Re: tests/misc/ls-time

[Michael Stone]

On Sun, Jan 17, 2010 at 09:59:46AM +0100, Andreas Schwab wrote:
> Michael Stone <address@hidden> writes:
> > It seems that touch -a does update ctime on btrfs, invalidating one of the
> > assumptions behind this test and causing it to fail. 
>
> Did you mean "does not update ctime"?

Yes. My eyes are starting to cross. I thought I had duplicated something 
manually, but now I can't. So scratch what I said in the original 
message. I keep getting test failures like this:


failed ls ctime test -- this failure is expected at least for SunOS4.1.4
and for tmpfs file systems on Solaris 5.5.1.

In the output below, `c' should have had a ctime more recent than
that of `a', but does not.
-rw-rw-r-- 1 mstone mstone 0 2010-01-17 14:22:47.702311166 +0000 a
-rw-rw-r-- 2 mstone mstone 0 2010-01-17 14:22:45.698811694 +0000 c


So I guess the problem is that ln isn't updating ctime. (On linux 
2.6.31 + btrfs.)

> stat foo
   File: `foo'
   Size: 0               Blocks: 0          IO Block: 4096   regular 
empty file
Device: 14h/20d Inode: 121291      Links: 1
Access: (0664/-rw-rw-r--)  Uid: ( 1000/  mstone)   Gid: ( 1000/  mstone)
Access: 2010-01-17 09:40:52.662310537 -0500
Modify: 2010-01-17 09:40:52.662310537 -0500
Change: 2010-01-17 09:40:52.662310537 -0500
> ln foo bar
> stat foo
   File: `foo'
   Size: 0               Blocks: 0          IO Block: 4096   regular 
empty file
Device: 14h/20d Inode: 121291      Links: 2
Access: (0664/-rw-rw-r--)  Uid: ( 1000/  mstone)   Gid: ( 1000/  mstone)
Access: 2010-01-17 09:40:52.662310537 -0500
Modify: 2010-01-17 09:40:52.662310537 -0500
Change: 2010-01-17 09:40:52.662310537 -0500


But then I also have a build log 
(https://buildd.debian.org/fetch.cgi?&pkg=coreutils&ver=8.1-1&arch=amd64&stamp=1261006367&file=log) 
with a different failure, which is what I thought I'd duplicated last 
night, but can't for the life of me duplicate again this morning. (Short 
version of the failure:

+ touch -m -d '1998-01-15 23:00' a
+ touch -m -d '1998-01-15 22:00' b
+ touch -m -d '1998-01-15 21:00' c
+ touch -a -d '1998-01-14 13:00' c
+ touch -a -d '1998-01-14 12:00' b
+ sleep 2
+ touch -a -d '1998-01-14 11:00' a
++ ls -c a c
+ set c a
+ test 'c a' = 'a c'
+ fail=1



Mike Stone