Re: [PATCH 0/20] return f_fsid for statfs(2)

[Jamie Lokier]

Andreas Dilger wrote:
> On Jan 20, 2009  12:30 +0800, Coly Li wrote:
> > Ext[234] is sophisticated to have on-disk uuid record. Most file systems
> > in the patches (except jfs and reiser3) do not have a persistent uuid,
> > a reasonable/feasible solution without media format modification is fsid
> > in boot/mount life cycle. That's why huge_encode_dev(sb->s_bdev->bd_dev)
> > is used here.  For jfs and reiserfs3, is there any use case for
> > persistent fsid cross boots ?
> 
> I would say yes, this is worthwhile to do, or the fsid can change between
> boots unnecessarily.

Even FAT has a volume id which should probably be used.
I'm guessing NTFS does too.

-- Jamie
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