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authorAmar Tumballi <amar@gluster.com>2010-07-14 13:58:20 +0000
committerAnand V. Avati <avati@dev.gluster.com>2010-07-14 14:44:26 -0700
commit654a720eed0bc5faaeeaa4eb34f1cfc10df76230 (patch)
treeb84419d192c46e39a40b7a3133666ddde453aba2 /xlators/cluster/dht/src/dht-common.h
parente73a856e926465068f6f6cf5a0cace501589957c (diff)
proper way to do defrag of a mountpoint
Usage: "glusterfs-defrag <MOUNTPOINT>" there are new features added to distribute with this patch: * bash# getfattr -n trusted.distribute.linkinfo <file> Gives output in the format "<hostname>:<directory>", if there is a linkfile present, where hostname is server, directory is backend directory where the actual linkfile is present. * bash# getfattr -n trusted.glusterfs.pathinfo <path> Gives layout information if directory, and info about actual location of file in backend servers, in the form of 'hostname:directory'. (TODO: should extend it to all xlators) * bash# getfattr -n trusted.distribute.fix.layout <path> scales out the directory layout in distribute, so when new servers are added, layouts are fixed to include them. * removed 'scale-n-defrag.sh' as its no more required. * changed 'defrag.sh' to have a feature to specify target bricks, so defrag happens to only those nodes. moved the file to 'glusterfs-defrag', which now gets installed to '${prefix}/bin' * storage/posix: takes new option 'hostname' so it can resolve to same hostname given during 'gluster volume create'. with 'trusted.glusterfs.pathinfo' posix returns the value in 'hostname:real_path' format. Signed-off-by: Amar Tumballi <amar@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 1073 ('gluster defrag <VOLNAME>' fails in mainline) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=1073
Diffstat (limited to 'xlators/cluster/dht/src/dht-common.h')
-rw-r--r--xlators/cluster/dht/src/dht-common.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h
index b361f1442..d5a5c7b2c 100644
--- a/xlators/cluster/dht/src/dht-common.h
+++ b/xlators/cluster/dht/src/dht-common.h
@@ -27,6 +27,7 @@
#ifndef _DHT_H
#define _DHT_H
+#define GF_XATTR_FIX_LAYOUT_KEY "trusted.distribute.fix.layout"
#define GF_DHT_LOOKUP_UNHASHED_ON 1
#define GF_DHT_LOOKUP_UNHASHED_AUTO 2
@@ -116,6 +117,10 @@ struct dht_local {
int32_t flags;
mode_t mode;
dev_t rdev;
+
+ /* need for file-info */
+ char *pathinfo;
+ char *key;
};
typedef struct dht_local dht_local_t;