2.0.0rc4 performance/write-behind seems broken with flush-behind=on If you use flush-behind=on, it is a acceptable result that other client machines will not see your operations immediately. But it is not acceptable that the sequentially executed program cannot see the result immediately caused by the prior one on the same client machine. The later situation happens when I run rpmbuild over a glusterfs volume. If I run following commands with flush-behind = on, some error happens. ############ [root at xen-727057 BUILD]# ( set -x ; rm -fr openssl-fips-0.9.8e; /usr/bin/bzip2 -dc /root/rpmbuild/SOURCES/openssl-fips-0.9.8e-usa.tar.bz2 | tar -xf -; cd openssl-fips-0.9.8e; /root/rpmbuild/SOURCES/hobble-openssl > /dev/null; patch -p1 -b --suffix .redhat < /root/rpmbuild/SOURCES/openssl-fips-0.9.8e-redhat.patch; patch -p1 -b --suffix .defaults < /root/rpmbuild/SOURCES/openssl-0.9.8a-defaults.patch; patch -p1 -b --suffix .krb5 < /root/rpmbuild/SOURCES/openssl-0.9.8a-link-krb5.patch; patch -p1 -b --suffix .soversion < /root/rpmbuild/SOURCES/openssl-0.9.8b-soversion.patch; ) + rm -i -fr openssl-fips-0.9.8e + /usr/bin/bzip2 -dc /root/rpmbuild/SOURCES/openssl-fips-0.9.8e-usa.tar.bz2 + tar -xf - + cd openssl-fips-0.9.8e + /root/rpmbuild/SOURCES/hobble-openssl find: crypto/idea/asm: No such file or directory find: crypto/mdc2/asm: No such file or directory + patch -p1 -b --suffix .redhat patching file Configure + patch -p1 -b --suffix .defaults patching file apps/openssl.cnf Hunk #1 succeeded at 107 (offset 8 lines). Hunk #3 succeeded at 153 (offset 8 lines). + patch -p1 -b --suffix .krb5 patching file Makefile.org Hunk #1 succeeded at 420 (offset 154 lines). + patch -p1 -b --suffix .soversion patching file Makefile.org Hunk #2 FAILED at 278. Hunk #3 FAILED at 291. 2 out of 3 hunks FAILED -- saving rejects to file Makefile.org.rej patching file Configure Hunk #1 FAILED at 1327. 1 out of 1 hunk FAILED -- saving rejects to file Configure.rej ############ You can see, the last 2 patch operates the same file "Makefile.org". ############ [root at xen-727057 BUILD]# lsdiff /root/rpmbuild/SOURCES/openssl-0.9.8a-link-krb5.patch openssl-0.9.8a/Makefile.org [root at xen-727057 BUILD]# lsdiff /root/rpmbuild/SOURCES/openssl-0.9.8b-soversion.patch openssl-0.9.8b/Makefile.org openssl-0.9.8b/Configure ############ If I run each of the command above manually, everything goes right. If the flush-behind is turned off, everything goes right too. #### client vol spec file volume 10.10.123.32-brick1 type protocol/client option transport-type tcp/client option remote-host 10.10.123.32 option remote-port 6986 option transport-timeout 5 option remote-subvolume brick1 end-volume volume 10.10.123.32-brick2 .... end-volume volume dht0-raw type cluster/distribute subvolumes 10.10.123.21-brick1 10.10.123.21-brick2 10.10.123.22-brick1 10.10.123.22-brick2 10.10.123.31-brick1 10.10.123.31-brick2 10.10.123.32-brick1 10.10.123.32-brick2 option lookup-unhashed yes end-volume volume dht0-io-cache type performance/io-cache option cache-size 128MB # default is 32MB option page-size 128KB # 128KB is default option # option priority *.h:3,*.html:2,*:1 # default is '*:0' # option cache-timeout 2 # default is 1 second subvolumes dht0-raw end-volume volume dht0-writebehind type performance/write-behind option aggregate-size 128KB # default is 0bytes option window-size 2MB # default is equal to aggregate-size option flush-behind on # default is 'off' subvolumes dht0-io-cache end-volume volume dht0 type features/filter option read-only off #option root-squashing enable option fixed-uid 99 option fixed-gid 99 #option translate-uid 0=999 #option translate-gid 0=999 subvolumes dht0-writebehind #subvolumes dht0-io-cache end-volume ############################
