Hi Martin,
The option is expected to work on VVR deployments too. Just that specific documentation is not done because the infrontof option is not VVR specific. You can the same on your lab. I did try out in my system, and working fine.
vradmin -g dg1 repstatus myrvg
Replicated Data Set: myrvg
Primary:
Host name: 192.168.20.93
RVG name: myrvg
DG name: dg1
RVG state: enabled for I/O
RVG encrypted: No
Data volumes: 1
VSets: 0
SRL name: srlvol
SRL size: 1.00 T
Total secondaries: 1
Secondary:
Host name: 192.168.20.94
RVG name: myrvg
DG name: dg1
Data status: consistent, up-to-date
Replication status: replicating (connected)
Current mode: N/A
Logging to: SRL
Timestamp Information: behind by 0h 0m 0s
Created few snapshots
vxsnap -g dg1 make source=vol1/new=vol1_snap1/cachesize=100g
vxsnap -g dg1 make source=vol1/new=vol1_snap2/cache=vol1_snap1-C01/infrontof=vol1_snap1
vxsnap -g dg1 make source=vol1/new=vol1_snap3/cache=vol1_snap1-C01/infrontof=vol1_snap2
vxsnap -g dg1 make source=vol1/new=vol1_snap4/cache=vol1_snap1-C01/infrontof=vol1_snap3
vxsnap -g dg1 list
NAME DG OBJTYPE SNAPTYPE PARENT PARENTDG SNAPDATE
vol1 dg1 vol - - - - -
vol1_snap1 dg1 vol spaceopt vol1 dg1 2023/05/30 07:18
vol1_snap2 dg1 vol spaceopt vol1 dg1 2023/05/30 07:18
vol1_snap3 dg1 vol spaceopt vol1 dg1 2023/05/30 07:18
vol1_snap4 dg1 vol spaceopt vol1 dg1 2023/05/30 07:19
vxsnap -g dg1 print
NAME SNAPOBJECT TYPE PARENT SNAPSHOT %DIRTY %VALID
vol1 -- volume -- -- -- 100.00
vol1_snap1_snp volume -- vol1_snap1 0.00 --
vol1_snap2_snp volume -- vol1_snap2 0.00 --
vol1_snap3_snp volume -- vol1_snap3 0.00 --
vol1_snap4_snp volume -- vol1_snap4 0.00 --
vol1_snap1 vol1_snp volume vol1 -- 0.00 0.00
vol1_snap2 vol1_snp1 volume vol1 -- 0.00 0.00
vol1_snap3 vol1_snp2 volume vol1 -- 0.00 0.00
vol1_snap4 vol1_snp3 volume vol1 -- 0.00 0.00
thanks for verifying that vxsnap option works with "infrontof" on VVR secondary volumes.
So are you suggesting that:
1) If I want to use cascaded snaps on VVR secondary I should use "vxsnap" command.
In all other type of snaps (space optimized, instant full, plex breakoff) I should use vxrvg?
2) Why doesn't vxrvg support "infrontof" attribute while it supports all other types of snap? [not just documentation, even the command vxrvg snapshot doesn't have an option for infrontof]
3) If there is no difference between vxsnap snapshot and vxrvg snapshot, why does vxrvg snapshot command exist. So I am thinking what would I be missing if I use vxsnap snapshot command instead of vxrvg snapshot
