596 lines
14 KiB
Bash
596 lines
14 KiB
Bash
#!/bin/sh
|
|
#
|
|
# 2005-2009 Nico Schottelius (nico-ccollect at schottelius.org)
|
|
#
|
|
# This file is part of ccollect.
|
|
#
|
|
# ccollect is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# ccollect is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with ccollect. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
# Initially written for SyGroup (www.sygroup.ch)
|
|
# Date: Mon Nov 14 11:45:11 CET 2005
|
|
|
|
# Error upon expanding unset variables:
|
|
set -u
|
|
|
|
#
|
|
# Standard variables (stolen from cconf)
|
|
#
|
|
__pwd="$(pwd -P)"
|
|
__mydir="${0%/*}"; __abs_mydir="$(cd "$__mydir" && pwd -P)"
|
|
__myname=${0##*/}; __abs_myname="$__abs_mydir/$__myname"
|
|
|
|
#
|
|
# where to find our configuration and temporary file
|
|
#
|
|
CCOLLECT_CONF="${CCOLLECT_CONF:-/etc/ccollect}"
|
|
CSOURCES="${CCOLLECT_CONF}/sources"
|
|
CDEFAULTS="${CCOLLECT_CONF}/defaults"
|
|
CPREEXEC="${CDEFAULTS}/pre_exec"
|
|
CPOSTEXEC="${CDEFAULTS}/post_exec"
|
|
|
|
export TMP=$(mktemp "/tmp/${__myname}.XXXXXX")
|
|
VERSION="0.8"
|
|
RELEASE="2009-08-20"
|
|
HALF_VERSION="ccollect ${VERSION}"
|
|
FULL_VERSION="ccollect ${VERSION} (${RELEASE})"
|
|
|
|
#
|
|
# CDATE: how we use it for naming of the archives
|
|
# DDATE: how the user should see it in our output (DISPLAY)
|
|
#
|
|
CDATE="date +%Y%m%d-%H%M"
|
|
DDATE="date +%Y-%m-%d-%H:%M:%S"
|
|
SDATE="date +%s"
|
|
|
|
#
|
|
# unset values
|
|
#
|
|
PARALLEL=""
|
|
USE_ALL=""
|
|
|
|
#
|
|
# catch signals
|
|
#
|
|
trap "rm -f \"${TMP}\"" 1 2 15
|
|
|
|
#
|
|
# Functions
|
|
#
|
|
|
|
# time displaying echo
|
|
_techo()
|
|
{
|
|
echo "$(${DDATE}): $@"
|
|
}
|
|
|
|
# exit on error
|
|
_exit_err()
|
|
{
|
|
_techo "$@"
|
|
rm -f "${TMP}"
|
|
exit 1
|
|
}
|
|
|
|
add_name()
|
|
{
|
|
awk "{ print \"[${name}] \" \$0 }"
|
|
}
|
|
|
|
#
|
|
# Execute on remote host, if backing up to a remote host
|
|
#
|
|
pcmd()
|
|
{
|
|
if [ "${remote_host}" ]; then
|
|
ssh "${remote_host}" "$@"
|
|
else
|
|
"$@"
|
|
fi
|
|
}
|
|
|
|
delete_from_file()
|
|
{
|
|
#
|
|
# ssh-"feature": we cannot do '... read ...; ssh ...; < file',
|
|
# because ssh reads stdin! -n does not work -> does not ask for password
|
|
#
|
|
file="$1"; shift
|
|
while read to_remove; do set -- "$@" "${ddir}/${to_remove}"; done < "${file}"
|
|
_techo "Removing $@ ..."
|
|
pcmd rm ${VVERBOSE} -rf "$@" || _exit_err "Removing $@ failed."
|
|
}
|
|
|
|
display_version()
|
|
{
|
|
echo "${FULL_VERSION}"
|
|
exit 0
|
|
}
|
|
|
|
usage()
|
|
{
|
|
cat << eof
|
|
${__myname}: [args] <interval name> <sources to backup>
|
|
|
|
ccollect creates (pseudo) incremental backups
|
|
|
|
-h, --help: Show this help screen
|
|
-p, --parallel: Parallelise backup processes
|
|
-a, --all: Backup all sources specified in ${CSOURCES}
|
|
-v, --verbose: Be very verbose (uses set -x)
|
|
-V, --version: Print version information
|
|
|
|
This is version ${VERSION}, released on ${RELEASE}
|
|
(the first version was written on 2005-12-05 by Nico Schottelius).
