[Wylug-help] RAID, mdadm and df

[Martyn Ranyard]

Hi John,

  I realise it is a bit of an assumption that if a raid array is set up with
/boot, swap and a big partition, the big one is /, but I think it's a fairly
valid assumption :-)

   Yeah, resize2fs, that'd be why ext{tab} didn't bring it up on my system,
hopefully that'll make life easier for Roger, especially if it is mounted as
ext3 or 4.

Cheers,
--
Martyn
On 24 September 2010 14:28, John Hodrien <J.H.Hodrien at leeds.ac.uk> wrote:

> On Fri, 24 Sep 2010, Martyn Ranyard wrote:
>
>  Hi Roger,
>>
>>  The size thing is a container mindset issue.  /dev/md1 is the container
>> for
>>  the filesystem, and although the container has been grown with --grow but
>>  the filesystem within it has not.  You need to use the filesystem tool to
>>  resize the filesystem and unless you're using xfs, I believe you'll have
>> to
>>  do this offline (livecd).  extresize I believe is the tool for
>> ext(2/3/4),
>>  but I haven't got the full suite available to me at the moment to check.
>>
>
> Works with ext3 live too:
>
>   "The resize2fs program will resize ext2 or ext3 file systems.  It can be
>    used  to  enlarge or shrink an unmounted file system located on device.
>  If
>    the filesystem is mounted, it can be used to expand the size of  the
>    mounted filesystem, assuming the kernel supports on-line resizing.  (As
> of
>    this writing, the Linux  2.6  kernel  supports  on-line  resize  for
>    filesystems mounted using ext3 only.)."
>
> Unless it's / you can just unmount it and resize it anyway.
>
> jh
>
>
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