From: Richard Weinberger <richard@sigma-star.at>
To: Rock Lee <rockdotlee@gmail.com>
Cc: Richard Weinberger <richard.weinberger@gmail.com>,
linux-mtd@lists.infradead.org
Subject: Re: Detach the ubi device of rootfs
Date: Tue, 10 Oct 2017 09:33:27 +0200 [thread overview]
Message-ID: <2001363.51LN5LPS4v@blindfold> (raw)
In-Reply-To: <CAL-1w2vC4-fesPcjKHTtn3N9xNOA7Xa7PZ-O0Pu8VD5mg-t2NA@mail.gmail.com>
Am Dienstag, 10. Oktober 2017, 04:02:09 CEST schrieb Rock Lee:
> > Why do you think you need to detach upon reboot?
> > UBI and UBIFS are designed to face power-cuts at any time.
> > Although, sane setups with initramfs/systemd unmount also the rootfs
> > upon reboot.
>
> When reboot, UBIFS will be remount as read-only, from the filesystem
> part, it is safe, because there is no data write to it. I see ubi
> background thread will exit when ubi detach, and there would no
> scrubing anymore, I am sure reboot after detach is safe enough in UBI
> layer. I am just curious what will happen when reboot the system while
> ubi is scrubing. Will it damage the flash if this situation happens a
> lot?
Scrubbing is an atomic operation, just like copying a LEB.
What problem do you have in mind?
Thanks,
//richard
--
sigma star gmbh - Eduard-Bodem-Gasse 6 - 6020 Innsbruck - Austria
ATU66964118 - FN 374287y
next prev parent reply other threads:[~2017-10-10 7:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-09 11:11 Detach the ubi device of rootfs Rock Lee
2017-10-09 12:05 ` Richard Weinberger
2017-10-10 2:02 ` Rock Lee
2017-10-10 7:33 ` Richard Weinberger [this message]
2017-10-11 1:52 ` Rock Lee
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