Posts Tagged SnapMirror

SnapMirror Setup Script

Mar 14

I had the task of replicating an existing customers filer to their new DR system. This was quite a large system, and as much as creating SnapMirrors isn’t particularly complex, it is time consuming. So as with many things I do, I wrote a script to help my achieve this task quicker, and go have yet another coffee.

You’ll need pre-shared keys setup (as ever), but the rest is prompted for. There’s no data validation (no surprise). The script will output 4 text files, one for creating/restricting all the volumes, one for the “snapmirror.conf”, on to be used in place of “snapmirror.conf” while you are doing the baseline initialization, and finally one to actually initialize the snapmirrors. There’s no intelligence around concurrent streams, so initialization is still a bit of a juggling act and waiting game.

Please let me know if you find this useful.

#!/bin/bash

echo “Please enter the name of the PRIMARY filer: ”
read PRI_FILER

echo “Please enter the name of the DR filer: ”
read DR_FILER

ConnectString=”ssh -c 3des”
#ConnectString=”rsh”

SnapMirrorHour=22
SnapMirrorMinute=0
SnapMirrorStagger=5

echo “” > ${DR_FILER}_filer_volumes.txt
echo “” > ${DR_FILER}_snapmirror.conf
echo “” > ${DR_FILER}_sm_initialize.txt
echo “” > ${DR_FILER}_snapmirror_init.conf

for AGGR in `${ConnectString} $PRI_FILER “aggr status” | awk ‘$2!~/State/{print $1}’`
do
SIZE=`${ConnectString} $PRI_FILER “df -Ah $AGGR” | sed ’s/$[0-9][KMGT]$B/\1/g’ | awk ‘$1!~/.snapshot|Aggregate/{print $2}’`
for VOL in `${ConnectString} $PRI_FILER “aggr show_space $AGGR” | awk ‘$1!~/Space/{print $0}’ | awk ‘$4~/volume|file|none/{print $1}’`
do
echo “vol create ${VOL} -s none ${AGGR} ${SIZE} ” >> ${DR_FILER}_filer_volumes.txt
echo “vol restrict ${VOL}” >> ${DR_FILER}_filer_volumes.txt
echo “snapmirror initialize -S ${PRI_FILER}:${VOL} ${DR_FILER}:${VOL}” >> ${DR_FILER}_sm_initialize.txt
echo “${PRI_FILER}:${VOL} ${DR_FILER}:${VOL} – ${SnapMirrorMinute} ${SnapMirrorHour} * *” >> ${DR_FILER}_snapmirror.conf
echo “${PRI_FILER}:${VOL} ${DR_FILER}:${VOL} – - – - -” >> ${DR_FILER}_snapmirror_init.conf

SnapMirrorMinute=`expr $SnapMirrorMinute + $SnapMirrorStagger` Read more... (335 words, estimated 1:20 mins reading time)

Tags: initialise, initialize, NetApp, setup, SnapMirror

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snapmirror

Jul 7

Posted by Chris Kranz in Manual Pages

Table of Contents

NAME

snapmirror – Log of SnapMirror Activity

SYNOPSIS

/etc/log/snapmirror

DESCRIPTION

The SnapMirror log file contains a log of SnapMirror activity for this filer. The file lives in /etc/log on the root volume of both the source and destination filers. When the option snapmirror.log.enable is set to on, all the SnapMirror activities will be recorded in this log file. See options for details regarding how to enable and disable this option. Every Sunday at 00:00, /etc/log/snapmirror is moved to /etc/log/snapmirror.0, /etc/log/snapmirror.0 is moved to /etc/log/snapmirror.1, and so on. The suffix can go up to 5. This process is called rotation. SnapMirror log entries are saved for a total of six weeks.

Each entry of the /etc/log/snapmirror file is a single line consisting of space-separated fields. All log entries begin with a type field and a timestamp field. The final field may be enclosed by parentheses, in which case it may contain spaces. The timestamp field contains a fixed number of spaces, and as such can be parsed as five space-delimited fields. Which fields appear, and in what order they appear in, is determined by the type field of log entry (which is the first field).

Following is a description of each field.

type Indicate the type of the entry, which also determines the format of the rest of the entry. It can be one of the following values:

log: log facility activity

Format: type timestamp event_info…

sys: system-wide activity

Format: type timestamp event_info…

tgt: snapvault target activity

Format: type timestamp volume target event_info…

src: source activity