Groups > linux.debian.bugs.dist > #1120915

Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab

From	Vincent Lefevre <vincent@vinc17.net>
Newsgroups	linux.debian.bugs.dist, linux.debian.devel
Subject	Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab
Date	2022-10-14 14:00 +0200
Message-ID	<Fgrw5-ebsB-17@gated-at.bofh.it> (permalink)
References	(2 earlier) <Fghn3-e5x9-1@gated-at.bofh.it> <FgqgF-eaNh-3@gated-at.bofh.it> <Fgqql-eaQE-5@gated-at.bofh.it> <Fghn3-e5x9-1@gated-at.bofh.it> <Fgqql-eaQE-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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On 2022-10-14 12:44:25 +0200, Marco d'Itri wrote:
> On Oct 14, Vincent Lefevre <vincent@vinc17.net> wrote:
> > > This is not "the Debian FAQ" but "the DPKG FAQ", which has been known to 
> > > recommend awful things in the past.
> > But it is still considered in the present times by the dpkg developers.
> > Bug 923423 was closed several hours ago based on this dpkg FAQ:
> This is obviously convenient on Guillem's part, but we have to optimize 
> systems by default for the general case and not just for dpkg -i.

This dpkg FAQ says that this is not beneficial for just dpkg,
but also "for any application in the system".

> > (the issue here is that there is a fsync for *every* file, so that for
> And at this point I am wondering if this is a good design, or if it 
> would be better to use a different strategy.

IMHO, this should time based or perhaps the strategy could depend
on the package being installed (critical packages like libc6 could
use fsync for every file, but all these intermediate fsync's are
useless for packages that can simply be reinstalled in case of
crash or hardware related failure).

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

Thread

Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab Vincent Lefevre <vincent@vinc17.net> - 2022-10-14 03:10 +0200
  Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab nick black <dankamongmen@gmail.com> - 2022-10-14 08:10 +0200
  Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab Marco d'Itri <md@Linux.IT> - 2022-10-14 12:10 +0200
    Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab Vincent Lefevre <vincent@vinc17.net> - 2022-10-14 12:40 +0200
      Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab Marco d'Itri <md@linux.it> - 2022-10-14 12:50 +0200
        Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab Vincent Lefevre <vincent@vinc17.net> - 2022-10-14 14:00 +0200
          Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab Marco d'Itri <md@linux.it> - 2022-10-14 15:40 +0200
            Bug#1021750: general: the nodelalloc mount option should be used by default for ext4 in /etc/fstab "Theodore Ts'o" <tytso@mit.edu> - 2022-10-14 20:10 +0200

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