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22
ZFS/install-samba.sh Normal file
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#!/bin/bash
apt install samba smbclient cifs-utils
exit;
The following additional packages will be installed:
attr ibverbs-providers libboost-atomic1.67.0 libboost-iostreams1.67.0 libboost-regex1.67.0 libboost-system1.67.0
libboost-thread1.67.0 libcephfs2 libgfapi0 libgfrpc0 libgfxdr0 libglusterfs0 libibverbs1 librados2 libtirpc-common
libtirpc3 python-crypto python-dnspython python-gpg python-ldb python-samba python-tdb samba-common
samba-common-bin samba-dsdb-modules samba-vfs-modules tdb-tools
Suggested packages:
keyutils winbind python-crypto-doc bind9 bind9utils ctdb ldb-tools ntp | chrony smbldap-tools ufw heimdal-clients
The following NEW packages will be installed:
attr cifs-utils ibverbs-providers libboost-atomic1.67.0 libboost-iostreams1.67.0 libboost-regex1.67.0
libboost-system1.67.0 libboost-thread1.67.0 libcephfs2 libgfapi0 libgfrpc0 libgfxdr0 libglusterfs0 libibverbs1
librados2 libtirpc-common libtirpc3 python-crypto python-dnspython python-gpg python-ldb python-samba python-tdb
samba samba-common samba-common-bin samba-dsdb-modules samba-vfs-modules smbclient tdb-tools
0 upgraded, 30 newly installed, 0 to remove and 0 not upgraded.
Need to get 21.4 MB of archives.
After this operation, 81.4 MB of additional disk space will be used.
Do you want to continue? [Y/n] ^C

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ZFS/rescan-scsi-bus.sh Normal file
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#!/bin/bash
# REF: https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c03113986
echo "$(date) - Rescanning scsi bus"
for hba in $(ls -1 /sys/class/scsi_host); do
echo -e -n "$hba \r"
echo "- - -" > /sys/class/scsi_host/${hba}/scan
done
echo ''

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ZFS/zfs-mk-draid.sh Normal file
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#!/bin/bash
echo "$0 - 2021 Dave Bechtel - make a ZFS DRAID pool"
echo "- pass arg1='reset' to destroy test pool"
echo "- pass arg1='fail' and arg2=dev2fail to simulate failure"
# Requires at least zfs 2.1.0
DBI=/dev/disk/by-id
# total disks for pool / children
td=24
# raidz level
rzl=2
# spares
spr=2
# TODO EDITME
zp=zdraidtest
zps=`zpool status -v |awk 'NF>0'`
pooldisks=$(echo /dev/sd{b..y})
# sdb sdc sdd sde sdf sdg sdh sdi sdj sdk sdl sdm sdn sdo sdp sdq sdr sds sdt sdu sdv sdw sdx sdy
# extending to 32 disks
#pooldisks2=$(echo /dev/sda{a..h})
#sdaa sdab sdac sdad sdae sdaf sdag sdah
# failexit.mrg
function failexit () {
echo '! Something failed! Code: '"$1 $2" # code # (and optional description)
exit $1
}
if [ "$1" = "reset" ]; then
zpool destroy $zp
for d in $pooldisks; do
echo -e -n "o Clearing label for disk $d\r"
zpool labelclear "$d"1
done
zpool status -v
exit; # early
fi
if [ "$1" = "fail" ]; then
echo "$(date) - Simulating disk failure for $(ls -l $DBI |grep $2)"
echo offline > /sys/block/$2/device/state
cat /sys/block/$2/device/state
$zps # zpool status -v |awk 'NF>0'
