vfat iPod suddenly fails to write [was: Re: [solved] Re: mounting iPod with USB]

From: Nori Heikkinen (nori_at_sccs.swarthmore.edu)
Date: 09/28/04

  • Next message: Ivan Imperl: "Debian sid - jigdo problem" 
    Date: Tue, 28 Sep 2004 12:43:03 -0400
To: Erik Steffl <steffl@bigfoot.com>

    on Tue, 28 Sep 2004 09:02:31AM -0700, Erik Steffl insinuated:
    > Nori Heikkinen wrote:
    > ...
    > >/dev/sda /mnt/ipod hfsplus rw,user,noauto,noatime 0 0
    > >
    > >), /var/log/syslog gives the error:
    > >
    > >Sep 27 16:12:48 homeruns kernel: HFS+-fs warning: Filesystem was not
    > >cleanly unmounted, running fsck.hfsplus is recommended. mounting
    > >read-only.
    > >
    > >and then it mounts it read-only, like it says.
    >
    > can't you force it to remount rw?

    you mean, like, remount -o rw,remount /dev/sda2 (or whatever device)?
    -- no, i can't. tried that; should have said.

    > That can often be one with regular HDs. Why don't you run fsck on
    > it? is there no fsck.hfsplus? apt-file didn't find it...

    yeah, i couldn't find one.

    > there is a way to set the number of mounts after which it requires
    > fsck, can't you set it to higher number?

    hm, probably ... but now i converted it to vfat.

    > for regular HDs I see different message if they exceed the mount
    > count (it says something to that effect), maybe your iPod really was
    > unmounted improperly.

    it's entirely possible.

    > ...
    > >homeruns:~# hpmount /dev/sda /mnt/ipod hpmount: /dev/sda: Neither
    > >Wrapper nor native HFS+ volume header found (Unknown error
    > >4294967295)
    > >
    > >which is just wack, afaict, seeing as it was mounting happily with
    > >`mount -t hfsplus` up until 32 mounts (and still does, just r-o).
    >
    > why are you mounting sda? generally you don't mount the disk but a
    > partition (that has a filesystem), on my iPod (bought august 2003)
    > the sda3 is the one to mount.

    on mine, it's /dev/sda2 ...

    > I use firewire but that shouldn't make any difference.

    apparently the hfsplus tools figure out which partition on the device
    given has the data you want for you -- magic! so, that's legit when i
    mount with -t hfsplus, but not when i do it with -t vfat.

    now, i'm getting a weird problem, however. after dumping about 200
    songs on my newly-vfat'd iPod, i tried to add another batch, and
    gtkpod crashed, and my kernel told me:

    Sep 28 12:14:44 homeruns kernel: FAT: unable to read inode block for
    updating (i_pos 1219121)<3>FAT: Directory bread(block 76088) failed
    Sep 28 12:14:44 homeruns kernel: FAT: Directory bread(block 76089)
    failed
    Sep 28 12:14:44 homeruns kernel: FAT: Directory bread(block 76090)
    failed
    Sep 28 12:14:44 homeruns kernel: FAT: Directory bread(block 76091)
    failed
    ...
    ...

    and so on, for about 100 lines.

    now i can't mount it. i get the error:

    mount: /dev/sda2 is not a valid block device

    when i try. when this happened the first time, i tried rebooting (i
    know, bad linux user! shouldn't need to reboot), and that solved the
    problem until it happened agin.

    i'm going to try this on a friend's mac tonight, but what's up? do i
    have a lemon? why is the filesystem suddenly ceasing to be
    unwritable?

    </nori> 

    -- 
    .~.      nori @ sccs.swarthmore.edu
    /V\  http://www.sccs.swarthmore.edu/~nori
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