https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-15504 Lustre <p>It would be useful to be able to add the "<tt>&#45;ls</tt>" option to "<tt>lfs find</tt>" to print out file attributes.</p> <p>Even better would be if <tt>&#45;ls</tt> was implemented as a fixed-format option of the "<tt>&#45;&#45;printf</tt>" command, which could print out POSIX and possibly some limited Lustre-specific attributes such as FID, stripe_count.</p> LU-15504

"lfs find" is missing "-ls" support

Improvement Minor Open Unresolved WC Triage Andreas Dilger lad23dd lug23dd medium Mon, 31 Jan 2022 01:35:27 +0000 Tue, 19 Sep 2023 10:48:13 +0000 Lustre 2.10.0 Lustre 2.16.0 0 4 <p><a href="https://jira.whamcloud.com/secure/ViewProfile.jspa?name=georgea" class="user-hover" rel="georgea">georgea</a>, is this something that you and/or <a href="https://jira.whamcloud.com/secure/ViewProfile.jspa?name=rmohr" class="user-hover" rel="rmohr">rmohr</a> are planning to implement for 2.16.0? If not, hopefully the following notes will be useful to you or whomever looks into this in the future.</p> <p>I haven't looked into the details, but it looks reasonable to have the "<tt>-ls</tt>" option internally map to "<tt>-printf</tt>" with a static format string to match the output format of the normal "<tt>find</tt>" command:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>$ find /etc -ls | head -10 130563 12 drwxr-xr-x 94 root root 12288 Oct 25 17:15 /etc 146902 4 drwxr-xr-x 3 root root 4096 Sep 30 13:41 /etc/tuned 131968 4 -rw-r--r-- 1 root root 1305 Sep 21 07:17 /etc/tuned/tuned-main.conf 131975 4 -rw-r--r-- 1 root root 14 Oct 21 14:12 /etc/tuned/active_profile 146903 4 drwxr-xr-x 2 root root 4096 Sep 21 07:17 /etc/tuned/recommend.d 146040 4 -rw-r--r-- 1 root root 5 Oct 21 14:12 /etc/tuned/profile_mode 131967 4 -rw-r--r-- 1 root root 1111 Mar 21 2019 /etc/tuned/bootcmdline 130615 4 ---------- 1 root root 859 Jul 20 2020 /etc/shadow- 130967 0 lrwxrwxrwx 1 root root 10 Jan 25 2022 /etc/rc0.d -&gt; rc.d/rc0.d 167146    4 -rw-r--r--   1 root   root       1968 Apr 11  2018 /etc/mail.rc #inode kbs sym_mode lnk usrnam grpnam size_bytes modify_time pathname </pre> </div></div> <p>This looks like "<tt>%i\t%k\t%M\t%n\t%u\t%g\t%s\t%t\t%p</tt>\n" would be at least a good first approximation, according to the Linux manpage.</p> <p>It looks like a few additional <tt>-printf</tt> options would need to be implemented, but nothing overly complex:</p> <ul class="alternate" type="square"> <li>"<tt>%i</tt>" - inode number (should be trivial).  For Lustre it might be more useful to print "<tt>%LF</tt>" for the FID instead of the inode number"?</li> <li>"<tt>%k</tt>" - file blocks in kilobytes (should be trivial, just "<tt>%b/2</tt>")</li> <li>"<tt>%M</tt>" - symbolic file access mode (a small amount of work, decode file type (<tt>-bcdls</tt>) + <tt>-rwxSt</tt> UGO permission bits)</li> <li>"<tt>%n</tt>" - link count (should be trivial)</li> <li>"<tt>%u</tt>" - username (could be mapped to "<tt>%U</tt>" initially to print numeric UID, and implemented separately)</li> <li>"<tt>%g</tt>" - groupname (use "<tt>%g</tt>" initially, as