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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2001363.51LN5LPS4v@blindfold \
--to=richard@sigma-star.at \
--cc=linux-mtd@lists.infradead.org \
--cc=richard.weinberger@gmail.com \
--cc=rockdotlee@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.