XFS error during mount

[Chris Murphy]

On Jun 27, 2014, at 2:40 AM, Roman Kravets <admin at softded.net> wrote:

> Hello!
> 
> When I mount my disk with XFS I saw error in dmesg:
> 
> Jun 27 11:14:38 softded kernel: XFS (dm-4): xfs_buf_get_uncached: failed to map pages
> Jun 27 11:14:38 softded kernel: vmap allocation for size 1048576 failed: use vmalloc=<size> to increase size.
> Jun 27 11:14:38 softded kernel: vmap allocation for size 1048576 failed: use vmalloc=<size> to increase size.
> Jun 27 11:14:38 softded kernel: vmap allocation for size 1048576 failed: use vmalloc=<size> to increase size.
> Jun 27 11:14:38 softded kernel: XFS (dm-4): xfs_buf_get_uncached: failed to map pages
> Jun 27 11:14:38 softded kernel: vmap allocation for size 4194304 failed: use vmalloc=<size> to increase size.
> Jun 27 11:14:38 softded kernel: XFS (dm-4): xfs_buf_get_uncached: failed to map pages
> Jun 27 11:14:38 softded kernel: XFS (dm-4): xfs_buf_get_uncached: failed to map pages
> Jun 27 11:14:38 softded kernel: XFS (dm-4): xfs_buf_get_uncached: failed to map pages
> Jun 27 11:14:38 softded kernel: XFS (dm-4): Ending clean mount
> 
> I have more then 10 millions inodes on partition. My computer: Pentium 4 3GHz and 2 GB memory.
> I use Fedora 20 with kernel 3.14.7-200.fc20.i686+PAE
> 
> What is it meen "use vmalloc=<size> to increase size"? When can I change it parameter?

I suggest also asking about this directly on the XFS list. XFS  is going to be the default fs for Fedora 21 Server, and will include i686 arch as far as I know. So we should try to squash any related i686 bugs or non-graceful failures as possible.

Chris Murphy