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Re: [Newbie] Few Queries related to JFFS2
On Fri, 2004-12-03 at 09:10, S Ashok wrote:
> Hi all,
> I am working on embedded project where we are using
> root filesystem with jffs2 filesystem type( 4MB NOR
> FLASH). I have few queries related to it.
> 1. Is the erase block size specified while creating jffs2
> image should be same as that of flash block size ?
In general, yes.
> 2. I have read from the mailing list that free space has to
> be left for proper functioning of GC ( hideing them from
> userspace ). Is there any number ( one or two erase block
> ) ?
JFFS2 figures this out when it mounts. The old hard coded method used 5
eraseblocks. To be safe, I would recommend starting with 5 free.
IIRC, JFFS2 will just mount the filesystem read-only if it doesn't have
enough free eraseblocks.
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