about the POHMELFS
filesystem in early 2008; thereafter, POHMELFS has languished in the
staging tree without much interest or activity. The POHMELFS
developer, Evgeniy Polyakov, expressed his
unhappiness with the development process
and disappeared from the
kernel community for some time.
Now, though, Evgeniy is back with a new
POHMELFS release. He said:
It went a long way from parallel NFS design which lived in
drivers/staging/pohmelfs for years effectively without usage case -
that design was dead.
New pohmelfs uses elliptics network as its storage backend,
which was proved as effective distributed system. Elliptics is used
in production in Yandex search company for several years now and
clusters range from small (like 6 nodes in 3 datacenters to host 15
billions of small files or hundred of nodes to scale to 1 Pb used
This time around, he is asking that the filesystem be merged straight into
the mainline without making a stop in the staging tree. But merging a
filesystem is hard without reviews from the virtual filesystem maintainers,
and no such reviews have yet been done. So Evgeniy may have to wait a
little while longer yet.
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