From 87c7fa3cfdadca4ee883daf84373302a42ad5fdc Mon Sep 17 00:00:00 2001 From: Joseph Fernandes Date: Wed, 18 Feb 2015 19:45:23 +0530 Subject: Adding Libgfdb to GlusterFS ************************************************************************* Libgfdb | ************************************************************************* 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 Signed-off-by: Dan Lambright Signed-off-by: Joseph Fernandes Reviewed-on: http://review.gluster.org/9683 Tested-by: Gluster Build System Reviewed-by: Vijay Bellur --- xlators/mgmt/glusterd/src/glusterd-volume-set.c | 1 - 1 file changed, 1 deletion(-) (limited to 'xlators') diff --git a/xlators/mgmt/glusterd/src/glusterd-volume-set.c b/xlators/mgmt/glusterd/src/glusterd-volume-set.c index 467d8cb8518..385e9075ce7 100644 --- a/xlators/mgmt/glusterd/src/glusterd-volume-set.c +++ b/xlators/mgmt/glusterd/src/glusterd-volume-set.c @@ -1662,7 +1662,6 @@ struct volopt_map_entry glusterd_volopt_map[] = { .voltype = "mgmt/glusterd", .op_version = GD_OP_VERSION_3_6_0, }, - /*Trash translator options */ { .key = "features.trash", .voltype = "features/trash", -- cgit