mirror of
https://github.com/kneutron/ansitest.git
synced 2025-01-16 04:42:55 +08:00
500 lines
20 KiB
Bash
500 lines
20 KiB
Bash
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#!/bin/bash
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echo "$0 - 2021 Dave Bechtel - make a ZFS DRAID pool"
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echo "- pass arg1='reset' to destroy test pool"
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echo "- pass arg1='fail' and arg2=dev2fail to simulate failure"
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# Requires at least zfs 2.1.0
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DD=/dev/disk
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DBI=/dev/disk/by-id
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# total disks for pool / children
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td=24 # 26 - root and 1 spare
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# raidz level (usually 2)
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rzl=2
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# spares - per vdev
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spr=1
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# TODO EDITME
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zp=zdraidtest
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function zps () {
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zpool status -v |awk 'NF>0'
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}
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#pooldisks=$(echo /dev/sd{b..y})
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#pooldisks1=$(echo /dev/sd{b..m})
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#pooldisks2=$(echo /dev/sd{n..y})
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#pooldisks=$pooldisks1' '$pooldisks2 # need entire set for reset
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pooldisks1=$(echo /dev/sd{b..i}) # bcdefghi
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pooldisks2=$(echo /dev/sd{j..q}) # jklmnopq
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pooldisks3=$(echo /dev/sd{r..y}) # rstuvwxy # z is phys spare
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pooldisks=$pooldisks1' '$pooldisks2' '$pooldisks3 # need entire set for reset
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#pooldisks=$pooldisks1' '$pooldisks2' '$pooldisks3' '$pooldisks4' '$pooldisks5' '$pooldisks6 # need entire set for reset
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# sdb sdc sdd sde sdf sdg sdh sdi sdj sdk sdl sdm sdn sdo sdp sdq sdr sds sdt sdu sdv sdw sdx sdy
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# 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
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# D D D Z2 Z2 S
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# extending to 32 disks
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#pooldisks2=$(echo /dev/sda{a..h})
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#sdaa sdab sdac sdad sdae sdaf sdag sdah
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# failexit.mrg
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function failexit () {
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echo '! Something failed! Code: '"$1 $2" # code # (and optional description)
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exit $1
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}
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if [ "$1" = "reset" ]; then
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zpool destroy $zp
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for d in $pooldisks; do
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echo -e -n "o Clearing label for disk $d \r"
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zpool labelclear -f "$d"1
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done
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echo ''
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zpool status -v
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exit; # early
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fi
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if [ "$1" = "fail" ]; then
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# NOTE we do NO error checking here, so if you fail your ROOT DISK, THAT'S ON YOU!
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echo "$(date) - Simulating disk failure for $2 $(ls -lR $DD |grep $2)" |tee |logger
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echo offline > /sys/block/$2/device/state
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cat /sys/block/$2/device/state |tee |logger
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time dd if=/dev/urandom of=/$zp/^^tmpfileDELME bs=1M count=1; sync
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# force a write; if not work, try scrub
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zps
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exit; # early
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fi
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# zpool create <pool> draid[<parity>][:<data>d][:<children>c][:<spares>s] <vdevs...>
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# ex: draid2:4d:1s:11c
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# SLOW writing to zstd-3
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# draid$rzl:8d:12'c':$spr's' $pooldisks1 \
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# draid$rzl:8d:12'c':$spr's' $pooldisks2 \
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iteration=3
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if [ "$iteration" = "1" ]; then
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# compression=zstd-3
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# -o ashift=12
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( set -x
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time zpool create -o autoexpand=on -o autoreplace=on -O atime=off -O compression=lz4 \
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$zp \
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draid$rzl:5d:8'c':$spr's' $pooldisks1 \
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draid$rzl:5d:8'c':$spr's' $pooldisks2 \
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draid$rzl:5d:8'c':$spr's' $pooldisks3 \
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|| failexit 101 "Failed to create DRAID"
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)
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elif [ "$iteration" = "2" ]; then
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# raidz level (usually 2)
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rzl=1
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# spares - per vdev
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spr=1
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( set -x
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time zpool create -o autoexpand=on -o autoreplace=on -O atime=off -O compression=lz4 \
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$zp \
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draid$rzl:6d:8'c':$spr's' $pooldisks1 \
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draid$rzl:6d:8'c':$spr's' $pooldisks2 \
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draid$rzl:6d:8'c':$spr's' $pooldisks3 \
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|| failexit 101 "Failed to create DRAID"
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)
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elif [ "$iteration" = "3" ]; then
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# This appears to be a "useless" config, you gain nothing apparent by going down to 5D
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# raidz level (usually 2)
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rzl=1
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# spares - per vdev
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spr=1
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( set -x
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time zpool create -o autoexpand=on -o autoreplace=on -O atime=off -O compression=lz4 \
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$zp \
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draid$rzl:5d:8'c':$spr's' $pooldisks1 \
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draid$rzl:5d:8'c':$spr's' $pooldisks2 \
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draid$rzl:5d:8'c':$spr's' $pooldisks3 \
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|| failexit 101 "Failed to create DRAID"
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)
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else
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# One Big Mother
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# -o ashift=12
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# raidz level (usually 2)
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rzl=2
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# spares
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spr=2
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( set -x
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time zpool create -o autoexpand=on -O atime=off -O compression=lz4 \
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$zp \
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draid$rzl:6d:$td'c':$spr's' $pooldisks \
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|| failexit 101 "Failed to create DRAID"
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)
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fi
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rc=$?
