I would like to know the printing condition of zfs send prints the progress always.

[mikanmi]

I would like to show the progress on a backup with zfs send and zfs recv.

I am developing Elephant Backup, which is backup CLI to archive ZFS filesystems.
Elephant Backup uses the zfs send and the zfs recv command from own itself Javascript language.

e.g., Elephant Backup's usage of the zfs commands.

• zfs send -Rw -I storage.pool@elephant-2022-08-06-123351 storage.pool@elephant-2022-09-28-123351
• zfs recv -F -d -x mountpoint backup.pool/storage.pool

I would like to show the progress on a backup without the pv command.
I found that sometimes, zfs send prints the progress on a backup on the standard error or not.
But I do not know the printing condition of zfs send.

I would like to know the printing condition of zfs send prints the progress always.

[rincebrain]

zfs send -v, maybe?

[mikanmi]

Thanks, zfs send -v prints the progress on the standard error.