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kneutron 2022-01-27 18:37:48 -06:00 committed by GitHub
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15
ZFS/zfs-drive-slicer-xargs-simplified.sh
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@ -11,7 +11,9 @@
>&2 echo "Pass arg1=total disks in pool -- arg2=how many disks per vdev"
>&2 echo "+ NOTE arg2 ^^ should factor in the RAIDz level 1/2/3 desired to sustain X number"
>&2 echo "+ of failed disks per vdev + vspares, dont go too narrow or will lose capacity"
>&2 echo "NOTE output lines NEED to be the same number of devices to balance"
>&2 echo "NOTE it is Highly Recommended to export the pool after creation with shortnames"
>&2 echo "+ and re-import with -d /dev/disk/by-id or other long form names to avoid issues"
>&2 echo "NOTE output lines NEED to be the same number of devices to balance the pool!"
>&2 echo "DO NOT FORGET to prefix these lines with raidz2, mirror or whatever is applicable!"
>&2 echo "PROTIP: Pipe output to column -t to make it look nice"
>&2 echo "=================================================================================="
@ -143,13 +145,22 @@ slice $arg1 $arg2
#...
#mirror sdt sdu \
# Triple mirroring
# Triple mirroring:
# $ ./zfs-drive-slicer-xargs-simplified.sh 15 3 |while read line; do printf "%s" "mirror $line \\";echo ''; done
#mirror sdb sdc sdd \
#mirror sde sdf sdg \
#...
#mirror sdn sdo sdp \
# should-be faster awk solution:
# ./zfs-drive-slicer-xargs-simplified.sh 90 10 |awk '{ print "raidz2 ", $0, "\\"}'
# same thing a different way:
# edit in place and subsitute the needed text before printing
# ./zfs-drive-slicer-xargs-simplified.sh 90 10 |awk '{ sub(/^/, "raidz2 "); sub(/$/, " \\"); print }'
# ^ regexp - for every line, at beginning of line, prefix with "raidz2 "
# $ regexp - find end of line and print literal backslash, finally display edited line
# 2022.0127 substantially refactored to use xargs and cut for simplicity
# works with bash 3.2.57 osx