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[ $rc -gt 0 ] && exit $rc
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# ^ Need this check because of subshell, will not exit early otherwise
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# The below will not work: gets error
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# "requested number of dRAID data disks per group 6 is too high, at most 3 disks are available for data"
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#( set -x
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#time zpool create -o ashift=12 -o autoexpand=on -O atime=off -O compression=lz4 \
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# $zp \
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# draid$rzl:6d:6'c':$spr's' $pooldisks1 \
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# draid$rzl:6d:6'c':$spr's' $pooldisks2 \
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# draid$rzl:6d:6'c':$spr's' $pooldisks3 \
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# draid$rzl:6d:6'c':$spr's' $pooldisks4 \
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#|| failexit 101 "Failed to create DRAID"
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#)
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# requires external script in the same PATH
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# going with lz4 so not limited by CPU for compression
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zfs-newds.sh 11 $zp shrcompr
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zfs-newds.sh 10 $zp notshrcompr
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zfs-newds.sh 00 $zp notshrnotcompr
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zps
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zpool list
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zfs list
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df -hT |egrep 'ilesystem|zfs'
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# cre8 drive translation table
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draid-pooldisks-assoc.sh &
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echo "NOTE - best practice is to export the pool and # zpool import -a -d $DBI"
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date
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exit;
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# REFS:
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https://openzfs.github.io/openzfs-docs/Basic%20Concepts/dRAID%20Howto.html
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https://klarasystems.com/articles/openzfs-draid-finally/
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https://www.reddit.com/r/zfs/comments/lnoh7v/im_trying_to_understand_how_draid_works_but_im/
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https://insider-voice.com/a-deep-dive-into-the-new-openzfs-2-1-distributed-raid-topology/
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https://docs.google.com/presentation/d/1uo0nBfY84HIhEqGWEx-Tbm8fPbJKtIP3ICo4toOPcJo/edit#slide=id.g9d6b9fd59f_0_27
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Group size must divide evenly into draid size
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E.g., 30 drives can only support
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3 drive group
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5 drive group
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10 drive group
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15 drive group
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Only need to specify group size at creation
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Group Size - the number of pieces the data is partitioned into plus the amount of parity
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o The amount of parity determines the redundancy
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o The number of data pieces determines the overhead
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dRAID Size - the number of drives used for data
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(Does not include spare drives)
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-----
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# make a draid with raidz2, x4 VDEVs, 3 data disks, 6 children, 1 spare
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zpool create -o ashift=12 -o autoexpand=on -O atime=off -O compression=lz4 \
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zdraidtest \
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draid2:3d:6c:1s /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg \
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draid2:3d:6c:1s /dev/sdh /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm \
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draid2:3d:6c:1s /dev/sdn /dev/sdo /dev/sdp /dev/sdq /dev/sdr /dev/sds \
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draid2:3d:6c:1s /dev/sdt /dev/sdu /dev/sdv /dev/sdw /dev/sdx /dev/sdy
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real 0m3.515s
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user 0m0.039s
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sys 0m0.136s
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+ zfs create -o atime=off -o compression=lz4 -o sharesmb=on -o xattr=sa -o recordsize=1024k zdraidtest/shrcompr
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cannot share 'zdraidtest/shrcompr: system error': SMB share creation failed
