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Date: Mon, 14 May 2007 16:28:35 -0400 From: Rob Landley <rob@...dley.net> To: Dave Jones <davej@...hat.com> Cc: Linux Kernel <linux-kernel@...r.kernel.org> Subject: Re: tracking down disk spinups. On Monday 14 May 2007 2:57 pm, Dave Jones wrote: > Why did the kernel ignore what I told it to do ? > I'm sure it thinks it knows better than me for a reason, but > I'd like to know what it is. Remount doesn't switch filesystem drivers, it tells the existing filesystem driver to accept new flags and/or a new option string. To switch drivers you have to umount the old sucker and mount the new one. (The idea of handing off consistent cache data from one mounted filesystem driver to another... Ouch.) Most filesystem drivers aren't compatible with each other anyway. Sounds like what you really want to do is put the ext3 driver into "ext2 mode", and stop journaling. Many people have wanted this over the years, but alas our dream of "one darn driver for the ext# family" got squashed years ago because people wanted two different codebases for the same filesystem that could diverge, require the same bugs to be fixed twice, become incompatible... Rob - 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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