87c7fa3cfd
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Libgfdb |
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Libgfdb provides abstract mechanism to record extra/rich metadata
required for data maintenance, such as data tiering/classification.
It provides consumer with API for recording and querying, keeping
the consumer abstracted from the data store used beneath for storing data.
It works in a plug-and-play model, where data stores can be plugged-in.
Presently we have plugin for Sqlite3. In the future will provide recording
and querying performance optimizer. In the current implementation the schema
of metadata is fixed.
Schema:
~~~~~~
GF_FILE_TB Table:
~~~~~~~~~~~~~~~~~
This table has one entry per file inode. It holds the metadata required to
make decisions in data maintenance.
GF_ID (Primary key) : File GFID (Universal Unique IDentifier in the namespace)
W_SEC, W_MSEC : Write wind time in sec & micro-sec
UW_SEC, UW_MSEC : Write un-wind time in sec & micro-sec
W_READ_SEC, W_READ_MSEC : Read wind time in sec & micro-sec
UW_READ_SEC, UW_READ_MSEC : Read un-wind time in sec & micro-sec
WRITE_FREQ_CNTR INTEGER : Write Frequency Counter
READ_FREQ_CNTR INTEGER : Read Frequency Counter
GF_FLINK_TABLE:
~~~~~~~~~~~~~~
This table has all the hardlinks to a file inode.
GF_ID : File GFID (Composite Primary Key)``|
GF_PID : Parent Directory GFID (Composite Primary Key) |-> Primary Key
FNAME : File Base Name (Composite Primary Key)__|
FPATH : File Full Path (Its redundant for now, this will go)
W_DEL_FLAG : This Flag is used for crash consistancy, when a link is unlinked.
i.e Set to 1 during unlink wind and during unwind this record
is deleted
LINK_UPDATE : This Flag is used when a link is changed i.e rename.
Set to 1 when rename wind and set to 0 in rename unwind
Libgfdb API:
~~~~~~~~~~~
Refer libglusterfs/src/gfdb/gfdb_data_store.h
Change-Id: I2e9fbab3878ce630a7f41221ef61017dc43db11f
BUG: 1194753
Signed-off-by: Joseph Fernandes <josferna@redhat.com>
Signed-off-by: Dan Lambright <dlambrig@redhat.com>
Signed-off-by: Joseph Fernandes <josferna@redhat.com>
Reviewed-on: http://review.gluster.org/9683
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
51 lines
1.7 KiB
Makefile
51 lines
1.7 KiB
Makefile
EXTRA_DIST = autogen.sh \
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COPYING-GPLV2 COPYING-LGPLV3 \
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INSTALL README.md AUTHORS THANKS NEWS \
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glusterfs.spec glusterfs-api.pc.in libgfchangelog.pc.in libgfdb.pc.in \
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run-tests.sh \
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build-aux/pkg-version \
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build-aux/xdrgen \
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contrib/argp-standalone \
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contrib/umountd \
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$(shell find $(top_srcdir)/tests -type f -print)
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SUBDIRS = $(ARGP_STANDALONE_DIR) libglusterfs rpc api xlators glusterfsd \
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$(FUSERMOUNT_SUBDIR) doc extras cli heal @SYNCDAEMON_SUBDIR@ \
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@UMOUNTD_SUBDIR@ tools
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pkgconfigdir = @pkgconfigdir@
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pkgconfig_DATA = glusterfs-api.pc libgfchangelog.pc libgfdb.pc
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CLEANFILES =
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gitclean: distclean
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find . -name Makefile.in -exec rm -f {} \;
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find . -name Makefile -exec rm -f {} \;
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find . -name mount.glusterfs -exec rm -f {} \;
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rm -fr autom4te.cache
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rm -f missing aclocal.m4 config.h.in config.guess config.sub ltmain.sh install-sh configure depcomp
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-rm -fr $(CONTRIBDIR)/argp-standalone/autom4te.cache
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-rm -f $(CONTRIBDIR)/argp-standalone/aclocal.m4
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-rm -f $(CONTRIBDIR)/argp-standalone/config.h.in
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-rm -f $(CONTRIBDIR)/argp-standalone/configure
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-rm -f $(CONTRIBDIR)/argp-standalone/depcomp
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-rm -fr $(CONTRIBDIR)/argp-standalone/.deps
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-rm -f $(CONTRIBDIR)/argp-standalone/install-sh
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-rm -f $(CONTRIBDIR)/argp-standalone/missing
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dist-hook: gen-VERSION gen-ChangeLog
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-rm -fr $(distdir)/contrib/argp-standalone/autom4te.cache
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-rm -fr $(distdir)/contrib/argp-standalone/.deps
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-rm -fr $(distdir)/contrib/umountd/.deps
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.PHONY: gen-VERSION gen-ChangeLog
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gen-ChangeLog:
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(cd $(srcdir) && git diff && echo ===== git log ==== && git log) > $(distdir)/ChangeLog
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gen-VERSION:
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if test -d .git; then \
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$(top_srcdir)/build-aux/pkg-version --full \
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> $(distdir)/VERSION; \
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fi
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