Messages in this thread | | | From | Richard Weinberger <> | Date | Wed, 20 Jun 2018 07:38:35 +0200 | Subject | Re: [PATCH] Add quick erase format option |
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On Mon, Aug 9, 2010 at 10:52 AM, Stefani Seibold <stefani@seibold.net> wrote: > Am Montag, den 09.08.2010, 09:37 +0100 schrieb David Woodhouse: >> On Mon, 2010-08-09 at 09:25 +0100, stefani@seibold.net wrote: >> > From: Stefani Seibold <stefani@seibold.net> >> > >> > This patch add a quick format option which skips erasing of already erased >> > flash blocks. This is useful for first time production environments where >> > the flash arrived erased. >> > >> > Signed-off-by: Stefani Seibold <stefani@seibold.net> >> >> This scares me, given the lengths we had to go to in JFFS2 to cope with >> blocks which *look* like they're erased, but which actually start losing >> data as soon as you start writing to them because the erase didn't >> complete. >> > > I know the drawback. This is why it is only an option which must be > enabled. And in most use cases there is a subsequent ubimkvol, which > will fail if the flash is not correct initialized. > > Flash are normally delivered erased. So this save in our production > environment (Nokia Siemens Networks) about 5 minutes per device (256 MB > NOR CFI Flash). > > The old JFFS2 was very fast to install the first time on a flash, it was > only a simple mount of the MTD partition. > > Which the quick format option i have now only a slightly first time > installation overhead compared to JFFS2. Without this option the > overhead is more than 5 minutes.
This mail arrived now?! David, was it delayed by mailman for 8 years?
-- Thanks, //richard
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