exit; # early
fi
# zpool create <pool> draid[<parity>][:<data>d][:<children>c][:<spares>s] <vdevs...>
# ex: draid2:4d:1s:11c
( set -x
time zpool create -o ashift=12 -o autoexpand=on -O atime=off -O compression=zstd-3 \
$zp \
draid$rzl:5d:$td'c':$spr's' $pooldisks \
|| failexit 101 "Failed to create DRAID"
)
# requires external script in the same PATH
zfs-newds-zstd.sh 11 $zp shrcompr
zfs-newds-zstd.sh 10 $zp notshrcompr
$zps # zpool status -v |awk 'NF>0'
zpool list
zfs list
df -hT |egrep 'ilesystem|zfs'
echo "NOTE - best practice is to export the pool and # zpool import -a -d $DBI"
date
exit;
# REFS:
https://openzfs.github.io/openzfs-docs/Basic%20Concepts/dRAID%20Howto.html
https://www.reddit.com/r/zfs/comments/lnoh7v/im_trying_to_understand_how_draid_works_but_im/
https://insider-voice.com/a-deep-dive-into-the-new-openzfs-2-1-distributed-raid-topology/
https://docs.google.com/presentation/d/1uo0nBfY84HIhEqGWEx-Tbm8fPbJKtIP3ICo4toOPcJo/edit#slide=id.g9d6b9fd59f_0_27
Group size must divide evenly into draid size
E.g., 30 drives can only support
3 drive group
5 drive group
10 drive group
15 drive group
Only need to specify group size at creation
Group Size - the number of pieces the data is partitioned into plus the amount of parity
o The amount of parity determines the redundancy
o The number of data pieces determines the overhead
dRAID Size - the number of drives used for data
(Does not include spare drives)
-----
# zpool create zdraidtest draid2:5d:24c:2s /dev/sdb /dev/sdc /dev/sdd \
/dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi /dev/sdj /dev/sdk /dev/sdl \
/dev/sdm /dev/sdn /dev/sdo /dev/sdp /dev/sdq /dev/sdr /dev/sds /dev/sdt \
/dev/sdu /dev/sdv /dev/sdw /dev/sdx /dev/sdy
real 0m4.108s
user 0m0.024s
sys 0m0.162s
pool: zdraidtest
state: ONLINE
config:
NAME STATE READ WRITE CKSUM
zdraidtest ONLINE 0 0 0
draid2:5d:24c:2s-0 ONLINE 0 0 0
sdb ONLINE 0 0 0
sdc ONLINE 0 0 0
sdd ONLINE 0 0 0
sde ONLINE 0 0 0
sdf ONLINE 0 0 0
sdg ONLINE 0 0 0
sdh ONLINE 0 0 0
sdi ONLINE 0 0 0
sdj ONLINE 0 0 0
sdk ONLINE 0 0 0
sdl ONLINE 0 0 0
sdm ONLINE 0 0 0
sdn ONLINE 0 0 0
sdo ONLINE 0 0 0
sdp ONLINE 0 0 0
sdq ONLINE 0 0 0
sdr ONLINE 0 0 0
sds ONLINE 0 0 0
sdt ONLINE 0 0 0
sdu ONLINE 0 0 0
sdv ONLINE 0 0 0
sdw ONLINE 0 0 0
sdx ONLINE 0 0 0
sdy ONLINE 0 0 0
spares
draid2-0-0 AVAIL
draid2-0-1 AVAIL
errors: No known data errors
NOTE with ashift not specified (virtualbox simulates 512-sector disks):
Filesystem Type Size Used Avail Use% Mounted on
zdraidtest zfs 29T 128K 29T 1% /zdraidtest
with ashift=12:
zdraidtest zfs 26T 512K 26T 1% /zdraidtest
NOTE if you simulate/take a drive offline, you cant just "echo online" to it later, that wont bring it back up!
try rescan-scsi-bus.sh or reboot
FIX: if a drive is offline, replace it temporarily with a builtin spare:
# zpool replace zdraidtest sdd draid2-0-0
# zps
pool: zdraidtest
state: DEGRADED
status: One or more devices could not be used because the label is missing or
invalid. Sufficient replicas exist for the pool to continue
functioning in a degraded state.
