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Moving ext3-formatted disks from x86 to sparc ?
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Magic Michael
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PostPosted: Wed May 18, 2005 8:33 pm    Post subject: Moving ext3-formatted disks from x86 to sparc ? Reply with quote

Hi all,
in my fileserver I want to replace the pentium3-board with an UltraAXi-board, an Ultra 10 clone board with scsi onboard, no IDE. My data disks (2x 200GB, 2x 160GB) are connected to a Promise 100TX2 (non raid-)IDE-controller, which has to live in that sparc-board, too. Should I expect any trouble with the data disks, because they were partitioned and formatted with x86-Linux and now have to run with sparc-Linux ? Or is it indeed compatible and my data safe ? Booting from the promise controller is not needed (and not possible on sparc, I know).
I know I have to re-install my Gentoo on the scsi-system-disk.

Thanks
Michael
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msalerno
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PostPosted: Wed May 18, 2005 9:03 pm    Post subject: Reply with quote

Your data should be intact. The filesystem is independent of the system architecture.
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ciaranm
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PostPosted: Fri May 20, 2005 7:36 am    Post subject: Reply with quote

The filesystem is architecture independent. However, x86 systems use DOS disclabels whereas sparc systems use Sun disclabels, so you won't be able to read the partition table unless you tinker with your kernel config.
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Magic Michael
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PostPosted: Sat May 21, 2005 6:58 am    Post subject: Reply with quote

Hmm, what do you mean with "tinker with your kernel config", ciaranm ? That sounds like I have to do more than just check
CONFIG_MSDOS_PARTITION=y
CONFIG_SUN_PARTITION=y
in my kernel config (?)
Any hints ?
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ciaranm
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PostPosted: Sat May 21, 2005 7:03 am    Post subject: Reply with quote

Magic Michael wrote:
Hmm, what do you mean with "tinker with your kernel config", ciaranm ? That sounds like I have to do more than just check
CONFIG_MSDOS_PARTITION=y
CONFIG_SUN_PARTITION=y
in my kernel config (?)
Any hints ?

Naah, that should do. CONFIG_MSDOS_PARTITION wasn't on by default at one point, can't remember whether that's still the case.
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rouben
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PostPosted: Wed May 25, 2005 3:41 am    Post subject: Reply with quote

What about endianness? AFAIK SPARC is big-endian and x86 is little-endian.
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ciaranm
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PostPosted: Wed May 25, 2005 5:50 am    Post subject: Reply with quote

rouben wrote:
What about endianness? AFAIK SPARC is big-endian and x86 is little-endian.

The only filesystems with endianness bugs are ricer4 and xfs.
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Toady
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PostPosted: Fri May 27, 2005 7:58 am    Post subject: Reply with quote

I dont think there will be any problems, when I was starting out with gentoo on my SS20's I was very new to sun hardware and accidentally used fdisk to wipe the partition table and write a DOS one (as you can do on sun boxes) and installed and ran the system fine with no problems.

I would suggest that it wont be a problem ;) but of corse you should back up your data before you start (as it says on every good manual)
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