Bug 252031 - sysutils/pydf: Reports different values than df and di
Summary: sysutils/pydf: Reports different values than df and di
Status: Open
Alias: None
Product: Ports & Packages
Classification: Unclassified
Component: Individual Port(s) (show other bugs)
Version: Latest
Hardware: Any Any
: --- Affects Only Me
Assignee: freebsd-ports-bugs (Nobody)
Keywords: needs-qa
Depends on:
Reported: 2020-12-21 21:06 UTC by eu9gu4
Modified: 2020-12-22 01:34 UTC (History)
1 user (show)

See Also:
linimon: maintainer-feedback? (baptiste)


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Description eu9gu4 2020-12-21 21:06:44 UTC
pydf reported values are 8 times larger than those produced by df and di.

df- hT

Filesystem     Type   Size  Used  Avail Capacity  Mounted on
/dev/nda1p2    ufs     98G   14G    76G    16%    /
/dev/ada0p4    ufs    3.9G  311M   3.3G     9%    /var

di -g
Filesystem     Mount Gibis  Used  Avail %Used  fs Type
/dev/nda1p2    /      97.8  14.3   75.7   23%  ufs
/dev/ada0p4    /var    3.9   0.3    3.3   16%  ufs


Filesystem     Size  Used Avail Use%       						   Mounted on          
/dev/nda1p2    783G  114G 606G  14.6 [####..............] /
/dev/ada0p4    31G  2486M 26G   7.9  [##................] /var

Is python processing those numbers in a non-standard way?
Comment 1 eu9gu4 2020-12-21 23:07:49 UTC
Played a bit with command options:

With --block-size=8589934592 (which is 8*1024^3) pydf shows correct values in GiB, but only for UFS. The reported values for ZFS must be divided by 32 to get the correct numbers.

In Linux pydf reports the correct values without any --block-size option for all types of filesystems: ufs, zfs, ext4, btrfs, ntfs etc.
Comment 2 Kubilay Kocak freebsd_committer freebsd_triage 2020-12-22 01:13:37 UTC
^Triage: Thank you for the report. This appears to be an issue that might be better reported upstream, along with the relevent FreeBSD / filesystem, version information
Comment 3 eu9gu4 2020-12-22 01:34:55 UTC
Hmm, the upstream development seems to have been stalled since 2015.
The README.txt says:

"pydf was written for linux, using specific linux features.
The fact it runs on other systems is pure coincidence..."

So, little chance for fixes to make it work in BSD!
Probably better give up using it.