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Why is there a difference in space usage in quota report and a UNIX client?
https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Why_is_there_a_difference_in_space_usage_in_quota_report_and_a_UNIX_client
The difference in usage values is because of the difference in methods followed by the quota report and the UNIX commands for calculating the data blocks in the volume or qtree. However, when the volu...The difference in usage values is because of the difference in methods followed by the quota report and the UNIX commands for calculating the data blocks in the volume or qtree. However, when the volume is mounted on a UNIX client and the file is shown as the output of the ls command, the empty data blocks are also included in the space usage.
used total size of df command is bigger than logical used of show-efficiency command
https://kb.netapp.com/on-prem/ontap/DM/Efficiency/Efficiency-KBs/used_total_size_of_df_command_is_bigger_than_logical_used_of_show-efficiency_command
Total volume used using df command is bigger than logical used value of storage aggregate show-efficiency Therefore, volume-level logical used value is bigger than aggregate-level logical used "used" ...Total volume used using df command is bigger than logical used value of storage aggregate show-efficiency Therefore, volume-level logical used value is bigger than aggregate-level logical used "used" of "df" is 170GB. "Logical Used" of "show-efficiency" is 73.69GB. Filesystem total used avail capacity Mounted on Vserver cluster1::*> storage aggregate show-efficiency -advanced -aggregate aggr1_01 Used Used Efficiency Ratio Used Used Reduction Efficiency Ratio
Used size reported by Linux client's DF command is larger than that reported by storage system
https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Used_size_reported_by_Linux_client's_DF_command_is_larger_than_that_reported_by_storage_system
Applies to ONTAP 9 Thin-provisioned volume Issue The used size reported by the Linux client's DF command is larger than that reported by the storage system's DF command
How to calculate the non-guaranteed volume for thin provisioning space on df
https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/How_to_calculate_the_non-guaranteed_volume_for_thin_provisioning_space_on_df
Applies to ONTAP 9 Data ONTAP 7-mode Thin provisioned volumes (guarantee = none) Description This article describes how thin provisioned (guarantee=none) volume space is used, and why the command outp...Applies to ONTAP 9 Data ONTAP 7-mode Thin provisioned volumes (guarantee = none) Description This article describes how thin provisioned (guarantee=none) volume space is used, and why the command output of df, df -A and aggr show_space differs. Note: These calculation results can vary due to active I/O transfers.
Filesystem metadata size is bigger than User data size
https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Filesystem_metadata_size_is_bigger_than_User_data_size
Applies to Filesystem metadata size is bigger than User data size cluster::> df -h vol_name Filesystem total used avail capacity mounted on Vserver /vol/vol_name 500GB 39GB 460GB 8% /vol_name SVM1 /vo...Applies to Filesystem metadata size is bigger than User data size cluster::> df -h vol_name Filesystem total used avail capacity mounted on Vserver /vol/vol_name 500GB 39GB 460GB 8% /vol_name SVM1 /vol/vol_name/.snapshot 0B 0B 0B 0% /vol_name/.snapshot SVM1 cluster::> vol show-space vol_name Vserver: SVM1 Volume: vol_name Feature Used Used% User Data 7.44GB 1% Filesystem Metadata 29.74GB 6% Inodes 1.68GB 0% Performance Metadata 481.1MB 0% Total Used 39.32GB 8% Total Physical Used 39.31GB 8%
DF shows more used capacity compared to quota report
https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/DF_shows_more_used_capacity_compared_to_quota_report
