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Update zfs-mk-draid-96drives.sh

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kneutron 2021-07-11 16:28:12 -05:00 committed by GitHub
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1 changed files with 9 additions and 17 deletions
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ZFS/zfs-mk-draid-96drives.sh
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@ -37,6 +37,8 @@ function failexit () {
#pooldisks2=$(echo /dev/sd{n..y})
#pooldisks=$pooldisks1' '$pooldisks2 # need entire set for reset
# NOTE Use in conjunction with ' zfs-drive-slicer.sh ' to create sets
# groups of 6 for convenience, also evenly divides into 24, 48, 72, 96
# (but not 32 [28+4 spares], that gets handled in draid assoc)
pooldisks01=$(echo /dev/sd{b..g}) # a is rootdisk
@ -73,6 +75,7 @@ pooldisks=$pooldisks01' '$pooldisks02' '$pooldisks03' '$pooldisks04' '$pooldisks
#sdaa sdab sdac sdad sdae sdaf sdag sdah
# cre8 drive translation table - NOTE 32 disk config gets overridden vv
# NOTE requires another script
source ~/bin/boojum/draid-pooldisks-assoc.sh $td
# Flame the pool and start over from 0
@ -124,12 +127,6 @@ fi
# zpool create <pool> draid[<parity>][:<data>d][:<children>c][:<spares>s] <vdevs...>
# ex: draid2:4d:1s:11c
# SLOW writing to zstd-3
# draid$rzl:8d:12'c':$spr's' $pooldisks1 \
# draid$rzl:8d:12'c':$spr's' $pooldisks2 \
# cre8 drive translation table
#source ~/bin/boojum/draid-pooldisks-assoc.sh
# TODO EDITME
#iteration=OBM
@ -166,8 +163,6 @@ time zpool create -o autoreplace=on -o autoexpand=on -O atime=off -O compression
|| failexit 101 "Failed to create DRAID"
)
elif [ "$iteration" = "3" ]; then
# compression=zstd-3
# -o ashift=12
# raidz level (usually 2)
rzl=2
# Vspares - this is a 96-drive pool, you DON'T want to skimp!
@ -233,7 +228,6 @@ time zpool create -o autoreplace=on -o autoexpand=on -O atime=off -O compression
)
else
# One Big Mother
# -o ashift=12
# raidz level (usually 2)
rzl=2
# spares - this is a 96-drive pool, you DON'T want to skimp!
@ -244,21 +238,18 @@ else
draid$rzl:24d:$td'c':$spr's' $pooldisks \
|| failexit 101 "Failed to create DRAID"
)
#rc=$?
#[ $rc -gt 0 ] && exit $rc
fi
rc=$?
[ $rc -gt 0 ] && exit $rc
# ^ Need this check because of subshell, will not exit early otherwise
# add hotspares
# add hotspares - TODO uncomment if you want them auto-added
# [ $(zpool list |grep -c "no pools") -eq 0 ] && \
# zpool add $zp spare ${hotspares[@]}
# cre8 datasets
# requires external script in the same PATH
# NOTE requires external script in the same PATH
# going with lz4 so not limited by CPU for compression
zfs-newds.sh 11 $zp shrcompr
zfs-newds.sh 10 $zp notshrcompr
@ -272,7 +263,7 @@ zfs list
df -hT |egrep 'ilesystem|zfs'
zpool status -v |grep draid
echo "NOTE - best practice is to export the pool and # zpool import -a -d $DBI"
echo "NOTE - best practice is to export the pool and # zpool import -a -d $DBI"
date
exit;
@ -830,7 +821,7 @@ NOTE - best practice is to export the pool and # zpool import -a -d /dev/disk/by
-----
As expected, a raidz2 pool with 4 vspares can sustain 6 drive failures per vdev without data loss:
As expected, a raidz2 pool with 4 vspares can sustain 6 drive failures *per vdev* without data loss:
pool: zdraidtest
state: DEGRADED
@ -1203,7 +1194,7 @@ NOTE - best practice is to export the pool and # zpool import -a -d /dev/disk/by
---
The 1st vdev on this pool below got hit by a bus but it is still going strong with all available spares in use
The 1st vdev on this pool below got hit by a bus(!) but it is still going strong with all available spares in use
--and still no data loss:
pool: zdraidtest
@ -1370,6 +1361,7 @@ action: Replace the device using 'zpool replace'.
# unavl
zdraidtest 6
...
spares
draid2-0-0 INUSE currently in use
draid2-0-1 INUSE currently in use