Home > Storage > PowerScale (Isilon) > Product Documentation > Data Efficiency > Dell PowerScale OneFS: Data Reduction and Storage Efficiency > Monitoring and reporting
There are four main CLI commands that report on the status and effect of small file efficiency:
When running the isi job report view command, enter the job ID as an argument. In the command output, the ‘file packed’ field will indicate how many files have been successfully containerized. For example, for job ID 1018:
# isi job reports view –v 1018
SmartPools[1018] phase 1 (2021-02-31T10:29:47
---------------------------------------------
Elapsed time 12 seconds
Working time 12 seconds
Group at phase end <1,6>: { 1:0-5, smb: 1, nfs: 1, hdfs: 1, swift: 1, all_enabled_protocols: 1}
Errors
‘dicom’:
{‘Policy Number’: 0,
‘Files matched’: {‘head’:512, ‘snapshot’: 256}
‘Directories matched’: {‘head’: 20, ‘snapshot’: 10},
‘ADS containers matched’: {‘head’:0, ‘snapshot’: 0},
‘ADS streams matched’: {‘head’:0, ‘snapshot’: 0},
‘Access changes skipped’: 0,
‘Protection changes skipped’: 0,
‘Packing changes skipped’: 0,
‘File creation templates matched’: 0,
‘Skipped packing non-regular files’: 2,
‘Files packed’: 48672,
‘Files repacked’: 0,
‘Files unpacked’: 0,
},
}
The second command, ‘isi_packing –fsa’, provides a storage efficiency percentage in the last line of its output. This command requires a successful run of the file system analysis (FSA) job. If FSA has not been run previously, it can be kicked off with the following isi job jobs start FSAnalyze command. For example:
# isi job jobs start FSAnalyze
Started job [1018]
When this job has completed, run:
# isi_packing -–fsa -–fsa-jobid 1018
FSAnalyze job: 1018 (Mon Mar 1 22:01:21 2021)
Logical size: 47.371T
Physical size: 58.127T
Efficiency: 81.50%
In this case, the storage efficiency achieved after containerizing the data is 81.50%, as reported by isi_packing.
If you do not specify an FSAnalyze job ID, the –fsa defaults to the last successful FSAnalyze job run results.
Note: The isi_packing --fsa command reports on the whole /ifs filesystem. This means that the overall utilization percentage can be misleading if other, non-containerized data is also present on the cluster.
The ‘isi_cstats’ CLI command also reports on packed files and includes both the total capacity of containerized data and a container efficiency ratio:
# isi_cstats
Total files : 397234451
Total inlined files : 379948336
Total directories : 32380092
Total logical data : 18471 GB
Total shadowed data : 624 GB
Total physical data : 26890 GB
Total reduced data : 14645 GB
Total protection data : 2181 GB
Total inode data : 9748 GB
Current logical data : 18471 GB
Current shadowed data : 624 GB
Current physical data : 26878 GB
Snapshot logical data : 0 B
Snapshot shadowed data : 0 B
Snapshot physical data : 32768 B
Total inlined data savings : 2899 GB
Total inlined data ratio : 1.1979 : 1
Total compression savings : 303 GB
Total compression ratio : 1.0173 : 1
Total deduplication savings : 624 GB
Total deduplication ratio : 1.0350 : 1
Total containerized data : 0 B
Total container efficiency : 1.0000 : 1
Total data reduction ratio : 1.0529 : 1
Total storage efficiency : 0.6869 : 1
Raw counts
{ type=bsin files=3889 lsize=314023936 pblk=1596633 refs=81840315 data=18449 prot=25474 ibyte=23381504 fsize=8351563907072 iblocks=0 }
{ type=csin files=0 lsize=0 pblk=0 refs=0 data=0 prot=0 ibyte=0 fsize=0 iblocks=0 }
{ type=hdir files=32380091 lsize=0 pblk=35537884 refs=0 data=0 prot=0 ibyte=1020737587200 fsize=0 iblocks=0 }
{ type=hfile files=397230562 lsize=19832702476288 pblk=2209730024 refs=81801976 data=1919481750 prot=285828971 ibyte=9446188553728 fsize=17202141701528 iblocks=379948336 }
{ type=sdir files=1 lsize=0 pblk=0 refs=0 data=0 prot=0 ibyte=32768 fsize=0 iblocks=0 }
{ type=sfile files=0 lsize=0 pblk=0 refs=0 data=0 prot=0 ibyte=0 fsize=0 iblocks=0 }
Note: Capacity savings from SFSE are included in the overall storage efficiency ratio, where SFSE primarily saves space by reducing protection overhead (FEC blocks). By combining multiple small files into compression chunks in the containers, SFSE helps to improve the compression ratio which in turn improves the data reduction ratio. However, OneFS does not currently separate out the SFSE improvements from the global storage efficiency statistics.
There is also a Storage Efficiency assessment tool available in OneFS 8.2 and later. This can be run as from the CLI with the following syntax:
# isi_sfse_assess <options>
Estimated storage efficiency is presented in the tool’s output in terms of raw space savings as a total and percentage and a percentage reduction in protection group overhead.
SFSE estimation summary:
* Raw space saving: 1.7 GB (25.86%)
* PG reduction: 25978 (78.73%)