LVM logical volume won't mount

[me at mattgillen.net (Matthew Gillen)]

Tom Metro wrote:
> I must be missing something simple and obvious here...after creating a
> software RAID5 array,

I guess you didn't follow some of the links from Monday about why RAID5 is
evil ;-)
http://www.miracleas.com/BAARF/RAID5_versus_RAID10.txt

> Note that the system currently has a RAID1 array with the same type of
> file system (XFS) that works fine, suggesting that the file system tools
> and mount are behaving normally - or at least were when that file system
> was setup (the XFS tools may have since been updated). The system in
> question is running Ubuntu Edgy (kernel version 2.6.20-5), so it is
> possible that there is an actual bug somewhere.
> 
> The one red flag I'm seeing is:
> 
> # xfs_check /dev/video_vg/video_lv
> bad format 0 for inode 130 type 0
> bad magic number 0 for inode 144
> bad magic number 0 for inode 145
> allocated inode 130 has 0 link count
> 
> which is not what I'd expect for a brand new, never mounted file system.
> Running xfs_repair crashes:

Do other filesystem types work?  What about creating an LV on top of a RAID1
device?

Matt

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