|
|
|
|
Retrieve latest ccollect at http://www.nico.schottelius.org/software/ccollect/
|
|
eof
|
|
exit 0
|
|
}
|
|
|
|
#
|
|
# Parse options
|
|
#
|
|
while [ "$#" -ge 1 ]; do
|
|
case "$1" in
|
|
-a|--all)
|
|
USE_ALL=1
|
|
;;
|
|
-v|--verbose)
|
|
set -x
|
|
;;
|
|
-p|--parallel)
|
|
PARALLEL=1
|
|
;;
|
|
-h|--help)
|
|
usage
|
|
;;
|
|
-V|--version)
|
|
display_version
|
|
;;
|
|
-h|--help|-*)
|
|
usage
|
|
;;
|
|
--)
|
|
# ignore the -- itself
|
|
shift
|
|
break
|
|
;;
|
|
*)
|
|
break
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
#
|
|
# Setup interval
|
|
#
|
|
if [ $# -ge 1 ]; then
|
|
export INTERVAL="$1"
|
|
shift
|
|
else
|
|
usage
|
|
fi
|
|
|
|
#
|
|
# Check for configuraton directory
|
|
#
|
|
[ -d "${CCOLLECT_CONF}" ] || _exit_err "No configuration found in " \
|
|
"\"${CCOLLECT_CONF}\" (is \$CCOLLECT_CONF properly set?)"
|
|
|
|
#
|
|
# Create (portable!) source "array"
|
|
#
|
|
export no_sources=0
|
|
|
|
if [ "${USE_ALL}" = 1 ]; then
|
|
#
|
|
# Get sources from source configuration
|
|
#
|
|
( cd "${CSOURCES}" && ls -1 > "${TMP}" ); ret=$?
|
|
|
|
[ "${ret}" -eq 0 ] || _exit_err "Listing of sources failed. Aborting."
|
|
|
|
while read tmp; do
|
|
eval export source_${no_sources}=\"${tmp}\"
|
|
no_sources=$((${no_sources}+1))
|
|
done < "${TMP}"
|
|
else
|
|
#
|
|
# Get sources from command line
|
|
#
|
|
while [ "$#" -ge 1 ]; do
|
|
eval arg=\"\$1\"; shift
|
|
|
|
eval export source_${no_sources}=\"${arg}\"
|
|
no_sources="$((${no_sources}+1))"
|
|
done
|
|
fi
|
|
|
|
#
|
|
# Need at least ONE source to backup
|
|
#
|
|
if [ "${no_sources}" -lt 1 ]; then
|
|
usage
|
|
else
|
|
_techo "${HALF_VERSION}: Beginning backup using interval ${INTERVAL}"
|
|
fi
|
|
|
|
#
|
|
# Look for pre-exec command (general)
|
|
#
|
|
if [ -x "${CPREEXEC}" ]; then
|
|
_techo "Executing ${CPREEXEC} ..."
|
|
"${CPREEXEC}"; ret=$?
|
|
_techo "Finished ${CPREEXEC} (return code: ${ret})."
|
|
|
|
[ "${ret}" -eq 0 ] || _exit_err "${CPREEXEC} failed. Aborting"
|
|
fi
|
|
|
|
#
|
|
# Let's do the backup
|
|
#
|
|
i=0
|
|
while [ "${i}" -lt "${no_sources}" ]; do
|
|
#
|
|
# Get current source
|
|
#
|
|
eval name=\"\$source_${i}\"
|
|
i=$((${i}+1))
|
|
|
|
export name
|
|
|
|
#
|
|
# start ourself, if we want parallel execution
|
|
#
|
|
if [ "${PARALLEL}" ]; then
|
|
"$0" "${INTERVAL}" "${name}" &
|
|
continue
|
|
fi
|
|
|
|
#
|
|
# Start subshell for easy log editing
|
|
#
|
|
(
|
|
backup="${CSOURCES}/${name}"
|
|
#
|
|
# Stderr to stdout, so we can produce nice logs
|
|
#
|
|
exec 2>&1
|
|
|
|
#
|
|
# Record start of backup: internal and for the user
|
|
#
|
|
begin_s="$(${SDATE})"
|
|
_techo "Beginning to backup"
|
|
|
|
#
|
|
# Standard configuration checks
|
|
#
|
|
if [ ! -e "${backup}" ]; then
|
|
_exit_err "Source does not exist."
