From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from imap.gmx.net ([213.165.64.20] helo=mail.gmx.net) by canuck.infradead.org with smtp (Exim 4.42 #1 (Red Hat Linux)) id 1CAzNW-0006A9-1p for linux-mtd@lists.infradead.org; Fri, 24 Sep 2004 19:21:27 -0400 Message-ID: <4154ABF8.4090203@gmx.de> Date: Sat, 25 Sep 2004 01:21:28 +0200 From: Arik Funke MIME-Version: 1.0 To: linux-mtd@lists.infradead.org References: <41546333.50102@gmx.de> <20040924191930.965AD60A7@blood.actrix.co.nz> In-Reply-To: <20040924191930.965AD60A7@blood.actrix.co.nz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: i386 Linux on USB pen drive List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Charles Manning wrote: | Most likely, IMHO, these devices will be using a block swapping strategy like | that used in SmartMedia. This does not do explicite wear levelling, but the | block management does effect wear levelling. | | The biggest source of problems with these devices, IMHO, is FAT corruption. I | see you've taken steps too get rid of that. | | The flash file systems like JFFSx and YAFFS are really suited to raw flash | (SmartMedia and XD cards and soldered down chips) , not USB Mass storage | devices (which look like hard disks). Dave might not share my opinion on this. If I understood you correctly I have done everything right without even knowing about the possible technical traps? I do not need to worry about dying sectors, etc. and ext3 was the right choice? Or should I chose a journaling filesystem? (the system will run as minimal communication server) As there seems to be extensibe knowledge here about linux on flash devices, two other questions: 1. Is it correct to assume that systems on flash devices need to run without swap partitions? (due to frequent writing on these) 2. Is there any easy advice which parts of the directory structure should better not be mounted on the flash? Or in which directories in the linux structure will typically occur frequent write accesses? (E.g. log-files?) Is there maybe a HOWTO or anything discussing linux on flash in general? ~ I guess these are fairly typical questions... Cheers, Arik -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (MingW32) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBVKv4//PXyz2NiW8RAiSEAJ0RVMiYdN9gJzrskwX/xputQYhabwCfePZQ QvOQ2jkuDsqcs1z5hk9lk4o= =3JNo -----END PGP SIGNATURE-----