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5th August 2013
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Makefile for Vermaden's FreeBSD ZFS root install adapted for 4K sector disks
Introduction
What does the Makefile do? The comments at the beginning of the file gives an explanation: Code:
# This BSD makefile merely automates Vermaden's "'ZFS madness / boot # environments" mirrored disk setup. # # For a complete description of this particular ZFS only setup see below. # # The ZFS configuration described by Vermaden does not align the # disk partitions for 'Avanced Format' 4K disks and also does not # instruct ZFS to use 4K blocks for the write and read operations. # # The procedure implemented here does align the EFI/gpt partitions # used on a 4K (8 x 512) # sector boundary. By using the 'gnop' trick # the FreeBSD ZFS implementation is coached to use an 'ashift' value # of 12 (2^12 = 4096) # This value makes ZFS read and write on 4K boundaries # # Credits for the ZFS install procedure: # # Slawomir Wojciech Wojtczak (vermaden) # http://forums.freebsd.org/showthread.php?t=31662 # http://www.daemonforums.org/showthread.php?t=7099 # # Sources and /credits for the 4K alignment issue and gnop hack: # # Warren Block (wblock@) for his numerous posts about partition alignment: # http://forums.freebsd.org (Installation and Storage sections) # http://www.wonkity.com/~wblock/docs/...w_standard_gpt # Ivan Voras for the gnop workaround: # http://ivoras.sharanet.org/blog/tree...or-drives.html # George Kontostanos (gkontos) for using gnop and a ZFS cache file: # http://forums.freebsd.org/showthread.php?t=23544 # http://www.aisecure.net/2012/01/16/rootzfs/
Overview of the Makefile targets The utility ones:
The pre-installation tasks can be performed individually or by using the pre_install target:
The actual installation:
The post-installation tasks done by target post_install:
For the really lazy ones among us there is a target 'all' that does it all: Code:
pre_install: trailer partition gnop4k pool4k export gnop_destroy import \
chk_ashift zfs_options zfs_fs zfs_swap
install: trailer
for THIS in ${INSTALL_SETS} ; do \
tar --unlink -xvpJf $${THIS} -C ${MOUNT} ;\
done
ls -l ${MOUNT}
zpool status ${POOL}
zpool iostat ${POOL}
zfs list
post_install: trailer loader.conf fstab rc.conf zfs_boot zfs_umount mountpoint
all: trailer pre_install install post_install
By changing the makefile variables you can adapt the installation to your wishes. Code:
POOL = super
ROOT_SET = ${POOL}/ROOT
BOOT_SET = ${ROOT_SET}/default
# --- installation file sets
SETS = base.txz kernel.txz
DIR = /usr/freebsd-dist # On FreeBSD liveCD/DVD/memstick
.for X in ${SETS}
INSTALL_SETS += ${DIR}/${X}
.endfor
Code:
DISKTYPE = ada
DISKTYPE = md
.if ${DISKTYPE} == "md"
# --- memory disks see md(4) and mdconfig(8)
# size of disk needs to be at least 64M else you encounter this error:
# "cannot create 'pool': one or more devices is less than the minimum size (64M)"
MD_SIZE = 2g
SWAPSIZE = 256m
DISK_1 = /dev/md1
DISK_2 = /dev/md2
DISKS = ${DISK_1} ${DISK_2}
# --- gpt/EFI labels
LABEL_ZFS = mdisk_
LABEL_BOOT = mdboot
Code:
.else
# --- real spinning rust disks
DISK_1 = /dev/ada1
DISK_2 = /dev/ada2
DISKS = ${DISK_1} ${DISK_2}
SWAPSIZE = 4G
# --- gpt/EFI labels
LABEL_ZFS = SYSTEM_
LABEL_BOOT = BOOT_
.endif
Code:
TMP = /tmp
CACHEFILE = ${TMP}/zpool.cache
TEMPLATE_RC_CONF= ${TMP}/template_rc.conf
MOUNT = /mnt
RC_CONF = ${MOUNT}/etc/rc.conf
LOADER_CONF = ${MOUNT}/boot/loader.conf
FSTAB = ${MOUNT}/etc/fstab
Code:
Code:
Checking for installation sets ... Set /usr/freebsd-dist/base.txz : found! Set /usr/freebsd-dist/kernel.txz : found! Code:
Checking for 'rc.conf' template ... /tmp/template_rc.conf not found exit 100 *** [show] Error code 100 Code:
----------- rc.conf template ---------- cat /tmp/template_rc.conf # ------ rc.conf #defaultrouter=192.168.222.10 hostname='althusser.utp.xnet' network_interfaces='bge0' ifconfig_bge0="SYNCDHCP" # --- daemons inetd_enable=NO sshd_enable=yes sendmail_enable=yes # --- time synchronization ntpd_enable=YES #openntpd_enable=YES
__________________
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump Last edited by J65nko; 8th August 2013 at 09:01 PM. 
