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Subject: bug#37702: Suggestion for 'df' utility
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Hi there
I got this email address from the 'df' man page. Hope it's still active
and the right place for feedback.
With recent changes to Ubuntu and the increasing use of 'snap' packaging
for all sorts of things, the 'df' utility output is now quite jumbled
and messy. My fairly normal system now has 17 /dev/loopNN mounts for
various different software packages. I would rather not see these things
by default. Or at least, I would like to have a convenient
single-character flag that allows me to suppress those mounts from my
'df' output.
One useful approach would be a flag that suppresses read-only
filesystems. Another approach would be to suppress read-only filesystems
that have no free space. Perhaps there are other good approaches too.
I don't know if this issue is also relevant for 'docker' or not.
Cheers
JP
https://askubuntu.com/questions/834093/small-snap-loop-devices-visible-in=
-gnome-disk-utility-or-what-is-the-function-of
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: John Pye <john.pye@HIDDEN> Subject: bug#37702: Acknowledgement (Suggestion for 'df' utility) Message-ID: <handler.37702.B.157080429915844.ack <at> debbugs.gnu.org> References: <03251c9f-a643-ed3b-83bd-e52590291c22@HIDDEN> X-Gnu-PR-Message: ack 37702 X-Gnu-PR-Package: coreutils Reply-To: 37702 <at> debbugs.gnu.org Date: Fri, 11 Oct 2019 14:32:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-coreutils@HIDDEN If you wish to submit further information on this problem, please send it to 37702 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 37702: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D37702 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
X-Loop: help-debbugs@HIDDEN
Subject: bug#37702: Suggestion for 'df' utility
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On 11/10/2019 08:55, John Pye wrote:
> Hi there
>
> I got this email address from the 'df' man page. Hope it's still active
> and the right place for feedback.
>
> With recent changes to Ubuntu and the increasing use of 'snap' packaging
> for all sorts of things, the 'df' utility output is now quite jumbled
> and messy. My fairly normal system now has 17 /dev/loopNN mounts for
> various different software packages. I would rather not see these things
> by default. Or at least, I would like to have a convenient
> single-character flag that allows me to suppress those mounts from my
> 'df' output.
>
> One useful approach would be a flag that suppresses read-only
> filesystems. Another approach would be to suppress read-only filesystems
> that have no free space. Perhaps there are other good approaches too.
>
> I don't know if this issue is also relevant for 'docker' or not.
Well if you want to exclude nested file systems like that,
you could try:
alias df='df -x squashfs'
cheers,
Pádraig
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Subject: bug#37702: Suggestion for 'df' utility
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On 10/11/19 11:20 AM, P=C3=A1draig Brady wrote:
>=20
> if you want to exclude nested file systems like that,
> you could try:
>=20
> =C2=A0 alias df=3D'df -x squashfs'
On my Fedora 30 workstation that option doesn't make any difference.=20
Regardless of whether '-x squashfs' is used, I see this output from 'df':
Filesystem 1K-blocks Used Available Use% Mounted on
devtmpfs 4065704 0 4065704 0% /dev
tmpfs 4081560 36616 4044944 1% /dev/shm
tmpfs 4081560 1696 4079864 1% /run
tmpfs 4081560 0 4081560 0% /sys/fs/cgroup
/dev/sda5 59614116 16910684 39645412 30% /
tmpfs 4081560 124 4081436 1% /tmp
/dev/sda2 1849433716 207781976 1547682948 12% /home
/dev/sda1 5095040 244468 4572044 6% /boot
tmpfs 816312 60 816252 1% /run/user/1000
and most of these lines are useless.
For many years we've put up with the problem of too many filesystems in=20
the default plain 'df' output, and now's as good a time as any to fix=20
that. On my workstation there should be only four lines of information,=20
one each for /, /home, /boot, and the shared tmpfs area.
Presumably readonly filesystems should also be omitted by default, since=20
they're not something people ordinarily care about.
We can add a flag or two for the rare people who want to see these=20
normally-useless lines.
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On 11/10/2019 20:56, Paul Eggert wrote:
> On 10/11/19 11:20 AM, Pádraig Brady wrote:
>>
>> if you want to exclude nested file systems like that,
>> you could try:
>>
>> alias df='df -x squashfs'
>
> On my Fedora 30 workstation that option doesn't make any difference.
