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authorPavan Sondur <pavan@gluster.com>2010-03-09 02:37:30 +0000
committerAnand V. Avati <avati@dev.gluster.com>2010-03-09 00:24:57 -0800
commite66adead7078163cd9d9c0bbd8ec6289b4e4ea35 (patch)
treef1b444fd5bb8c6488e4e7dbca9cfabb2866b6d12 /extras
parentffc138f7f19bf55c6daf8aea7f15bde1ca3cfc6a (diff)
extras: Add script to be used before using quota translator.
Signed-off-by: Pavan Vilas Sondur <pavan@gluster.com> Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 569 (Memory leak in quota translator) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=569
Diffstat (limited to 'extras')
-rw-r--r--extras/Makefile.am2
-rwxr-xr-xextras/disk_usage_sync.sh86
2 files changed, 87 insertions, 1 deletions
diff --git a/extras/Makefile.am b/extras/Makefile.am
index 8ad2f63..c111371 100644
--- a/extras/Makefile.am
+++ b/extras/Makefile.am
@@ -5,5 +5,5 @@ EditorMode_DATA = glusterfs-mode.el glusterfs.vim
SUBDIRS = init.d benchmarking volgen
-EXTRA_DIST = specgen.scm MacOSX/Portfile glusterfs-mode.el glusterfs.vim migrate-unify-to-distribute.sh backend-xattr-sanitize.sh backend-cleanup.sh defrag.sh scale-n-defrag.sh
+EXTRA_DIST = specgen.scm MacOSX/Portfile glusterfs-mode.el glusterfs.vim migrate-unify-to-distribute.sh backend-xattr-sanitize.sh backend-cleanup.sh defrag.sh scale-n-defrag.sh disk_usage_sync.sh
diff --git a/extras/disk_usage_sync.sh b/extras/disk_usage_sync.sh
new file mode 100755
index 0000000..85ee158
--- /dev/null
+++ b/extras/disk_usage_sync.sh
@@ -0,0 +1,86 @@
+#!/bin/sh
+
+# This script can be used to sync disk usage before activating quotas on GlusterFS.
+# There are two scenarios where quotas are used and this script has to be used accordingly -
+#
+# 1. Server side
+# The script needs to be run with backend export directory as the argument. This script updates
+# the current disk usage of the backend directory in a way that is intelligible to the GlusterFS quota
+# translator. Make sure you run this script before starting glusterfsd (GlusterFS server process):
+# * for the first time
+# * after any server outage (reboot, etc.)
+
+# 2. Client side
+# The script needs to be run with the client mount point as the argument. It updates the current disk
+# of the GlusterFS volume is a way that is intelligible to the GlusterFS quota translator. Make sure
+# you run this script after a fresh mount of the GlusterFS volume on the client:
+# * For the first time
+# * After any client outage (reboot, remount, etc.)
+
+# Please note that this script is dependent on the 'attr' package, more specifically 'setfattr' to set
+# extended attributes of files.
+# GlusterFS
+#
+# (c) 2010 Gluster Inc <http://www.gluster.com/>
+
+PROGRAM_NAME="disk_usage_sync.sh"
+
+#check if setfattr is available
+check_for_attr ()
+{
+ `command -v setfattr >/dev/null`
+ if [ "${?}" -gt 0 ]; then
+ echo >&2 "This script requires the 'attr' package to run. Either it has not been installed or is not present currently in the system path."
+ exit 1
+ fi
+
+}
+
+usage () {
+ echo >&2 "$PROGRAM_NAME - Command used to sync disk usage information before activating quotas on GlusterFS.
+
+usage: $PROGRAM_NAME <target-directory>"
+
+exit 1
+}
+
+TARGET_DIR=$1
+EXT_ATTR_NAME="trusted.glusterfs-quota-du"
+
+#output of du in number of bytes
+get_disk_usage ()
+{
+ if [ ! -d $TARGET_DIR ]; then
+ echo >&2 "Error: $TARGET_DIR does not exist."
+ exit 1
+ fi
+
+ DISK_USAGE=`du -bc $TARGET_DIR | grep 'total' | cut -f1`
+ if [ "${?}" -gt 0 ]; then
+ exit 1
+ fi
+
+}
+
+#set the extended attribute of the root directory with du size in bytes
+set_disk_usage ()
+{
+ ` setfattr -n $EXT_ATTR_NAME -v $DISK_USAGE $TARGET_DIR`
+ if [ "${?}" -gt 0 ]; then
+ exit 1
+ fi
+}
+
+main ()
+{
+ [ $# -lt 1 ] && usage
+
+ check_for_attr
+
+ get_disk_usage
+ set_disk_usage
+
+ printf "Disk Usage information has been sync'd successfully.\n"
+}
+
+main "$@"