|
|
fi
|
|
|
|
#
|
|
# Configuration _must_ be a directory (cconfig style)
|
|
#
|
|
if [ ! -d "${backup}" ]; then
|
|
_exit_err "\"${name}\" is not a cconfig-directory. Skipping."
|
|
fi
|
|
|
|
#
|
|
# Read / create configuration
|
|
#
|
|
c_source="${backup}/source"
|
|
c_dest="${backup}/destination"
|
|
c_pre_exec="${backup}/pre_exec"
|
|
c_post_exec="${backup}/post_exec"
|
|
c_marker="ccollect-marker"
|
|
for opt in verbose very_verbose summary exclude rsync_options \
|
|
delete_incomplete remote_host rsync_failure_codes \
|
|
mtime quiet_if_down ; do
|
|
if [ -f "${backup}/${opt}" -o -f "${backup}/no_${opt}" ]; then
|
|
eval c_$opt=\"${backup}/$opt\"
|
|
else
|
|
eval c_$opt=\"${CDEFAULTS}/$opt\"
|
|
fi
|
|
done
|
|
|
|
#
|
|
# Sort by ctime (default) or mtime (configuration option)
|
|
#
|
|
if [ -f "$c_mtime" ] ; then
|
|
TSORT="t"
|
|
else
|
|
TSORT="tc"
|
|
fi
|
|
|
|
#
|
|
# First execute pre_exec, which may generate destination or other parameters
|
|
#
|
|
if [ -x "${c_pre_exec}" ]; then
|
|
_techo "Executing ${c_pre_exec} ..."
|
|
"${c_pre_exec}"; ret="$?"
|
|
_techo "Finished ${c_pre_exec} (return code ${ret})."
|
|
|
|
if [ "${ret}" -ne 0 ]; then
|
|
_exit_err "${c_pre_exec} failed. Skipping."
|
|
fi
|
|
fi
|
|
|
|
#
|
|
# Source configuration checks
|
|
#
|
|
if [ ! -f "${c_source}" ]; then
|
|
_exit_err "Source description \"${c_source}\" is not a file. Skipping."
|
|
else
|
|
source=$(cat "${c_source}"); ret="$?"
|
|
if [ "${ret}" -ne 0 ]; then
|
|
_exit_err "Source ${c_source} is not readable. Skipping."
|
|
fi
|
|
fi
|
|
|
|
#
|
|
# Destination is a path
|
|
#
|
|
if [ ! -f "${c_dest}" ]; then
|
|
_exit_err "Destination ${c_dest} is not a file. Skipping."
|
|
else
|
|
ddir="$(cat "${c_dest}")"; ret="$?"
|
|
if [ "${ret}" -ne 0 ]; then
|
|
_exit_err "Destination ${c_dest} is not readable. Skipping."
|
|
fi
|
|
fi
|
|
|
|
#
|
|
# Set pre-cmd, if we backup to a remote host.
|
|
#
|
|
if [ -f "${c_remote_host}" ]; then
|
|
remote_host="$(cat "${c_remote_host}")"; ret="$?"
|
|
if [ "${ret}" -ne 0 ]; then
|
|
_exit_err "Remote host file ${c_remote_host} exists, but is not readable. Skipping."
