Hi, I have used robocopy for CIFS data migration from old ONTAP (9.1P2) to new (9.11.1P7). After initial copy and incremental, I see the volume on the new system is taking almost 3.5 TB of extra space. Also the number of files in source volume is more than that in destination volume. There are no errors in robocopy and the summary shown everything copied. I have done random checks on folders on both sides they look good. This is really strange!
----------------------------------------------------------- SOURCE USAGE ----------------------------------------------------------------
source::> vol show-space cifs_data
Vserver : source_cifs
Volume : cifs_data
Feature Used Used%
-------------------------------- ---------- ------
User Data 4.24TB 28%
Filesystem Metadata 5.68GB 0%
Inodes 2.05GB 0%
Snapshot Reserve 768GB 5%
Deduplication 34.97GB 0%
Snapshot Spill 350.4GB 2%
Performance Metadata 580.3MB 0%
Total Used 5.37TB 36%
Total Physical Used 5.19TB 35%
source::> vol show -vserver source_cifs -volume cifs_data -fields files
vserver volume files
-------- --------- --------
source_cifs cifs_data 31876696
------------------------------------------------- DESTINATION USAGE ----------------------------------------
dest::> vol show-space -volume cifs_data
Vserver : dest-cifs
Volume : cifs_data
Feature Used Used%
-------------------------------- ---------- ------
User Data 7.63TB 51%
Filesystem Metadata 3.01GB 0%
Inodes 1.50GB 0%
Snapshot Reserve 768GB 5%
Performance Metadata 42.77GB 0%
Total Used 8.42TB 56%
Total Physical Used 8.23TB 55%
dest::> vol show -vserver dest-cifs -volume cifs_data -fields files
vserver volume files
--------------- --------- --------
dest-cifs cifs_data 21251126
---------------------------------------------------- ROBOCOPY command used --------------------------------------------------
robocopy /e /mir /copyall /r:0 /w:0 /ETA /mt:32 /sec /secfix /dcopy:t \\source_cifs\cifs_data$\ \\dest_cifs\cifs_data$\
Is storage showing wrong usage ? or is there any bug or issue with this ?
Any help is appreciated. Thanks!
