Package: vzctl
Version: 3.0.24-12
Severity: normal
Tags: patch
I sent this a few months ago, but it seems to have been eaten by a
faulty MTA setup :-(.
With multiple Debian VEs installed on a host, load spikes occur
corresponding with cron job execution.
On investigation, it appeared that /etc/vz/dists/scripts/postcreate.sh
randomises run-times of entries in /etc/crontab, but doesn't touch stuff
under /etc/cron.d/
I'm not entirely sure that this patch is the correct answer (maybe it'll
break things like rsnapshot - which needs to have it's entries run in the
originally-specified order) - but it is at least a start...
Tim.
-- System Information:
Debian Release: 6.0.2
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-openvz-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages vzctl depends on:
ii iproute 20100519-3 networking and traffic control too
ii libc6 2.11.2-10 Embedded GNU C Library: Shared lib
ii vzquota 3.0.12-3 server virtualization solution - q
Versions of packages vzctl recommends:
ii rsync 3.0.7-2 fast remote file copy program (lik
vzctl suggests no packages.
-- Configuration Files:
/etc/vz/cron/vz changed [not included]
/etc/vz/dists/scripts/debian-set_hostname.sh changed [not included]
/etc/vz/vz.conf changed [not included]
-- no debconf information
*** /tmp/openvz-postcreate-randomize-cron.d-too.patch
--- postcreate.sh.old 2010-09-14 06:07:31.000000000 +0100
+++ /etc/vz/dists/scripts/postcreate.sh 2011-08-03 09:27:22.490356610 +0100
@@ -24,12 +24,12 @@
function randcrontab()
{
- file=${VE_ROOT}"/etc/crontab"
+ for file in ${VE_ROOT}/etc/cron.d/* ${VE_ROOT}/etc/crontab
+ do
+ [ -f "${file}" ] || return 0
- [ -f "${file}" ] || return 0
-
- /bin/cp -fp ${file} ${file}.$$
- cat ${file} | awk '
+ /bin/cp -fp ${file} ${file}.$$
+ cat ${file} | awk '
BEGIN { srand(); }
{
if ($0 ~ /^[ \t]*#/ || $0 ~ /^[ \t]+*$/) {
@@ -61,8 +61,9 @@
}
print line;
}
-' > ${file}.$$ && /bin/mv -f ${file}.$$ ${file}
- /bin/rm -f ${file}.$$ 2>/dev/null
+ ' > ${file}.$$ && /bin/mv -f ${file}.$$ ${file}
+ /bin/rm -f ${file}.$$ 2>/dev/null
+ done
}
function disableroot()
--
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