Zfs - what does atime update? Post: 302954705

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Operating Systems Solaris Zfs - what does atime update? Post 302954705 by jlliagre on Thursday 10th of September 2015 09:19:50 AM

09-10-2015

Registered User

Quote:

Originally Posted by jabberwocky

Unfortunately I cannot install the gnu utils for solaris to get stat available, due to rigid change control.

Most GNU utils are already there but GNU stat is unfortunately not part of them. Solaris ls has been extended to support some GNU options though, and they provide the information required.

Quote:

I have not come across ls -lu before; I have tried repeatedly catting the file atimetest.txt today, but that does not show any change in the ls -lu output.
I am happy to accept that the default setting for atime (=on) updates the inode data, which is something I cannot see easily, in my current setup.

Here is a test showing the access time changing on Solaris 11.2:

Code:

$ ls -l foo
-rw-r-----   1 jlliagre staff          5 Mar 20 01:20 foo
$ ls -l --full-time foo
-rw-r-----   1 jlliagre staff          5 2015-03-20 01:20:15.576863674 +0100 foo
$ ls -lu --full-time foo
-rw-r-----   1 jlliagre staff          5 2015-04-25 08:52:32.741753870 +0200 foo
$ cat foo > /dev/null
$ ls -lu --full-time foo
-rw-r-----   1 jlliagre staff          5 2015-09-10 14:59:57.582793533 +0200 foo

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LEARN ABOUT LINUX

undocumented

UNDOCUMENTED(7) 					     Linux Programmer's Manual						   UNDOCUMENTED(7)

NAME

       undocumented - No manpage for this program, utility or function.

DESCRIPTION

       This  program,  utility	or function does not have a useful manpage.  Before opening a bug to report this, please check with the Debian Bug
       Tracking System (BTS) at <http://bugs.debian.org/> if a bug has already been reported.  If not, you can submit a wishlist bug if you want.

       If you are a competent and accurate writer and are willing to spend the time reading the source code and writing good manpages please write
       a  better  man page than this one.  Please contact the package maintainer and copy man-pages@qa.debian.org in order to avoid several people
       working on the same manpage.

       Even if you are not an accurate writer, your input may be helpful.  Writing manual pages is quite easy, the format is described in  man(7).
       The most important and time-consuming task is to collect the information to be put in the new manpage.

DIAGNOSTICS

       It  is  possible  that  the man page for the command you specified is installed and that your manual page index caches are out of sync. You
       should try running mandb(8).

       Try the following options if you want more information:

       foo --help, foo -h, foo -?

       info foo

       whatis foo, apropos foo

       dpkg --listfiles foo, dpkg --search foo

       locate '*foo*'

       find / -name '*foo*'

       Additionally, check the directories /usr/share/doc/foo, /usr/lib/foo.

       The documentation might be in a package starting with the same name as the package the software belongs to, but ending with -doc or -docs.

       If you still didn't find the information you are looking for you might consider posting a call for help to debian-user@lists.debian.org.

SEE ALSO

       info(1), whatis(1), apropos(1), dpkg(8), locate(1), find(1), updatedb(1), undocumented(3), man(7), mandb(8), missing(7).

Debian GNU/Linux						 August 24th, 2003						   UNDOCUMENTED(7)