Hi all,
On Mon, Jun 10, 2002 at 11:12:03PM +0300, Daniel Feiglin wrote:
>
>
> Yedidyah Bar-David wrote:
> > Hi all,
> >
> > On Mon, Jun 10, 2002 at 10:09:20AM +0300, Daniel Feiglin wrote:
> >
> >>
> > [snip]
> >
> >>>What question? Of creating ext3? That's simple: mke2fs -j.
> >>>Converting ext2 to ext3? tune2fs -j (Note I havn't tried
> >>
> >>this one,
> >>
> >>>only mk).
> >>
> >>What you describe is exactly what DID NOT work and at the
> >>time was the subject of some rather inconclusive discussions
> >>elewhere. The question of how you convert an ext2->ext3 or go
> >>directly from something else e.g. FAT32 remains open.
> >>
> >
> >
> > #dd if=/dev/zero of=ttt1 bs=1024k count=100
> > 100+0 records in
> > 100+0 records out
> >
> > #mke2fs ttt1
> > mke2fs 1.26 (3-Feb-2002)
> > ttt1 is not a block special device.
> > Proceed anyway? (y,n) y
> > Filesystem label=
> > OS type: Linux
> > Block size=1024 (log=0)
> > Fragment size=1024 (log=0)
> > 25688 inodes, 102400 blocks
> > 5120 blocks (5.00%) reserved for the super user
> > First data block=1
> > 13 block groups
> > 8192 blocks per group, 8192 fragments per group
> > 1976 inodes per group
> > Superblock backups stored on blocks:
> > 8193, 24577, 40961, 57345, 73729
> >
> > Writing inode tables: done
> > Writing superblocks and filesystem accounting information: done
> >
> > This filesystem will be automatically checked every 23 mounts or
> > 180 days, whichever comes first. Use tune2fs -c or -i to override.
> >
> > #dmesg -c
> >
> > #mount -t ext3 -o loop ttt1 /mnt
> > mount: wrong fs type, bad option, bad superblock on /dev/loop0,
> > or too many mounted file systems
> >
> > #dmesg
> > ext3: No journal on filesystem on loop(7,0)
> >
> > #mount -t ext2 -o loop ttt1 /mnt
> > (no answer)
> >
> > #umount /mnt
> > (no answer)
> >
> > #tune2fs -j ttt1
> > tune2fs 1.26 (3-Feb-2002)
> > Creating journal inode: done
> > This filesystem will be automatically checked every 23 mounts or
> > 180 days, whichever comes first. Use tune2fs -c or -i to override.
> >
> > #dmesg -c
> >
> > #mount -t ext3 -o loop ttt1 /mnt
> > (no answer)
> >
> > #dmesg
> > kjournald starting. Commit interval 5 seconds
> > EXT3 FS 2.4-0.9.16, 02 Dec 2001 on loop(7,0), internal journal
> > EXT3-fs: mounted filesystem with ordered data mode.
> >
> > #uname -a
> > Linux pinky 2.4.17 #4 Mon May 27 19:28:31 IDT 2002 i686 unknown
> >
> > Is this good enough?
>
> So why didn't you say so the first time?
Since this was the first time I tried it. Seeing it works, I posted.
As I said, I only used (for myself) mke2fs -j, not tune2fs (until
I tried it today before posting).
>
> >
> > Repeating myself: This has _nothing_ to do with fat->ext[23]
> > conversions, which are _much_ more problematic.
>
> Hmm. One could do it in two steps fat->ext2->ext3.
Sorry for not following all the thread: Is fat->ext2 available?
Unless it is, I think writing one is a lot of work. If you refer
to someone's (was it Marc the terrible :-) ?) suggestion to
copy and copy back, then I completely agree with him, and therefore
didn't reply then, but I wouldn't call that "conversion".
>
> > ext2 and ext3 have the same on-disk structure, by design. The only
> > difference is the journal, which is usually a file (but can also
> > be e.g. on another device).
> >
> >
> >>Daniel Feiglin
> >
> >
> > Didi
> >
> >
>
> P.S. Apologies for multiple send of my last message - Internet Zahav Webmail
> screwup.
No problem :-(
>
>
>
Didi
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