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Date: Mon, 11 Jun 2007 13:53:00 +0200 From: Tomasz Chmielewski <mangoo@...g.org> To: LKML <linux-kernel@...r.kernel.org> Cc: maxdamage@...din.ro Subject: Re: ext2 on flash memory Eduard-Gabriel Munteanu wrote: (...) > Your USB pendrive will wear faster if you use an inappropriate > filesystem. Such filesystems require frequent writes and change their > internal state often. > > This could be alleviated by COWing the filesystem somehow and flushing > writes when you're finished. But the modifications will be lost if > crashes occur. The filesystem structures will still change a lot and > require big writes to update it. > > Really, why don't you try a more suitable fs for your pendrive, one that > changes itself less than usual fs's? Hmm, are there any fs (read+write) alternatives for pendrives? jffs2 only works on mtd devices, and that excludes pendrives, which are block devices. I know LogFS will work with block devices one day, but currently, it doesn't (and is not in the kernel yet as well). Also, ext2 provides a nice feature other filesystems lack: xip. Especially, if a pendrive is used as a rootfs for a small device. -- Tomasz Chmielewski http://wpkg.org - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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