I have a new TrueNAS-12.0-U1 system and am trying to do a one-time migration of a dataset from the old system. I used the netcat method for zfs send / receive of 11TB of data. It chugged along for about 30 hours. After the nc activity finished, I just killed the zfs receive process. After this, I'm confused about what is actually going on with the dataset / file system / pool. I don't see my data in the destination dataset (pool1-z2/media) but there is indication that the space is in use by that dataset.
Still don't have a great understanding of some of the concepts but trying to figure it out!
Send:
Receive:
For zfs list -o space, it shows that pool1-z2/media is 11.0T used but is marked as "USEDCHILD". I see nothing if I look in the filesystem for that mount point. Where the heck is this data? Wonder if I need to import or mount it somehow? The zfs receive output indicates it was saving it to a snapshot I think? There aren't any snapshots on the new system.
However just looking at the file system utilization its like that 11TB I transferred is not even a part of that file system. pool1-z2/media shows total size of 7.3 TB (what is left for the pool after the 11TB transfer) and nothing used. Where did it go? Can I mount it or recover somehow?
Still don't have a great understanding of some of the concepts but trying to figure it out!
Send:
Code:
root@freenas[~]# zfs send nasvol/supernas-cifs@auto-20210219.0700-2w | mbuffer -q -s 128K -m 1G | pv -b | nc 192.168.1.5 8000 mbuffer: warning: allocating more than half of available memory 11.2TiB
Receive:
Code:
root@nas02[~]# nc -l 8000 | mbuffer -q -s 128k -m 1G | pv -rtab | zfs receive -s -vF pool1-z2/media mbuffer: warning: allocating more than half of available memory receiving full stream of nasvol/supernas-cifs@auto-20210219.0700-2w into pool1-z2/media@auto-20210219.0700-2w ^C.2TiB 32:52:43 [0.00 B/s] [99.0MiB/s] /s] mbuffer: warning: error during output to <stdout>: canceled
For zfs list -o space, it shows that pool1-z2/media is 11.0T used but is marked as "USEDCHILD". I see nothing if I look in the filesystem for that mount point. Where the heck is this data? Wonder if I need to import or mount it somehow? The zfs receive output indicates it was saving it to a snapshot I think? There aren't any snapshots on the new system.
However just looking at the file system utilization its like that 11TB I transferred is not even a part of that file system. pool1-z2/media shows total size of 7.3 TB (what is left for the pool after the 11TB transfer) and nothing used. Where did it go? Can I mount it or recover somehow?
Code:
root@nas02[/]# zfs list -o space NAME AVAIL USED USEDSNAP USEDDS USEDREFRESERV USEDCHILD freenas-boot 26.4G 2.17G 0B 23K 0B 2.17G freenas-boot/ROOT 26.4G 2.16G 0B 23K 0B 2.16G freenas-boot/ROOT/FreeNAS-12.0-U1 26.4G 2.16G 1.01G 1.15G 0B 0B freenas-boot/ROOT/Initial-Install 26.4G 1K 0B 1K 0B 0B freenas-boot/ROOT/default 26.4G 231K 0B 231K 0B 0B pool1-z2 7.31T 13.2T 0B 174K 0B 13.2T pool1-z2/.system 7.31T 801M 0B 753M 0B 48.9M pool1-z2/.system/configs-e6cb7c26dd1243d3962c3f87f9eddfe5 7.31T 8.54M 0B 8.54M 0B 0B pool1-z2/.system/cores 1010M 14.0M 0B 14.0M 0B 0B pool1-z2/.system/rrd-e6cb7c26dd1243d3962c3f87f9eddfe5 7.31T 23.8M 0B 23.8M 0B 0B pool1-z2/.system/samba4 7.31T 500K 0B 500K 0B 0B pool1-z2/.system/services 7.31T 140K 0B 140K 0B 0B pool1-z2/.system/syslog-e6cb7c26dd1243d3962c3f87f9eddfe5 7.31T 1.79M 0B 1.79M 0B 0B pool1-z2/.system/webui 7.31T 140K 0B 140K 0B 0B pool1-z2/esxi-zvol01 9.46T 2.16T 0B 12.3G 2.15T 0B pool1-z2/general 7.31T 140K 0B 140K 0B 0B pool1-z2/home-directories 20.0G 227K 0B 227K 0B 0B pool1-z2/iso-images 7.31T 140K 0B 140K 0B 0B pool1-z2/media 7.31T 11.0T 0B 145K 0B 11.0T pool1-z2/test-encrypted-dataset 10.0G 546K 0B 279K 0B 267K pool1-z2/test-encrypted-dataset/blah 10.0G 267K 0B 267K 0B 0B
Code:
root@nas02[/]# df -h Filesystem Size Used Avail Capacity Mounted on freenas-boot/ROOT/FreeNAS-12.0-U1 28G 1.2G 26G 4% / devfs 1.0K 1.0K 0B 100% /dev tmpfs 32M 9.7M 22M 30% /etc tmpfs 4.0M 8.0K 4.0M 0% /mnt tmpfs 11G 32M 11G 0% /var fdescfs 1.0K 1.0K 0B 100% /dev/fd pool1-z2 7.3T 175K 7.3T 0% /mnt/pool1-z2 pool1-z2/home-directories 20G 227K 20G 0% /mnt/pool1-z2/home-directories pool1-z2/general 7.3T 140K 7.3T 0% /mnt/pool1-z2/general pool1-z2/iso-images 7.3T 140K 7.3T 0% /mnt/pool1-z2/iso-images pool1-z2/media 7.3T 146K 7.3T 0% /mnt/pool1-z2/media pool1-z2/.system 7.3T 753M 7.3T 0% /var/db/system pool1-z2/.system/cores 1.0G 14M 1.0G 1% /var/db/system/cores pool1-z2/.system/samba4 7.3T 500K 7.3T 0% /var/db/system/samba4 pool1-z2/.system/syslog-e6cb7c26dd1243d3962c3f87f9eddfe5 7.3T 1.8M 7.3T 0% /var/db/system/syslog-e6cb7c26dd1243d3962c3f87f9eddfe5 pool1-z2/.system/rrd-e6cb7c26dd1243d3962c3f87f9eddfe5 7.3T 24M 7.3T 0% /var/db/system/rrd-e6cb7c26dd1243d3962c3f87f9eddfe5 pool1-z2/.system/configs-e6cb7c26dd1243d3962c3f87f9eddfe5 7.3T 8.5M 7.3T 0% /var/db/system/configs-e6cb7c26dd1243d3962c3f87f9eddfe5 pool1-z2/.system/webui 7.3T 140K 7.3T 0% /var/db/system/webui pool1-z2/.system/services 7.3T 140K 7.3T 0% /var/db/system/services
