Re: xfs_info: no info about XFS version?

["Darrick J. Wong" <darrick.wong@oracle.com>]

On Fri, Sep 11, 2020 at 06:14:09AM +0200, LinuxAdmin.pl - administracja serwerami Linux wrote:
> W dniu 2020-09-10 22:44, Eric Sandeen napisał(a):
> > On 9/10/20 3:26 PM, LinuxAdmin.pl - administracja serwerami Linux wrote:
> > > 
> > > Hello,
> > > 
> > > why there is no info about XFS version on xfs_info?
> > 
> > Yeah, this is confusing.
> > 
> > TBH I think "V4" vs "V5" is a secret developer handshake.  Admins know
> > this as "not-crc-enabled" vs "crc-enabled"
> > 
> > Below is a V4 filesystem, due to crc=0
> 
> That's the point! How you will be determining the version number in V7?
> crc=3 xyz=0 abc=1?
> I know that is V4 (migration to V5 already planned!) but thinking the human
> way - it will be nice to have a simple info of used version :)

Seeing as most software goes downhill after V5 (Word, Windows, Notes...)
we intend to beat the averages by never introducing a V6, and expanding
the feature flags fields instead.

--D

> > -Eric
> > 
> > > # LANG=en_US.UTF-8 xfs_info /dev/sdb1
> > > meta-data=/dev/sdb1              isize=256    agcount=4,
> > > agsize=6553408 blks
> > >          =                       sectsz=512   attr=2, projid32bit=0
> > >          =                       crc=0        finobt=0, sparse=0,
> > > rmapbt=0
> > >          =                       reflink=0
> > > data     =                       bsize=4096   blocks=26213632,
> > > imaxpct=25
> > >          =                       sunit=0      swidth=0 blks
> > > naming   =version 2              bsize=4096   ascii-ci=0, ftype=0
> > > log      =internal log           bsize=4096   blocks=12799, version=2
> > >          =                       sectsz=512   sunit=0 blks,
> > > lazy-count=1
> > > realtime =none                   extsz=4096   blocks=0, rtextents=0
> > > 
> 
> -- 
> LinuxAdmin.pl - administracja serwerami Linux
> Wojciech Błaszkowski
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