Re: concerning ext3fs

[Hall Stevenson <hallstevenson@mindspring.com>]

* Vineet Kumar (vineet@doorstop.net) [011020 14:30]:
> 
> ... It's now my formal recommendation: use "ext3,ext2" to specify the
> fstype for an ext3 partition in /etc/fstab. This will allow it to be
> mounted as ext3 if possible, or ext2 by non-ext3-aware kernels. (It's
> better than using 'auto' because it's more specific (less chance of
> unexpected results) and updatedb skips partitions whose type is listed
> as 'auto' in fstab.)

Explain the following:

/etc/fstab has

/dev/hdb6 /     ext3,ext2 defaults,errors=remount-ro  1 1
/dev/hdb1 /boot ext3,ext2 rw                          0 2

/etc/mtab says this

/dev/hdb6 / ext3,ext2 rw,errors=remount-ro,errors=remount-ro 0 0
/dev/hdb1 /boot ext3 rw 0 0

/proc/filesystems reports this

nodev   pipefs
        ext3
        ext2
        
nodev   devpts 
        vfat 
        msdos 
        iso9660 
nodev   nfs 
nodev   autofs

I don't know or, at the moment care, what 'pipefs' or 'devpts' is. I do
have some vfat, iso9660, and nfs mounts (but no msdos ones, although
support is compiled into my kernel for them).

What's the relevance of the 'ext2' entry ?? Same as 'msdos' in that I
have *support* for it ??

Back up to fstab and mtab, why would mtab show /dev/hdb6 as 'ext3,ext2'
but not the same for /dev/hdb1 ??

Thanks in advance
Hall