Package: debianutils
Followup-For: Bug #587766
If you want to use it, here is a patch that lets people pass in a strength
option for the compression program.
It leaves the strength for xz blank, and xz chooses a number based on physical
RAM.
(As a minor note xz can take -0, but the others can't so I left it out.)
-- System Information:
Debian Release: 5.0.5
APT prefers stable
APT policy: (990, 'stable')
Architecture: i386 (x86_64)
Kernel: Linux 2.6.30 (SMP w/8 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash
Versions of packages debianutils depends on:
ii libc6 2.11.1-3 Embedded GNU C Library: Shared lib
ii sensible-utils 0.0.4 Utilities for sensible alternative
debianutils recommends no packages.
debianutils suggests no packages.
-- no debconf information
diff -Naur debianutils-3.3.old/savelog debianutils-3.3/savelog
--- debianutils-3.3.old/savelog 2010-06-30 10:40:39.000000000 -0400
+++ debianutils-3.3/savelog 2010-07-08 08:40:20.874623104 -0400
@@ -27,6 +27,7 @@
# -p - preserve mode/user/group of original file
# -j - use bzip2 instead of gzip
# -J - use xz instead of gzip
+# -1 .. -9 - compression strength or memory usage (default: 9, except for xz)
# -x script - invoke script with rotated log file in $FILE
# -n - do not rotate empty files
# -q - be quiet
@@ -81,7 +82,8 @@
# common location
export PATH=$PATH:/sbin:/bin:/usr/sbin:/usr/bin
COMPRESS="gzip"
-COMPRESS_OPTS="-9f"
+COMPRESS_OPTS="-f"
+COMPRESS_STRENGTH_DEF="-9";
DOT_Z=".gz"
DATUM=`date +%Y%m%d%H%M%S`
@@ -118,6 +120,7 @@
echo " -p - preserve mode/user/group of original file"
echo " -j - use bzip2 instead of gzip"
echo " -J - use xz instead of gzip"
+ echo " -1 .. -9 - compression strength or memory usage (default: 9, except for xz)"
echo " -x script - invoke script with rotated log file in \$FILE"
echo " -n - do not rotate empty files"
echo " -q - suppress rotation message"
@@ -139,7 +142,7 @@
}
-while getopts m:u:g:c:r:CdD:tlphjJx:nq opt ; do
+while getopts m:u:g:c:r:CdD:tlphjJ123456789x:nq opt ; do
case "$opt" in
m) mode="$OPTARG" ;;
u) user="$OPTARG" ;;
@@ -150,8 +153,9 @@
d) datum=1 ;;
D) DATUM=$(date +$OPTARG) ;;
t) touch=1 ;;
- j) COMPRESS="bzip2"; COMPRESS_OPTS="-9f"; DOT_Z=".bz2" ;;
- J) COMPRESS="xz"; COMPRESS_OPTS="-9f"; DOT_Z=".xz" ;;
+ j) COMPRESS="bzip2"; COMPRESS_OPTS="-f"; COMPRESS_STRENGTH_DEF="-9"; DOT_Z=".bz2" ;;
+ J) COMPRESS="xz"; COMPRESS_OPTS="-f"; COMPRESS_STRENGTH_DEF=""; DOT_Z=".xz" ;;
+ [1-9]) COMPRESS_STRENGTH="-$opt" ;;
x) hookscript="$OPTARG" ;;
l) COMPRESS="" ;;
p) preserve=1 ;;
@@ -174,6 +178,12 @@
exit 2
fi
+if [ -n "$COMPRESS_STRENGTH" ]; then
+ COMPRESS_OPTS="$COMPRESS_OPTS $COMPRESS_STRENGTH"
+else
+ COMPRESS_OPTS="$COMPRESS_OPTS $COMPRESS_STRENGTH_DEF"
+fi
+
# cycle thru filenames
while [ $# -gt 0 ]; do
diff -Naur debianutils-3.3.old/savelog.8 debianutils-3.3/savelog.8
--- debianutils-3.3.old/savelog.8 2010-06-30 10:40:39.000000000 -0400
+++ debianutils-3.3/savelog.8 2010-07-08 09:08:19.223572465 -0400
@@ -5,7 +5,7 @@
.SH SYNOPSIS
.B savelog
[\-m mode] [\-u user] [\-g group] [\-t] [\-p] [\-c cycle] [\-l] [\-j]
-[\-J] [\-C] [\-d] [\-l] [\-r rolldir] [\-n] [\-q] [\-D dateformat] file ...
+[\-J] [\-1\ .\|.\ \-9] [\-C] [\-d] [\-l] [\-r rolldir] [\-n] [\-q] [\-D dateformat] file ...
.SH DESCRIPTION
The
.B savelog
@@ -122,6 +122,11 @@
.TP
.B \-J
compress with xz instead of gzip
+
+For xz no strength option is set, and xz decides on the default based on the total amount of physical RAM. Note that xz can use a very large amount of memory for the higher compression levels.
+.TP
+.B \-1\ .\|.\ \-9
+compression strength or memory usage (default: 9, except for xz)
.TP
.B \-C
force cleanup of cycled logfiles
