ideal output format for integration with snapshot-timemachine

[kryptt]

Hi, I am currently working on a pull request (mrBliss/snapshot-timemachine#4) to integrate this tool directly within emacs.

I'm currently using the verbose debug output (-v) to capture the dataset mount path.

An optimal listing would be in to form:

idx | snapshot name | snapshot file | file date

so if currently running zsd -d 15 .spacemacs list outputs

#	Snapshot	Snapshot age
0	autosnap_2020-06-11_23:59:00_daily	5 days
1	autosnap_2020-06-04_23:59:05_daily	12 days

I would benefit from running zfs -d 15 --timemachine .spacemacs list to output

#	Snapshot	Snapshot file	File Date
0	autosnap_2020-06-11_23:59:00_daily	/home/rhansen/.zfs/snapshot/autosnap_2020-06-11_23:59:00_daily/.spacemacs	Jun 5 23:14
1	autosnap_2020-06-04_23:59:05_daily	/home/rhansen/.zfs/snapshot/autosnap_2020-06-04_23:59:05_daily/.spacemacs	Jun 12 15:15

An additional option to omit the headers would be a nice extra.

What do you think?

[j-keck]

Hey,

if it's ok for you, i would use the -snapshot-timemachine flag for this.

Did you need a header, or always remove it?

would this output format ok for you?

..priv/zfs-snap-diff⟩ ./zsd -snapshot-timemachine  cmd/zsd/main.go  list
0	zfs-auto-snap_hourly-2020-06-17-13h00U	/home/.zfs/snapshot/zfs-auto-snap_hourly-2020-06-17-13h00U/j/prj/priv/zfs-snap-diff/cmd/zsd/main.go	Jun 17 15:00
1	zfs-auto-snap_frequent-2020-06-17-12h45U	/home/.zfs/snapshot/zfs-auto-snap_frequent-2020-06-17-12h45U/j/prj/priv/zfs-snap-diff/cmd/zsd/main.go	Jun 17 14:45

With the -snapshot-timemachine flag, the output would be:

• without header
• fields separated with a single tab
• filepath in the snapshot included
• absolute date (MMM D HH:MI)

i have implemented a prototype in 39822c4

[kryptt]

yup, that works perfectly fine!

[j-keck]

The build currently fails, so the artifacts are not build: https://github.com/j-keck/zfs-snap-diff/runs/780753110

I'm on it.

[j-keck]

build fixed and the new version with the changes are released:
https://github.com/j-keck/zfs-snap-diff/releases/tag/v1.1.1

[priyadarshan]

This is fantastic, thank you!