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filesystem successfully created, but not shared
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changed ownership of '/zdraidtest/shrcompr' from root to user
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Filesystem Type Size Used Avail Use% Mounted on
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zdraidtest/shrcompr zfs 21T 1.0M 21T 1% /zdraidtest/shrcompr
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+ zfs create -o atime=off -o compression=lz4 -o sharesmb=off -o recordsize=1024k zdraidtest/notshrcompr
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changed ownership of '/zdraidtest/notshrcompr' from root to user
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Filesystem Type Size Used Avail Use% Mounted on
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zdraidtest/notshrcompr zfs 21T 1.0M 21T 1% /zdraidtest/notshrcompr
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pool: zdraidtest
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state: ONLINE
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config:
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NAME STATE READ WRITE CKSUM
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zdraidtest ONLINE 0 0 0
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draid2:3d:6c:1s-0 ONLINE 0 0 0
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sdb ONLINE 0 0 0
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sdc ONLINE 0 0 0
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sdd ONLINE 0 0 0
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sde ONLINE 0 0 0
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sdf ONLINE 0 0 0
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sdg ONLINE 0 0 0
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draid2:3d:6c:1s-1 ONLINE 0 0 0
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sdh ONLINE 0 0 0
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sdi ONLINE 0 0 0
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sdj ONLINE 0 0 0
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sdk ONLINE 0 0 0
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sdl ONLINE 0 0 0
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sdm ONLINE 0 0 0
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draid2:3d:6c:1s-2 ONLINE 0 0 0
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sdn ONLINE 0 0 0
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sdo ONLINE 0 0 0
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sdp ONLINE 0 0 0
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sdq ONLINE 0 0 0
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sdr ONLINE 0 0 0
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sds ONLINE 0 0 0
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draid2:3d:6c:1s-3 ONLINE 0 0 0
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sdt ONLINE 0 0 0
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sdu ONLINE 0 0 0
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sdv ONLINE 0 0 0
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sdw ONLINE 0 0 0
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sdx ONLINE 0 0 0
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sdy ONLINE 0 0 0
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spares
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draid2-0-0 AVAIL
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draid2-1-0 AVAIL
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draid2-2-0 AVAIL
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draid2-3-0 AVAIL
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errors: No known data errors
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NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
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zdraidtest 36.4T 5.61M 36.4T - - 0% 0% 1.00x ONLINE -
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NAME USED AVAIL REFER MOUNTPOINT
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zdraidtest 2.24M 21.0T 278K /zdraidtest
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zdraidtest/notshrcompr 278K 21.0T 278K /zdraidtest/notshrcompr
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zdraidtest/shrcompr 278K 21.0T 278K /zdraidtest/shrcompr
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Filesystem Type Size Used Avail Use% Mounted on
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zdraidtest zfs 21T 384K 21T 1% /zdraidtest
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zdraidtest/shrcompr zfs 21T 1.0M 21T 1% /zdraidtest/shrcompr
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zdraidtest/notshrcompr zfs 21T 1.0M 21T 1% /zdraidtest/notshrcompr
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NOTE - best practice is to export the pool and # zpool import -a -d /dev/disk/by-id
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-----
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A different iteration - raidz1 with 4 data disks, 6 children, 1 spare = more space available
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since we are using small (2TB) disks this should not be an issue
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zpool create -o ashift=12 -o autoexpand=on -O atime=off -O compression=lz4 \
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zdraidtest \
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draid1:4d:6c:1s /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg \
