Re: Question about using FAT32 with ataraid and Promise FT100

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Doesn't work that way. If there are inconsistencies between the two disks in
the RAID1 array, it's handled by the RAID controller, not by the fsck.


----- Original Message -----
From: "Michael Wright" <mikewright@xxxxxxxxxxxxxx>
To: <ataraid-list@xxxxxxxxxx>
Sent: Monday, August 19, 2002 5:23 AM
Subject: Question about using FAT32 with ataraid and Promise FT100


> Hey all,
>
> If I have the following setup:
>
> - Kernel 2.4.18
> - 2 x Western Digital 80GB IDE Drives
> - RAID 1 setup through Promise BIOS.
> - ataraid.o and pdcraid.o loaded at startup.
> - Formatted /dev/ataraid/d0p0 as FAT32.
> - Mounted /dev/ataraid/d0p0 on /mnt/raid
>
> Now here is the scenario:
>
> 1. A file is created on /mnt/raid (say "cp /var/log/messages /mnt/raid")
> 2. The power is switched off on the box a point such that the FATs (File
> Allocation Tables) are out of sync.
>
> My question is:
> How can DOSFSCK fix the raid array (/dev/ataraid/d0p0)?
>
> Since the FATS are out of sync and that reads are balanced across the
> disks, when dosfsck try's to read the FATs to find out what state they
> are in, it will get different FATs each time it is run. This could cause
> it to further stuff-up the FATs.
>
> Has anyone had any experience with this?
>
> Mike.
>
>
>
>
> _______________________________________________
> 
> Ataraid-list@xxxxxxxxxx
> https://listman.redhat.com/mailman/listinfo/ataraid-list
>





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