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Old 06-18-2005, 03:48 PM   #1
Registered: Jun 2005
Location: Obera, Argentina
Distribution: OpenSuse 10.3, Debian 4.0, Debian 3.1
Posts: 37

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mk2efs ext3 block count differs on same partition size


I've 2 ata disk which are equal (Maxtor DiamondMax Plus 9 120M) which have same C/H/S in linux (even I have to boot one with explicitly CHS if not one has 10011/255/64, 39420/16/255).
They have exactly the same partitions, but if I create a ext 3 fs df doesn't report the same
size (124 blocks differences of 1024k). If I see at the superblock (tune2fs -l fs) block count differs 31 blocks of 2094 which is exactly this difference and Reserved block count differs 2 block. Why this?

I want to use raid level 1 with md driver and my system freeze by copy large files.

Any idea?

Old 06-29-2005, 09:23 AM   #2
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Registered: Jan 2001
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They could have been formatted slighty different perhaps. When I create a raid array and need to copy the partitions to be exact from one drive to the other, I always do a:

/sbin/sfdisk /dev/hdX -f /dev/hdX

Where the X is the corresponding drive.. the first one is the source drive, second one is the drive I want the partition layout copied to..


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