From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: master fails to build on FreeBSD when ACL support is on
Date: Mon, 22 Jan 2018 09:11:41 -0500 [thread overview]
Message-ID: <jwvmv16dm0m.fsf-monnier+gmane.emacs.devel@gnu.org> (raw)
In-Reply-To: 4bdd53c4-5a79-e4e5-0a8d-d1d0d65aee25@cs.ucla.edu
> I suspect rename-file is trying to mimic 'mv' here. With GNU 'mv', the
> destination can temporarily be in a partially-written state when file system
> boundaries are being crossed. This behavior is allowed by POSIX. Although
> the behavior you describe does have advantages, it is not allowed by POSIX
> for 'mv' and it can exhaust the destination file system even when there's
> room for the final result.
Hmm... regarding the problem of transient space usage, we could simply
remove the target, then copy to the temp file, then move to target.
We can choose one of the downsides:
- a transient state where the target is missing
- a transient state where the target is partially written
- a transient state where we use more disk space
Not sure why POSIX chose the middle downside. I personally much prefer
the third one.
Stefan
next prev parent reply other threads:[~2018-01-22 14:11 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-16 4:20 master fails to build on FreeBSD when ACL support is on Joseph Mingrone
2018-01-16 17:06 ` Paul Eggert
2018-01-16 18:16 ` Eli Zaretskii
2018-01-18 23:40 ` Joseph Mingrone
2018-01-19 14:45 ` Eli Zaretskii
2018-01-19 14:59 ` Joseph Mingrone
2018-01-19 15:33 ` Eli Zaretskii
2018-01-19 16:38 ` Stefan Monnier
2018-01-19 18:45 ` Eli Zaretskii
2018-01-19 20:53 ` Stefan Monnier
2018-01-19 21:17 ` Glenn Morris
2018-01-21 1:04 ` Glenn Morris
2018-01-21 3:42 ` Paul Eggert
2018-11-14 23:12 ` Glenn Morris
2018-11-15 1:23 ` Paul Eggert
2018-11-15 14:48 ` Eli Zaretskii
2018-01-19 22:42 ` Paul Eggert
2018-01-20 7:52 ` Michael Albinus
2018-01-21 3:49 ` Paul Eggert
2018-01-21 12:14 ` Michael Albinus
2018-01-20 7:57 ` Eli Zaretskii
2018-01-20 20:47 ` Joseph Mingrone
2018-01-20 23:35 ` Joseph Mingrone
2018-01-21 3:41 ` Paul Eggert
2018-01-21 3:50 ` Stefan Monnier
2018-01-22 6:42 ` Paul Eggert
2018-01-22 14:11 ` Stefan Monnier [this message]
2018-01-21 15:53 ` Eli Zaretskii
2018-01-22 6:52 ` Paul Eggert
2018-01-22 15:52 ` Eli Zaretskii
2018-01-22 17:02 ` Paul Eggert
2018-01-22 17:41 ` Eli Zaretskii
2018-01-22 18:50 ` Paul Eggert
2018-01-22 20:32 ` Eli Zaretskii
2018-01-23 0:47 ` Paul Eggert
2018-01-21 15:56 ` Eli Zaretskii
2018-01-21 16:22 ` Joseph Mingrone
2018-01-20 7:46 ` Eli Zaretskii
2018-01-17 18:33 ` Ashish SHUKLA
2018-01-17 18:53 ` Joseph Mingrone
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