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5th August 2013
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Pre-installation steps
For demonstration purpose two memory or RAM disks will be used. Code:
# diskinfo on these disks.Code:
To use this target on one of my disks reporting a 512 sectorsize to the OS but having a stripesize of 4096, I can override the makefile variable DISKS on the command line; Code:
WARNING: the following command will remove all partitioning information from the disks as defined in the makefile. Please make sure that this is correct and double-check the settings you configured by running # make show. You will lose data if the settings refer to the wrong disk.Code:
Code:
Code:
A ZFS storage pool with these freshly created 4K devices is the next step. Code:
Code:
Code:
Code:
Note that for some reason the import does not use the GPT labels, but the partition numbers. I only noticed this when I test with memory disks. With real disks the import uses the labels: Code:
Code:
Code:
Code:
In the original procedure the ZFS swap space is configured after rebooting into the new system, but let us do it now. Code:
__________________
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump Last edited by J65nko; 5th August 2013 at 11:13 PM. Reason: Added WARNING
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5th August 2013
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Installation
Let us go for it. Code:
Post-installation Initializing /boot/loader.conf Code:
Code:
Code:
Code:
Code:
Code:
Code:
__________________
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump Last edited by J65nko; 5th August 2013 at 10:08 PM.
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5th August 2013
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One of the first versions of the makefile without all the whistles and bells like the 4K alignment stuff, and variables:
Code:
DISKS = /dev/ada1 /dev/ada2
DISKS = /dev/md1 /dev/md2
partition:
.for X in ${DISKS}
if gpart show ${X} ; then gpart destroy -F ${X} ; fi
gpart create -s GPT ${X}
NUMBER=$$( echo ${X} | tr -c -d '0-9' ) ;\
gpart add -t freebsd-boot -l bootcode$${NUMBER} -s 128k ${X} ;\
gpart add -t freebsd-zfs -l sys$${NUMBER} ${X}
gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ${X}
.endfor
pool:
zpool create -f -o cachefile=/tmp/zpool.cache sys mirror /dev/gpt/sys*
zpool status
zpool list
options:
zfs set mountpoint=none sys
zfs set checksum=fletcher4 sys
zfs set atime=off sys
zfs create sys/ROOT
zfs create -o mountpoint=/mnt sys/ROOT/default
zpool set bootfs=sys/ROOT/default sys
# ================================================================================
pre_install: partition pool options
install:
cd /usr/freebsd-dist ;\
for X in base.txz kernel.txz; do \
tar --unlink -xpJf $${X} -C /mnt ;\
done
@echo Current directory: $$(pwd)
post_install: zfs_boot loader.conf fstab rc.conf umount mountpoint
all: pre_install install post_install
# ================================================================================
zfs_boot:
cp /tmp/zpool.cache /mnt/boot/zfs/
loader.conf:
echo 'zfs_load=YES' >> /mnt/boot/loader.conf
echo 'vfs.root.mountfrom="zfs:sys/ROOT/default"' >> /mnt/boot/loader.conf
fstab:
# ---- create empty /etc/fstab file
touch /mnt/etc/fstab
rc.conf:
echo 'zfs_enable=YES' >> /mnt/etc/rc.conf
umount:
zfs list
zfs umount -a
mountpoint:
zfs set mountpoint=legacy sys/ROOT/default
zfs list
__________________
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump Last edited by J65nko; 7th August 2013 at 01:43 PM.
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5th August 2013
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Placeholder 4
__________________
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump
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5th August 2013
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Methods to get the Makefile to the FreeBSD live CD session
__________________
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump Last edited by J65nko; 6th August 2013 at 01:05 PM.
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5th August 2013
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The Makefile for downloading. Please rename it to Makefile:
# mv Makefile-ZFS-madness-1.18.txt Makefile
__________________
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump Last edited by J65nko; 8th August 2013 at 12:31 PM.
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| Tags |
| 4k disk, 4k sector alignment, advanced format disks, freebsd, make, makefile, zfs, zfs madness, zfs root |
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