Fix column width in 'zpool iostat -v' and 'zpool list -v'

[npc203]

This commit fixes a minor spacing issue caused when enumerating vdev names, which originated from #13031

Signed-off-by: Samuel Wycliffe samuelwycliffe@gmail.com

Motivation and Context

The tabular spacing was off by a few characters after enumerating vdev names, in both zpool iostat -v and zpool list -v .
This PR fixes it in the same way as it is in zpool status as seen here

Description

Before:

After:

How Has This Been Tested?

As this is a very minor visual change, I've done the changes and compiled it in-tree (using make cmd).
Manually ran the commands before and after, as shown above.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Performance enhancement (non-breaking change which improves efficiency)
• Code cleanup (non-breaking change which makes code smaller or more readable)
• Breaking change (fix or feature that would cause existing functionality to change)
• Library ABI change (libzfs, libzfs_core, libnvpair, libuutil and libzfsbootenv)
• Documentation (a change to man pages or other documentation)

Checklist:

• My code follows the OpenZFS code style requirements.
• I have updated the documentation accordingly.
• I have read the contributing document.
• I have added tests to cover my changes.
• I have run the ZFS Test Suite with this change applied.
• All commit messages are properly formatted and contain Signed-off-by.

[behlendorf]

cc: @akashb-22 would you mind reviewing this followup to your previous PR.

[akashb-22]

@npc203 Thanks for noticing this, As I generally use files for testing, I haven't noticed this till now
without the patch I still see,

# zpool iostat -v
                                     capacity     operations     bandwidth
pool                               alloc   free   read  write   read  write
---------------------------------  -----  -----  -----  -----  -----  -----
pool-oss0                          1.21M  17.0G      1    206  14.7K  1.02M
  draid2:16d:20c:2s-0              1.21M  17.0G      1    206  14.7K  1.02M
    /root/test/files/draid/file1       -      -      0     10    751  53.1K
    /root/test/files/draid/file2       -      -      0     10    751  52.0K
...

but, for some cases like when I use smaller vdev names(sd* / nvmeX) with draid as top-level vdev, I see the iostat/list width breaks(ie: enumerated vdev names breaks the column width) like in your case,

# zpool iostat -v
                       capacity     operations     bandwidth
pool                 alloc   free   read  write   read  write
-------------------  -----  -----  -----  -----  -----  -----
pool-oss0            1.21M  17.0G      1    201  14.0K   977K
  draid2:16d:20c:2s-0  1.21M  17.0G      1    201  14.0K   977K
    /tmp/file1           -      -      0     10    714  49.5K
    /tmp/file2           -      -      0      9    714  48.6K
...

With this patch applied, column spacing in zpool iostat/list O/P looks to be perfect.

[akashb-22]

I think you need to fix the commit message according to style guidelines.

[npc203]

Ah, pardon my ignorance. I was so into fixing the code 80 line length limit, that I skimmed through the commit style check section. Fixed.