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TheCowSaysMoo
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Joined: 27 May 2006
Posts: 5

PostPosted: Sat Jun 02, 2007 10:56 am    Post subject: Fdisk and JFS Reply with quote

Hi everybody.

I just recently bought myself a new Sata harddisk & formatted it using the jfs filesysteem & cfdisk. It choose a default filesystem type for me (swap/solaris) and afterwards i formatted it with the command indicated in the gentoo manual (mkfs.jfs /dev/sda1). Now it shows up on df as JFS, but on fdisk -l still as solaris/swap. Is this normal? (In fstab it is being mounted as jfs)

Thanks :)
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54300
Location: 56N 3W

PostPosted: Sat Jun 02, 2007 11:14 am    Post subject: Reply with quote

TheCowSaysMoo,

Thats perfectly normal. The filesystem type byte in the partiton table is not set to match the the actual filesystem on the partition unless you do it manually with fdisk. In most cases, it doesn't matter, since Linux does not use this information to mount the filesystem.

When does it matter?
For partitions used to create raid sets, when the kernel needs to know to start the raid set before it can mount the file system the raid set contains.
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NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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