action: Replace the device using 'zpool replace'.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-4J
scan: resilvered 0B in 00:00:00 with 0 errors on Sat Jul 3 14:43:51 2021
config:
NAME STATE READ WRITE CKSUM
zdraidtest DEGRADED 0 0 0
draid2:5d:24c:2s-0 DEGRADED 0 0 0
sdb ONLINE 0 0 0
sdc ONLINE 0 0 0
spare-2 DEGRADED 0 0 0
sdd UNAVAIL 0 0 0
draid2-0-0 ONLINE 0 0 0
sde ONLINE 0 0 0
sdf ONLINE 0 0 0
sdg ONLINE 0 0 0
sdh ONLINE 0 0 0
sdi ONLINE 0 0 0
sdj ONLINE 0 0 0
sdk ONLINE 0 0 0
sdl ONLINE 0 0 0
sdm ONLINE 0 0 0
sdn ONLINE 0 0 0
sdo ONLINE 0 0 0
sdp ONLINE 0 0 0
sdq ONLINE 0 0 0
sdr ONLINE 0 0 0
sds ONLINE 0 0 0
sdt ONLINE 0 0 0
sdu ONLINE 0 0 0
sdv ONLINE 0 0 0
sdw ONLINE 0 0 0
sdx ONLINE 0 0 0
sdy ONLINE 0 0 0
spares
draid2-0-0 INUSE currently in use
draid2-0-1 AVAIL
errors: No known data errors
HOWTO fix the above situation with the same disk (you rebooted / it came back online) and decouple the in-use spare:
zpool export -a
fdisk -l /dev/sdd # scsi-SATA_VBOX_HARDDISK_VBbcc6c97e-f68b8368
zpool labelclear /dev/sdd
zpool labelclear -f /dev/sdd1
zpool import -a
zpool status -v # This will show a degraded pool with a missing disk
# This wont work but gives useful info:
zpool replace zdraidtest spare-2 scsi-SATA_VBOX_HARDDISK_VBbcc6c97e-f68b8368 # got error, use detach
zpool detach zdraidtest 2582498653363374334 # this was listed as UNAVAIL with the spare in-use underneath it
zpool status -v # should now show only the spare where sdd was
# we labelcleared it so it should be ready for re-use;
# if you want to be really thorough you can DD zeros to the entire drive but not really necessary
zpool replace zdraidtest draid2-0-0 scsi-SATA_VBOX_HARDDISK_VBbcc6c97e-f68b8368 # same disk but labelcleared
zpool status -v

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#!/bin/bash
# cre8 a new ZFS dataset with options
echo "$0 opt1=(1)compression opt1=(1)sharesmb, 0 == OFF zpool dirname"
# TODO -e /tmp/infile read it and process it
source ~/bin/failexit.mrg
logfile=/root/boojum-zfs-newds.log
# TODO editme
#zp=zredpool2; myds=home/vmtmpdir/vmware-virtmachines
zp="$2"; myds="$3"
user=user
# defaults
compr=zstd-3
shrwin=off
# opt1=compression, opt2=sharesmb
case "$1" in
"10" )
# use defaults
shrwin=off
;;
"11" )
shrwin="on -o xattr=sa "
;;
"01" )
compr=off; shrwin="on -o xattr=sa "
;;
"00" )
compr=off; shrwin=off
;;
"" )
# no arg passed; print help and exit
failexit 101 "No arg passed!"
;;
* )
failexit 201 "Invalid arg passed, +$1+ not recognized"
;;
esac
# trace on
(set -x
zfs create -o \
atime=off -o compression=$compr -o sharesmb=${shrwin} -o recordsize=1024k \
$zp/$myds || failexit 99 "! Failed to create ZFS $zp/$myds"
)
echo "`date` + $zp/$myds + compr=$compr:shr=$shrwin + owner:$user" >> $logfile
# NOTE does not take into account alt.mountpoints like /home!
chown -v $user /$zp/$myds; ls -al /$zp/$myds
#df -h /$zp/$myds
df -hT |head -n 1
df -hT |grep $myds
exit;
# MAC mods
/var/root/bin/boojum/zfs-newds.sh: line 57: /root/boojum-zfs-newds.log: No such file or directory
chown: /zwdgreentera/dvnotshrcompr: No such file or directory
ls: /zwdgreentera/dvnotshrcompr: No such file or directory
Filesystem Size Used Avail Capacity iused ifree %iused Mounted on
zwdgreentera/dvnotshrcompr 449Gi 324Ki 449Gi 1% 10 942667768 0% /Volumes/zwdgreentera/dvnotshrcompr
40 root ~ # pwd
/var/root