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ivanets
2008 Feb 19
32
storing SOM epoch in EA
Good day,
some time ago we discussed that it would be very helpful to
store epoch in inode on mds. the perfect solution could be
to store epoch in old inode body, but there is no much space
for this in the body and with DMU we''ll have this problem
again.
given the minimal inode size we use on MDS is 512 bytes, we
can store upto 13 stripes in the body. larger EAs go to a
dedicated block.
2007 Nov 26
15
bad 1.6.3 striped write performance
Hi,
I''m seeing what can only be described as dismal striped write
performance from lustre 1.6.3 clients :-/
1.6.2 and 1.6.1 clients are fine. 1.6.4rc3 clients (from cvs a couple
of days ago) are also terrible.
the below shows that the OS (centos4.5/5) or fabric (gigE/IB) or lustre
version on the servers doesn''t matter - the problem is with the 1.6.3
and 1.6.4rc3 client kernels