|
|
fi
|
|
destination="${remote_host}:${ddir}"
|
|
else
|
|
remote_host=""
|
|
destination="${ddir}"
|
|
fi
|
|
export remote_host
|
|
|
|
#
|
|
# Parameters: ccollect defaults, configuration options, user options
|
|
#
|
|
|
|
#
|
|
# Rsync standard options
|
|
#
|
|
set -- "$@" "--archive" "--delete" "--numeric-ids" "--relative" \
|
|
"--delete-excluded" "--sparse"
|
|
|
|
#
|
|
# Exclude list
|
|
#
|
|
if [ -f "${c_exclude}" ]; then
|
|
set -- "$@" "--exclude-from=${c_exclude}"
|
|
fi
|
|
|
|
#
|
|
# Output a summary
|
|
#
|
|
if [ -f "${c_summary}" ]; then
|
|
set -- "$@" "--stats"
|
|
fi
|
|
|
|
#
|
|
# Verbosity for rsync, rm, and mkdir
|
|
#
|
|
VVERBOSE=""
|
|
if [ -f "${c_very_verbose}" ]; then
|
|
set -- "$@" "-vv"
|
|
VVERBOSE="-v"
|
|
elif [ -f "${c_verbose}" ]; then
|
|
set -- "$@" "-v"
|
|
fi
|
|
|
|
#
|
|
# Extra options for rsync provided by the user
|
|
#
|
|
if [ -f "${c_rsync_options}" ]; then
|
|
while read line; do
|
|
set -- "$@" "$line"
|
|
done < "${c_rsync_options}"
|
|
fi
|
|
|
|
#
|
|
# Check: source is up and accepting connections (before deleting old backups!)
|
|
#
|
|
if ! rsync "${source}" >/dev/null 2>"${TMP}" ; then
|
|
if [ ! -f "${c_quiet_if_down}" ]; then
|
|
cat "${TMP}"
|
|
fi
|
|
_exit_err "Source ${source} is not readable. Skipping."
|
|
fi
|
|
|
|
#
|
|
# Check: destination exists?
|
|
#
|
|
( pcmd cd "${ddir}" ) || _exit_err "Cannot change to ${ddir}. Skipping."
|
|
|
|
#
|
|
# Check: incomplete backups? (needs echo to remove newlines)
|
|
#
|
|
incomplete="$(echo \
|
|
$(pcmd ls -1 "${ddir}/" | \
|
|
awk "/\.${c_marker}\$/ { print \$0; gsub(\"\.${c_marker}\$\",\"\",\$0); print \$0 }" | \
|
|
tee "${TMP}"))"
|
|
|
|
if [ "${incomplete}" ]; then
|
|
_techo "Incomplete backups: ${incomplete}"
|
|
if [ -f "${c_delete_incomplete}" ]; then
|
|
delete_from_file "${TMP}"
|
|
fi
|
|
fi
|
|
|
|
#
|
|
# Interval definition: First try source specific, fallback to default
|
|
#
|
|
c_interval="$(cat "${backup}/intervals/${INTERVAL}" 2>/dev/null)"
|
|
|
|
if [ -z "${c_interval}" ]; then
|
|
c_interval="$(cat "${CDEFAULTS}/intervals/${INTERVAL}" 2>/dev/null)"
|
|
|
|
if [ -z "${c_interval}" ]; then
|
|
_exit_err "No definition for interval \"${INTERVAL}\" found. Skipping."
|
|
fi
|
|
fi
|
|
|
|
#
|
|
# Check: maximum number of backups is reached?
|
|
# If so remove. Use grep and ls -p so we only look at directories
|
|
#
|
|
count="$(pcmd ls -p1 "${ddir}" | grep "^${INTERVAL}\..*/\$" | wc -l \
|
|
| sed 's/^ *//g')" || _exit_err "Counting backups failed"
|
|
|
|
_techo "Existing backups: ${count} Total keeping backups: ${c_interval}"
|
|
|
|
if [ "${count}" -ge "${c_interval}" ]; then
|
|
substract="$((${c_interval} - 1))"
|
|
remove="$((${count} - ${substract}))"
|
|
_techo "Removing ${remove} backup(s)..."
|
|
|
|
pcmd ls -${TSORT}p1r "${ddir}" | grep "^${INTERVAL}\..*/\$" | \
|
|
head -n "${remove}" > "${TMP}" || \
|
|
_exit_err "Listing old backups failed"
|
|
|
|
delete_from_file "${TMP}"
|
|
fi
|
|
|
|
#
|
|
# Check for backup directory to clone from: Always clone from the latest one!
|
|
#
|
|
last_dir="$(pcmd ls -${TSORT}p1 "${ddir}" | grep '/$' | head -n 1)" || \
|
|
_exit_err "Failed to list contents of ${ddir}."
