Jun 162017
 

Been searching for a tool to streamline ZFS replication between my storage arrays and I think I found it – it’s called syncoid.

Installation

# ubuntu
apt install pv lzop mbuffer libconfig-inifiles-perl git -y
# centos
yum install pv lzop mbuffer perl-Config-IniFiles.noarch git -y


cd /usr/src/
git clone https://github.com/jimsalterjrs/sanoid.git
cp sanoid/syncoid /usr/local/sbin/

Now setup SSH keys for passwordless root login and setup cronjob to fire up /usr/local/sbin/replication-syncoid.sh once a day/week/whenever suits you.

0 0 * * 1   /usr/local/sbin/replication-syncoid.sh|logger

Where /usr/local/sbin/replication-syncoid.sh is

#!/bin/bash
FILESYSTEMS="apps home service vmfs"
LOG=/var/log/wigry-syncoid.log
for i in $FILESYSTEMS; do 
echo "---------------  `date` - syncing $i -------------" >> $LOG 2>&1 
/usr/local/sbin/syncoid -r root@wigry.mielnet.pl:tank/$i cistern/$i >> $LOG 2>&1
echo "---------------  `date` - done $i -------------" >> $LOG 2>&1
done

It gets the job done nicely and saves me from writing my own bash-voodoo-black-magic-fuckery.

Thanks Jim.

Oct 262016
 

Today I was upgrading Dell PERC 6/i Integrated controller firmware on, rather old to put it mildly, PowerEdge 2950 server running Centos 7. Sadly update was failing with following message when I tried firing dup (dell update package for Red Hat Linux SAS-RAID_Firmware_3P52K_LN_6.3.3-0002_X00.BIN):

Oct 26 13:51:15 mielnet-web-dev03 kernel: sasdupie[11976]: segfault at 20 ip 00007fe7b2f3000d sp 00007ffe7d58bb00 error 4 in sasdupie[7fe7b2f0b000+110000]

What is going on? What’s causing segfault? After fiddling and googling I end up doing this:

chmod +x /tmp/SAS-RAID_Firmware_3P52K_LN_6.3.3-0002_X00.BIN 
/tmp/SAS-RAID_Firmware_3P52K_LN_6.3.3-0002_X00.BIN --extract /tmp/dup_extract_dir
cd /tmp/dup_extract_dir
./sasdupie -i -o inv.xml -debug

and after examining /tmp/dup_extract_dir/debug.log it turned out that sasdupie is segfaulting when trying to use libstorelibir.so.5 – so I figured version on system might be just too new. Lets try using a bit older version of this static object located under /opt/dell/srvadmin/lib64/ – it’s part of srvadmin-storelib RPM package by the way, RPM that can be installed from Dell repo.

cd /opt/dell/srvadmin/lib64
rm libstorelibir.so.5
ln -s libstorelibir-3.so libstorelibir.so.5

Keeping my fingers crossed and touching wood I typed using my nose:

/tmp/SAS-RAID_Firmware_3P52K_LN_6.3.3-0002_X00.BIN

Running validation...

PERC 6/i Integrated Controller 0

The version of this Update Package is newer than the currently installed version.
Software application name: PERC 6/i Integrated Controller 0 Firmware
Package version: 6.3.3-0002
Installed version: 6.0.2-0002

................................................
Device: PERC 6/i Integrated Controller 0
  Application: PERC 6/i Integrated Controller 0 Firmware
  The operation was successful.


Nice. No segfaults. Shout-out to Luiz Angelo Daros de Luca.