> >> >>
>> >> >> --
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>> >> >>
>> >> >>
>> >> >
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>> >> > - George W. Bush
>> >> > 06/18/2003
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>> >> > TjYAoP1vdDGu/KifXvReNjGEHd4BPKvp
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>> >>
>> >>
>> >> --
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>> >>
>> >
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>>
>>
>> --
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>>
>
> --
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