linux-ext4 - Re: [PATCH] misc: add e2mmpstatus utility

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Message-ID: <20171230015704.GE11757@thunk.org>
Date:   Fri, 29 Dec 2017 20:57:04 -0500
From:   Theodore Ts'o <tytso@....edu>
To:     Andreas Dilger <adilger@...ger.ca>
Cc:     linux-ext4 <linux-ext4@...r.kernel.org>,
        Shuichi Ihara <sihara@....com>, Li Xi <lixi@....com>,
        Wang Shilong <wshilong@....com>
Subject: Re: [PATCH] misc: add e2mmpstatus utility

On Fri, Dec 29, 2017 at 04:02:04PM -0700, Andreas Dilger wrote:
> > Why not include this into dumpe2fs?  Maybe dumpe2fs -m to just print
> > the MMP information and include the MMP nodetime and time for either
> > the full dumpe2fs or dumpe2fs -h output?
> 
> That would definitely be an option.  The mmpstatus utility was written by
> DDN, and I'm passing it on after some code cleanup.
> 
> I think it would be reasonable to include the other MMP fields into the
> dumpe2fs output, and then run the full MMP activity check if called with
> "-m" or named as "mmpstatus".  I don't want dumpe2fs to be blocked on
> the MMP update checking all the time, since that can be slow.

SGTM.

> I'll see if I can get a patch out in the next couple of days.

Many thanks!!

Cheers,

				- Ted