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draid1:4d:6c:1s /dev/sdh /dev/sdi /dev/sdj /dev/sdk /dev/sdl /dev/sdm \
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draid1:4d:6c:1s /dev/sdn /dev/sdo /dev/sdp /dev/sdq /dev/sdr /dev/sds \
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draid1:4d:6c:1s /dev/sdt /dev/sdu /dev/sdv /dev/sdw /dev/sdx /dev/sdy
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real 0m3.288s
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user 0m0.034s
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sys 0m0.162s
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+ zfs create -o atime=off -o compression=lz4 -o sharesmb=on -o xattr=sa -o recordsize=1024k zdraidtest/shrcompr
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cannot share 'zdraidtest/shrcompr: system error': SMB share creation failed
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filesystem successfully created, but not shared
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changed ownership of '/zdraidtest/shrcompr' from root to user
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Filesystem Type Size Used Avail Use% Mounted on
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zdraidtest/shrcompr zfs 29T 1.0M 29T 1% /zdraidtest/shrcompr
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+ zfs create -o atime=off -o compression=lz4 -o sharesmb=off -o recordsize=1024k zdraidtest/notshrcompr
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changed ownership of '/zdraidtest/notshrcompr' from root to user
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Filesystem Type Size Used Avail Use% Mounted on
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zdraidtest/notshrcompr zfs 29T 1.0M 29T 1% /zdraidtest/notshrcompr
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pool: zdraidtest
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state: ONLINE
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config:
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NAME STATE READ WRITE CKSUM
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zdraidtest ONLINE 0 0 0
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draid1:4d:6c:1s-0 ONLINE 0 0 0
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sdb ONLINE 0 0 0
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sdc ONLINE 0 0 0
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sdd ONLINE 0 0 0
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sde ONLINE 0 0 0
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sdf ONLINE 0 0 0
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sdg ONLINE 0 0 0
|
||
|
|
draid1:4d:6c:1s-1 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
|
||
|
|
draid1:4d:6c:1s-2 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
|
||
|
|
draid1:4d:6c:1s-3 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
|
||
|
|
draid1-0-0 AVAIL
|
||
|
|
draid1-1-0 AVAIL
|
||
|
|
draid1-2-0 AVAIL
|
||
|
|
draid1-3-0 AVAIL
|
||
|
|
errors: No known data errors
|
||
|
|
|
||
|
|
NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
|
||
|
|
zdraidtest 36.4T 5.43M 36.4T - - 0% 0% 1.00x ONLINE -
|
||
|
|
|
||
|
|
NAME USED AVAIL REFER MOUNTPOINT
|
||
|
|
zdraidtest 3.00M 28.9T 383K /zdraidtest
|
||
|
|
zdraidtest/notshrcompr 383K 28.9T 383K /zdraidtest/notshrcompr
|
||
|
|
zdraidtest/shrcompr 383K 28.9T 383K /zdraidtest/shrcompr
|
||
|
|
|
||
|
|
Filesystem Type Size Used Avail Use% Mounted on
|
||
|
|
zdraidtest zfs 29T 384K 29T 1% /zdraidtest
|
||
|
|
zdraidtest/shrcompr zfs 29T 1.0M 29T 1% /zdraidtest/shrcompr
|
||
|
|
zdraidtest/notshrcompr zfs 29T 1.0M 29T 1% /zdraidtest/notshrcompr
|
||
|
|
|
||
|
|
NOTE - best practice is to export the pool and # zpool import -a -d /dev/disk/by-id
|
||
|
|
|
||
|
|
-----
|
||
|
|
|
||
|
|
Here is a simulated severely degraded pool with multiple drive failures and a spare in use,
|
||
|
|
with 2 failed disks in the same column - still chugging along:
|
||
|
|
|
||
|
|
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 716M in 00:00:13 with 0 errors on Sat Jul 3 17:18:21 2021
|
||
|
|
config:
|
||
|
|
NAME STATE READ WRITE CKSUM
|
||
|
|
zdraidtest DEGRADED 0 0 0
|
||
|
|
draid1:4d:6c:1s-0 DEGRADED 0 0 0
|
||
|
|
sdb ONLINE 0 0 0
|
||
|
|
sdc ONLINE 0 0 0
|
||
|
|
sdd UNAVAIL 0 0 0
|
||
|
|
sde ONLINE 0 0 0
|
||
|
|
sdf ONLINE 0 0 0
|
||
|
|
sdg ONLINE 0 0 0
|
||
|
|
draid1:4d:6c:1s-1 DEGRADED 0 0 0
|
||
|
|
sdh ONLINE 0 0 0
|
||
|
|
sdi ONLINE 0 0 0
|
||
|
|
sdj UNAVAIL 0 0 0
|
||
|
|
sdk ONLINE 0 0 0
|
||
|
|
sdl ONLINE 0 0 0
|
||
|
|
sdm ONLINE 0 0 0
|
||
|
|
draid1:4d:6c:1s-2 DEGRADED 0 0 0
|
||
|
|
sdn ONLINE 0 0 0
|
||
|
|
sdo ONLINE 0 0 0
|
||
|
|
sdp ONLINE 0 0 0
|
||
|
|
sdq ONLINE 0 0 0
|
||
|
|
sdr UNAVAIL 0 0 0
|
||
|
|
sds ONLINE 0 0 0
|
||
|
|
draid1:4d:6c:1s-3 DEGRADED 0 0 0
|
||
|
|
sdt UNAVAIL 0 0 0
|
||
|
|
sdu ONLINE 0 0 0
|
||
|
|
sdv ONLINE 0 0 0
|
||
|
|
sdw ONLINE 0 0 0
|
||
|
|
sdx ONLINE 0 0 0
|
||
|
|
spare-5 DEGRADED 0 0 0
|
||
|
|
sdy UNAVAIL 0 0 0
|
||
|
|
draid1-3-0 ONLINE 0 0 0
|
||
|
|
spares
|
||
|
|
draid1-0-0 AVAIL
|
||
|
|
draid1-1-0 AVAIL
|
||
|
|
draid1-2-0 AVAIL
|
||
|
|
draid1-3-0 INUSE currently in use
|
||
|
|
errors: No known data errors
|
||
|
|
|
||
|
|
NOTE that unless an extra disk is added to the system, the virtual spares for draid1:4d:6c:1s-3 are all burned up;
|
||
|
|
if ANY of sdu-sdx also fails at this point, we will have a dead pool.
|
||
|
|
Spares for draid1-0-0, 1-1-0 and 1-2-0 CANNOT be used for column 3.
|
||
|
|
|
||
|
|
-----
|
||
|
|
|
||
|
|
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 (sdd) but labelcleared
|
||
|
|
zpool status -v
|