NetBSD Problem Report #37398

From cheusov@tut.by  Sat Nov 17 12:41:40 2007
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Message-Id: <s93bq9tkpsd.fsf@chen.chizhovka.net>
Date: Sat, 17 Nov 2007 14:41:22 +0200
From: cheusov@tut.by
Reply-To:
To: gnats-bugs@NetBSD.org
Subject: LFS and mtime
X-Send-Pr-Version: 3.95

>Number:         37398
>Category:       kern
>Synopsis:       LFS and mtime
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    dholland
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Nov 17 12:45:00 +0000 2007
>Last-Modified:  Wed Nov 09 16:25:01 +0000 2016
>Originator:     cheusov@tut.by
>Release:        NetBSD 4.0_RC4
>Organization:
>Environment:
System: NetBSD chen.chizhovka.net 4.0_RC4 NetBSD 4.0_RC4 (GENERIC) #0: Sun Nov 11 14:06:32 EET 2007 cheusov@chen.chizhovka.net:/srv/obj/sys/arch/i386/compile/GENERIC i386
Architecture: i386
Machine: i386
>Description:

/dev/wd1f on /srv type lfs (noatime, local)

0 trtr>cat Makefile                                      
file1 : file0
        cat file0 > $@

file2 : file1
        cat file1 > $@

file3 : file2
        cat file2 > $@
0 trtr>touch file0
0 trtr>make file3
cat file0 > file1
`file3' is up to date.
0 trtr>ls -lt file*
-rw-r--r--  1 cheusov  syntagma  0 Nov 17 14:39 file0
-rw-r--r--  1 cheusov  syntagma  0 Nov 13 23:30 file3
-rw-r--r--  1 cheusov  syntagma  0 Nov 13 23:30 file2
-rw-r--r--  1 cheusov  syntagma  0 Nov 13 23:30 file1
0 trtr>

>How-To-Repeat:

>Fix:

Unknown
>Release-Note:

>Audit-Trail:

Responsible-Changed-From-To: kern-bug-people->dholland
Responsible-Changed-By: dholland@NetBSD.org
Responsible-Changed-When: Mon, 29 Aug 2016 05:42:22 +0000
Responsible-Changed-Why:
lfs


From: coypu@SDF.ORG
To: gnats-bugs@netbsd.org
Cc: 
Subject: Re: kern/37398: LFS and mtime
Date: Wed, 9 Nov 2016 16:09:59 +0000

 dup kern/13781 which explains a likely cause.

 After a write() call returns, the mtime on a file/directory is changed.
 lfs_cleanered also changes the mtime when committing changes to
 the file system.

From: coypu@SDF.ORG
To: dholland@NetBSD.org, gnats-bugs@netbsd.org
Cc: 
Subject: Re: kern/37398: LFS and mtime
Date: Wed, 9 Nov 2016 16:20:22 +0000

 Now I'm not sure if I paid close attention and I'm not familiar with BSD make.
 ;-)

 But it is another mtime LFS bug.

>Unformatted:

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