During my performance testing of various combinations of glfs and nfs
using the kernel build process, I came across something in some
configurations.
Specifically, during make clean after building:
find: WARNING: Hard link count is wrong for ./arch/x86_64/kernel: this
may be a bug in your filesystem driver. Automatically turning on find's
-noleaf option. Earlier results may have failed to include directories
that should have been searched.
In the logs:
[2010-01-08 11:08:08] E [posix.c:3156:do_xattrop] src-store: getxattr
failed on /redhat/BUILD/kernel-2.6.18/linux-2.6.18.x86_64/.tmp_versions
while doing xattrop: No such file or directory
Is there some kind of write re-ordering optimization going on that
breaks things?
The volume spec file I'm using is attached. The server 1 in AFR is
powered down, and server 3 uses a similar spec file but without the
caching applied since it is a slave-only backup server that no
applications connect to.
The client machine is connecting via unfsd.
Gordan
volume src1
type protocol/client
option transport-type socket
option transport.address-family inet
option remote-host 10.2.0.11
option remote-port 7001
option remote-subvolume src1
end-volume
volume src1-writebehind
type performance/write-behind
option cache-size 2MB # default is equal to aggregate-size
option flush-behind on # default is 'off'
option enable-O_SYNC on
subvolumes src1
end-volume
volume src1-iocache
type performance/io-cache
option cache-size 64MB
option cache-timeout 2 # default is 1 second
subvolumes src1-writebehind
end-volume
##############################################################################
volume src3
type protocol/client
option transport-type socket
option transport.address-family inet
option remote-host 10.2.0.13
option remote-port 7001
option remote-subvolume src3
end-volume
volume src3-writebehind
type performance/write-behind
option cache-size 2MB # default is equal to aggregate-size
option flush-behind on # default is 'off'
option enable-O_SYNC on
subvolumes src3
end-volume
volume src3-iocache
type performance/io-cache
option cache-size 64MB
option cache-timeout 2 # default is 1 second
subvolumes src3-writebehind
end-volume
##############################################################################
volume src-store
type storage/posix
option directory /gluster/src
end-volume
volume src2
type features/posix-locks
subvolumes src-store
end-volume
volume src2-writebehind
type performance/write-behind
option cache-size 2MB # default is equal to aggregate-size
option flush-behind on # default is 'off'
option enable-O_SYNC on
subvolumes src2
end-volume
volume src2-iocache
type performance/io-cache
option cache-size 64MB
option cache-timeout 2 # default is 1 second
subvolumes src2-writebehind
end-volume
##############################################################################
volume server
type protocol/server
option transport-type socket
option transport.address-family inet
option transport.socket.listen-port 7001
subvolumes src2
option auth.addr.src2.allow 127.0.0.1,10.*
end-volume
volume src
type cluster/replicate
subvolumes src2-iocache src1-iocache src3-iocache
option read-subvolume src2-iocache
option favorite-child src2-iocache
end-volume
volume server-src
type protocol/server
option transport-type socket
option transport.address-family inet
option transport.socket.listen-port 7002
subvolumes src
option auth.addr.src.allow 127.0.0.1,10.*
end-volume
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