[Wylug-help] RAID, mdadm and df

[Roger]

On 24/09/2010 14:14, John Hodrien wrote:
 > On Fri, 24 Sep 2010, Roger wrote:
 >
 >> 1. Does it actually matter if individual drives retain their letter
<<snip>>
 > It shouldn't matter.
 >
 >> 2. Why the discrepancy between /proc/mdstat and what df reports?
 > You've resized the md, but did you ever resize the filesystem?
 >
On 24/09/2010 14:17, 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.
>
>    As to the physical connection, no, in modern linux raid, you can
> switch the physical devices around almost willy-nilly, as the raid
> superblock contains all the information to say that the partition is
> part x of a raid set.

Thanks both,

Now I know what I didn't do, I can try to do it!

Thank goodness for WYLUG!

Roger

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