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more commenting and actual howto

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kneutron 2022-11-13 08:40:51 -06:00 committed by GitHub
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8
ZFS/mount-zvol-partitioned-as-disk.sh
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@ -5,13 +5,19 @@
exit;
# This is for when you have a 64GB 'dd' backup and want to access the partitions without restoring to original media
# dd if=/dev/sdXX of=dd-pny-64gig-b4-reimage-with-memtest-20221108.dd bs=1M
zp=zseatera2
size=64 # GB
zfs create -sV "$size"g $zp/zvol01
# restore to compressed zvol (compression is inherited from pool level but can be set OTF)
# zfs set compression=zstd-3 $zp/zvol01
# time dd if=dd-pny-64gig-b4-reimage-with-memtest-20221108.dd of=/dev/zvol/$zp/zvol01 bs=1M
fdisk -l /dev/zvol/$zp/zvol01
# ISSUE:
# mount /dev/zvol/zseatera2/zvol01p5 /mnt/tmp
#mount: special device /dev/zvol/zseatera2/zvol01p5 does not exist
@ -22,7 +28,7 @@ losetup
#NAME SIZELIMIT OFFSET AUTOCLEAR RO BACK-FILE DIO
#/dev/loop0 0 0 0 0 /dev/zd0 0
# TODO grep ls /dev/zvol/$zp/zvol01 for the right one, its a symlink
mydev=$(losetup |grep zd0 |awk '{print $1}')
fdisk -l $mydev # /dev/loop0