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please explain to me the snap list on the source filer in snapmirror

netappmagic
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The vol1 is 100% full again. My question is not about sovling volume full issue. but, more about the snapmirror in a more granular way. Please see the following outputs on the source filer "filer2". It seems to me that the size of the snap caused by the snapmirror is 1911GB, the rest of the space is taken by the volume (FS) itself. Could anybody please explain to me in detail about the output of "snap list vol1"?

-  what does exactly the snap include, complete copy of volume1, and plus all snapshots since the first full copy? Why do I have to continue to leave the full copy on the source filer, after it has already copied over to DR site?

- has this listed snap alredy been copied to drfiler1? or just the full sets of snapshots?

- is there any way to list the data in detail as to what is the full copy of volume and what are those snapshots, when were those snapshots taken individually?

thanks for your help!

filer2> df -rg vol1
Filesystem               total       used      avail   reserved  Mounted on
/vol/vol1/       8193GB     8148GB        0GB        0GB  /vol/vol1/
/vol/avol1/.snapshot        0GB     1911GB        0GB        0GB  /vol/vol1/.snapshot
filer2> snap list vol1
Volume vol1
working...

  %/used       %/total  date          name
----------  ----------  ------------  --------
23% (23%)   23% (23%)  Oct 09 06:00  drfiler(0151735037)_vol1.806 (snapmirror)

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