with "<tt>%u</tt>")</li> </ul> <p>Comparing the output of regular "<tt>find -printf '%i\t%k\t%M\t%n\t%u\t%g\t%s\t%t\t%p</tt>\n'" with "<tt>find -ls</tt>" shows they are fairly close:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[root@centos7 ~]# find /etc -printf "%i\t%k\t%M\t%n\t%u\t%g\t%s\t%t\t%p\n" | head -10 130563 12 drwxr-xr-x 94 root root 12288 Tue Oct 25 17:15:22.0799592647 2022 /etc 146902 4 drwxr-xr-x 3 root root 4096 Fri Sep 30 13:41:40.0933994189 2022 /etc/tuned 131968 4 -rw-r--r-- 1 root root 1305 Wed Sep 21 07:17:58.0000000000 2022 /etc/tuned/tuned-main.conf 131975 4 -rw-r--r-- 1 root root 14 Fri Oct 21 14:12:37.0195947071 2022 /etc/tuned/active_profile 146903 4 drwxr-xr-x 2 root root 4096 Wed Sep 21 07:17:58.0000000000 2022 /etc/tuned/recommend.d 146040 4 -rw-r--r-- 1 root root 5 Fri Oct 21 14:12:37.0198948473 2022 /etc/tuned/profile_mode 131967 4 -rw-r--r-- 1 root root 1111 Thu Mar 21 16:10:46.0000000000 2019 /etc/tuned/bootcmdline 130615 4 ---------- 1 root root 859 Mon Jul 20 18:27:36.0000000000 2020 /etc/shadow- 130861 0 lrwxrwxrwx 1 root root 13 Fri Sep 30 13:41:15.0672852655 2022 /etc/rc.local 130847 4 drwxr-xr-x 2 root root 4096 Fri Sep 30 13:41:39.0487986087 2022 /etc/modprobe.d [root@centos7 ~]# find /etc -ls | head -10 130563 12 drwxr-xr-x 94 root root 12288 Oct 25 17:15 /etc 146902 4 drwxr-xr-x 3 root root 4096 Sep 30 13:41 /etc/tuned 131968 4 -rw-r--r-- 1 root root 1305 Sep 21 07:17 /etc/tuned/tuned-main.conf 131975 4 -rw-r--r-- 1 root root 14 Oct 21 14:12 /etc/tuned/active_profile 146903 4 drwxr-xr-x 2 root root 4096 Sep 21 07:17 /etc/tuned/recommend.d 146040 4 -rw-r--r-- 1 root root 5 Oct 21 14:12 /etc/tuned/profile_mode 131967 4 -rw-r--r-- 1 root root 1111 Mar 21 2019 /etc/tuned/bootcmdline 130615 4 ---------- 1 root root 859 Jul 20 2020 /etc/shadow- 130861 0 lrwxrwxrwx 1 root root 13 Sep 30 13:41 /etc/rc.local -&gt; rc.d/rc.local 130847 4 drwxr-xr-x 2 root root 4096 Sep 30 13:41 /etc/modprobe.d </pre> </div></div> <p>Printing out the symlink target would also need a small amount of extra work, not sure how critical that would be for an initial implementation. The timestamps are abbreviated to 3 columns ("<tt>Mon Day Time</tt>", or "<tt>Mon Day Year</tt>" for files over 6 months old), but I'm not sure that is better than having a fixed-format timestamp (though it is a bit longer). Some of the column widths are smaller than a whole tab also, and right justified for the numbers, but I don't think that is totally critical.</p> <p>@Andreas Dilger, Thank you for the detailed notes. Let me read through it and discuss with Rick.</p> <p>I also filed <a href="https://jira.whamcloud.com/browse/LU-16561" title="allow &#39;lfs find -printf&#39; field widths" class="issue-link" data-issue-key="LU-16561">LU-16561</a> to implement fixed field widths for "<tt>lfs find -printf</tt>", which would probably give better results for "<tt>lfs find -ls</tt>" than using "\t" for the field separator.</p> Cloners LU-10378 Duplicate LU-9689 Related LU-5170 LU-7495 LU-16560 LU-15837 LU-15276 LU-16561 LU-9537 Development Rank 1|i02gs7: Rank (Obsolete) 9223372036854775807