|
|
|
|
#
|
|
# clone from old backup, if existing
|
|
#
|
|
if [ "${last_dir}" ]; then
|
|
set -- "$@" "--link-dest=${ddir}/${last_dir}"
|
|
_techo "Hard linking from ${last_dir}"
|
|
fi
|
|
|
|
# set time when we really begin to backup, not when we began to remove above
|
|
destination_date="$(${CDATE})"
|
|
destination_dir="${ddir}/${INTERVAL}.${destination_date}.$$"
|
|
destination_full="${destination}/${INTERVAL}.${destination_date}.$$"
|
|
|
|
# give some info
|
|
_techo "Beginning to backup, this may take some time..."
|
|
|
|
_techo "Creating ${destination_dir} ..."
|
|
pcmd mkdir ${VVERBOSE} "${destination_dir}" || \
|
|
_exit_err "Creating ${destination_dir} failed. Skipping."
|
|
|
|
#
|
|
# added marking in 0.6 (and remove it, if successful later)
|
|
#
|
|
pcmd touch "${destination_dir}.${c_marker}"
|
|
|
|
#
|
|
# the rsync part
|
|
#
|
|
_techo "Transferring files..."
|
|
rsync "$@" "${source}" "${destination_full}"; ret=$?
|
|
_techo "Finished backup (rsync return code: $ret)."
|
|
|
|
#
|
|
# Set modification time (mtime) to current time, if sorting by mtime is enabled
|
|
#
|
|
[ -f "$c_mtime" ] && pcmd touch "${destination_dir}"
|
|
|
|
#
|
|
# Check if rsync exit code indicates failure.
|
|
#
|
|
fail=""
|
|
if [ -f "$c_rsync_failure_codes" ]; then
|
|
while read code ; do
|
|
if [ "$ret" = "$code" ]; then
|
|
fail=1
|
|
fi
|
|
done <"$c_rsync_failure_codes"
|
|
fi
|
|
|
|
#
|
|
# Remove marking here unless rsync failed.
|
|
#
|
|
if [ -z "$fail" ]; then
|
|
pcmd rm "${destination_dir}.${c_marker}" || \
|
|
_exit_err "Removing ${destination_dir}.${c_marker} failed."
|
|
if [ "${ret}" -ne 0 ]; then
|
|
_techo "Warning: rsync exited non-zero, the backup may be broken (see rsync errors)."
|
|
fi
|
|
else
|
|
_techo "Warning: rsync failed with return code $ret."
|
|
fi
|
|
|
|
#
|
|
# post_exec
|
|
#
|
|
if [ -x "${c_post_exec}" ]; then
|
|
_techo "Executing ${c_post_exec} ..."
|
|
"${c_post_exec}"; ret=$?
|
|
_techo "Finished ${c_post_exec}."
|
|
|
|
if [ "${ret}" -ne 0 ]; then
|
|
_exit_err "${c_post_exec} failed."
|
|
fi
|
|
fi
|
|
|
|
# Calculation
|
|
end_s="$(${SDATE})"
|
|
|
|
full_seconds="$((${end_s} - ${begin_s}))"
|
|
hours="$((${full_seconds} / 3600))"
|
|
seconds="$((${full_seconds} - (${hours} * 3600)))"
|
|
minutes="$((${seconds} / 60))"
|
|
seconds="$((${seconds} - (${minutes} * 60)))"
|
|
|
|
_techo "Backup lasted: ${hours}:${minutes}:${seconds} (h:m:s)"
|
|
|
|
) | add_name
|
|
done
|
|
|
|
#
|
|
# Be a good parent and wait for our children, if they are running wild parallel
|
|
#
|
|
if [ "${PARALLEL}" ]; then
|
|
_techo "Waiting for children to complete..."
|
|
wait
|
|
fi
|
|
|
|
#
|
|
# Look for post-exec command (general)
|
|
#
|
|
if [ -x "${CPOSTEXEC}" ]; then
|
|
_techo "Executing ${CPOSTEXEC} ..."
|
|
"${CPOSTEXEC}"; ret=$?
|
|
_techo "Finished ${CPOSTEXEC} (return code: ${ret})."
|
|
|
|
if [ "${ret}" -ne 0 ]; then
|
|
_techo "${CPOSTEXEC} failed."
|
|
fi
|
|
fi
|
|
|
|
rm -f "${TMP}"
|
|
_techo "Finished"
|