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From: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
To: Richard Weinberger <richard.weinberger@gmail.com>
Cc: Pintu Agarwal <pintu.ping@gmail.com>,
	Richard Weinberger <richard@nod.at>,
	Kernelnewbies <kernelnewbies@kernelnewbies.org>,
	Greg KH <greg@kroah.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-mtd <linux-mtd@lists.infradead.org>,
	Sean Nyekjaer <sean@geanix.com>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Phillip Lougher <phillip@squashfs.org.uk>
Subject: Re: MTD: How to get actual image size from MTD partition
Date: Thu, 29 Jul 2021 08:17:53 -0300	[thread overview]
Message-ID: <CAAEAJfCY+X-G=7Oe9NqrJ4yQZ29DBA78jOFAX44GD0g6=s7qhg@mail.gmail.com> (raw)
In-Reply-To: <CAFLxGvywv29u6DJZrJxnJJmUDSQ4xpbT0u5LNKY1uGKyQom+WA@mail.gmail.com>

Hi Richard,

On Tue, 27 Jul 2021 at 18:16, Richard Weinberger
<richard.weinberger@gmail.com> wrote:
>
> On Thu, Jul 22, 2021 at 1:11 PM Pintu Agarwal <pintu.ping@gmail.com> wrote:
> >
> > On Thu, 22 Jul 2021 at 02:24, Richard Weinberger <richard@nod.at> wrote:
> > >
> > > ----- Ursprüngliche Mail -----
> > > >> But let me advertise ubiblock a second time.
> > > > Sorry, I could not understand about the ubiblock request. Is it
> > > > possible to elaborate little more ?
> > > > We are already using squashfs on top of our UBI volumes (including
> > > > rootfs mounting).
> > > > This is the kernel command line we pass:
> > > > rootfstype=squashfs root=/dev/mtdblock44 ubi.mtd=40,0,30
> > > > And CONFIG_MTD_UBI_BLOCK=y is already enabled in our kernel.
> > > > Do we need to do something different for ubiblock ?
> > >
> > > From that command line I understand that you are *not* using squashfs on top of UBI.
> > > You use mtdblock. ubiblock is a mechanism to turn an UBI volume into a read-only
> > > block device.
> > > See: http://www.linux-mtd.infradead.org/doc/ubi.html#L_ubiblock
> > >
[snip]

Ouch, so surprised that after all these years someone is doing squashfs/mtdblock
instead of using ubiblock :-)

Can we patch either Kconfig or add some warn_once on mtdblock
usage, suggesting to use ubiblock instead?

I remember there was still some use case(s) for mtdblock but I can't remember
now what was it, perhaps we should document the expectations?
(Is that for JFFS2 to mount?)

Thanks,
Ezequiel

  reply	other threads:[~2021-07-29 11:18 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-16  6:42 Pintu Agarwal
2021-07-16  7:16 ` Richard Weinberger
2021-07-16 15:41 ` Greg KH
2021-07-16 16:26   ` Richard Weinberger
2021-07-19  9:09     ` Pintu Agarwal
2021-07-19  9:28       ` Richard Weinberger
2021-07-20  6:17         ` Pintu Agarwal
2021-07-20  6:40           ` Richard Weinberger
2021-07-20  8:01             ` Pintu Agarwal
2021-07-21 20:54               ` Richard Weinberger
2021-07-22 11:10                 ` Pintu Agarwal
2021-07-27 21:16                   ` Richard Weinberger
2021-07-29 11:17                     ` Ezequiel Garcia [this message]
2021-07-29 11:45                       ` Richard Weinberger
2021-07-29 12:03                         ` Ezequiel Garcia
2021-07-29 17:11                           ` Pintu Agarwal
2021-08-20 18:24                             ` Pintu Agarwal
2021-08-22 14:21                               ` Ezequiel Garcia
2021-08-30 15:58                                 ` Pintu Agarwal
2021-10-29 16:12                                   ` Pintu Agarwal
2021-10-29 16:48                                     ` Ezequiel Garcia
2021-11-08 13:51                                       ` Pintu Agarwal
2021-11-12 13:58                                         ` Ezequiel Garcia

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