[Lustre-discuss] Inode count differences between client and MDS

Jakob Goldbach jakob at goldbach.dk
Fri Apr 11 00:48:18 PDT 2008



On Thu, 2008-04-10 at 20:00 +0200, Johann Lombardi wrote:
> The inode count you get on the client side also takes into account the
> number of inodes available on the OSTs and the default stripe count.
> 

The stripecount is 1. (from /proc/../lov/../stripecount) - The OSTs have
plenty ~400M inodes. The MDT has about ~200M (from tune2fs -l /dev/mdt).
Still, only 75M show up on the client. 

And even stranger - when creating new files - both used count AND
avail-count increases. (see below)

/Jakob  


client# lfs df  -i 
UUID                Inodes     IUsed     IFree IUse% Mounted on
foo-MDT0000_UUID  75382000     19935  75362065    0% /mnt/foo[MDT:0]
foo-OST0000_UUID 456794112      9603 456784509    0% /mnt/foo[OST:0]
foo-OST0001_UUID 456794112      9734 456784378    0% /mnt/foo[OST:1]


client# touch a b c
client# lfs df  -i
UUID                Inodes     IUsed     IFree IUse% Mounted on
foo-MDT0000_UUID  75382003     19938  75362065    0% /mnt/foo[MDT:0]
foo-OST0000_UUID 456794112      9603 456784509    0% /mnt/foo[OST:0]
foo-OST0001_UUID 456794112      9734 456784378    0% /mnt/foo[OST:1]





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