svm Vol1 2305843013508661248 1.15TB svm Vol1 2305843017803628544 188.0GB svm Vol1 2305843022098595840 5.80TB svm Vol1 2305843026393563136 1012GB svm Vol1 2305843030688530432 440.9GB svm Vol1 230584303...svm Vol1 2305843013508661248 1.15TB svm Vol1 2305843017803628544 188.0GB svm Vol1 2305843022098595840 5.80TB svm Vol1 2305843026393563136 1012GB svm Vol1 2305843030688530432 440.9GB svm Vol1 2305843034983497728 0B svm Vol1 2305843039278465024 171.5GB svm Vol1 2305843043573432320 349.5GB svm Vol1 2305843052163366912 122.2GB svm Vol1 2305843056458334208 299.1GB svm Vol1 2305843060753301504 0B svm Vol1 2305843065048268800 57.90GB svm Vol1 2305843073638203392 540.2GB svm Vol1 2305843077933170688 0B
df command does not work properly against SMB3 mount
https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/df_command_does_not_work_properly_against_SMB3_mount
Applies to ONTAP 9 CIFS / SMB (at least version 3.0) df command Linux client Nested path, not root of share, is mounted on the client Issue A Linux client running the df command against a CIFS mount e...Applies to ONTAP 9 CIFS / SMB (at least version 3.0) df command Linux client Nested path, not root of share, is mounted on the client Issue A Linux client running the df command against a CIFS mount either shows zero values for Size / Used / Avail, or the output for the CIFS mount is entirely absent, depending on the arguments supplied to the command Actual access to the CIFS mount path is not impacted, though attempting to access the root directory in the share fails
Discrepancy in used space between SnapMirror source and destination volume
https://kb.netapp.com/on-prem/ontap/DP/SnapMirror/SnapMirror-KBs/Discrepancy_in_used_space_between_SnapMirror_source_and_destination_volume
Applies to ONTAP 9.5P6 AFF Systems Issue The used space of SnapMirror destination volume is more than source volume Confirm this using df -Ah output (node level) on both volumes node run <node-name> d...Applies to ONTAP 9.5P6 AFF Systems Issue The used space of SnapMirror destination volume is more than source volume Confirm this using df -Ah output (node level) on both volumes node run <node-name> df -Ah
'df' command hangs for NFSv3 clients in ONTAP 9
https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/df_command_hangs_for_NFSv3_clients_in_ONTAP_9
Applies to ONTAP 9 NFSv3 Issue Some NFS operations such as 'df' and 'ls' hang indefinitely Packet traces show NFS3ERR_JUKEBOX in response to GETATTR and FSSTAT requests, among others
Newly-created/empty volume shows large used space on NFS client df output
https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/Newly_created_empty_volume_shows_large_used_space_on_NFS_client_df_output
A df command from an NFS client shows a large amount of used space: [root@nfs-client ~]$ df -h /mnt/vol1 Filesystem Size Used Avail Use% Mounted on nfssvm:/vol1 950G 530G 421G 56% /nfsdata A du comman...A df command from an NFS client shows a large amount of used space: [root@nfs-client ~]$ df -h /mnt/vol1 Filesystem Size Used Avail Use% Mounted on nfssvm:/vol1 950G 530G 421G 56% /nfsdata A du command run on the NFS client shows the expected space usage: ONTAP returns the expected data: Cluster01::> df -h vol1 Filesystem total used avail capacity Mounted on Vserver /vol/vol1/ 950GB 492KB 420GB 0% /vol1 nfssvm /vol/vol1/.snapshot 50GB 516KB 49GB 0% /vol1/.snapshot nfssvm
Does difference in percent-used calculation depend on ONTAP versions?
https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Does_difference_in_percent-used_calculation_depend_on_ONTAP_versions
"percent-used" = (df used + df snapshot reserve) / (volume size + snapshot reserve) ontap93::> vol show -vserver svm1_ontap93 -volume vol1_svm1 -fields percent-used, total ,used, percent-snapshot-spac..."percent-used" = (df used + df snapshot reserve) / (volume size + snapshot reserve) ontap93::> vol show -vserver svm1_ontap93 -volume vol1_svm1 -fields percent-used, total ,used, percent-snapshot-space ONTAP 9.3.1 or later calculation of "percent-used" = "df used percent" ontap97::> vol show -vserver svm1_ontap97 -volume vol1_svm1 -fields percent-used, total ,used, percent-snapshot-space vserver volume total used percent-used percent-snapshot-space