> Regardless of whether '-x squashfs' is used, I see this output from 'df':
>
> Filesystem 1K-blocks Used Available Use% Mounted on
> devtmpfs 4065704 0 4065704 0% /dev
> tmpfs 4081560 36616 4044944 1% /dev/shm
> tmpfs 4081560 1696 4079864 1% /run
> tmpfs 4081560 0 4081560 0% /sys/fs/cgroup
> /dev/sda5 59614116 16910684 39645412 30% /
> tmpfs 4081560 124 4081436 1% /tmp
> /dev/sda2 1849433716 207781976 1547682948 12% /home
> /dev/sda1 5095040 244468 4572044 6% /boot
> tmpfs 816312 60 816252 1% /run/user/1000
>
> and most of these lines are useless.
>
> For many years we've put up with the problem of too many filesystems in
> the default plain 'df' output, and now's as good a time as any to fix
> that. On my workstation there should be only four lines of information,
> one each for /, /home, /boot, and the shared tmpfs area.
>
> Presumably readonly filesystems should also be omitted by default, since
> they're not something people ordinarily care about.
>
> We can add a flag or two for the rare people who want to see these
> normally-useless lines.
What df tries to show now is a deduplicated list of file systems
that have consumable storage. Maybe read-only could be valid to drop
by default, but I've worked on systems where certain file-systems
were read-only most of the time, but they were consumable.
I wonder could we key (also) on used==0||available==0.
cheers,
Pádraig
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On 10/13/19 2:41 AM, P=C3=A1draig Brady wrote:
> I wonder could we key (also) on used=3D=3D0||available=3D=3D0.
Yes, looking at the sample output I gave earlier, I'd say we could by def=
ault=20
drop filesystems where usage is 1% or less. That would solve the problem =
for my=20
workstation. This is roughly akin to the "used=3D=3D0" test you're sugges=
ting.
(I don't know if this would address the problem of small snap loop device=
s. I=20
haven't seen sample df output from that.)
What you mean by "available=3D=3D0"? Actual zero-size filesystems, or fil=
esystems=20
whose size is less than some epsilon? What would the epsilon be? Can you =
give an=20
example?
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Hi all,
On 2019-10-13 2:27 p.m., Paul Eggert wrote:
> On 10/13/19 2:41 AM, Pádraig Brady wrote:
>> I wonder could we key (also) on used==0||available==0.
>
> Yes, looking at the sample output I gave earlier, I'd say we could by
> default drop filesystems where usage is 1% or less. That would solve the
> problem for my workstation. This is roughly akin to the "used==0" test
> you're suggesting.
>
I would humbly suggest caution with such unexpected user-facing changes
to the default output of 'df' - learning the lessons from changing the
quotes in 'ls'.
Countless users have been using 'df' in their own ways, and have gotten
used to certain outputs.
This thread originated by a request to "clean up" the output on newer
ubuntu machines which use "snap" packages as /dev/loopN .
Let's not turn that into a drastic change that will affect many other
existing systems - the users on other systems did not ask for any changes.
---
Specifically for "default drop filesystems where usage is 1% or less" -
I can think of few cases off the top of my head where this would be
extremely confusing:
- I recently installed a 33TB raid file system. The usage on that system
is at %1 and will stay like so for at least several days.
- Amazon cloud services (AWS) offers an NFS4 service (they call it
"EFS") that has reported size of 8 exabytes. There too usage could be at
%1 for a long long time.
---
For cases where I want to list only the "real" storage, I typically use
an alias such as:
alias dff='df -h -x tmpfs -x devtmpfs'
And it would be very easy and least disruptive to recommend
to ubuntu users to add "-x squashfs" or another file system to ignore.
Perhaps we can come up with a recommended list of "lesser" file systems
to ignore (or conditions such as read-only file
systems) and add it as a new option, but please let's not make it the
default.
My two cents,
- assaf
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From: Paul Eggert <eggert@HIDDEN>
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On 10/13/19 2:11 PM, Assaf Gordon wrote:
>
> This thread originated by a request to "clean up" the output on newer
> ubuntu machines which use "snap" packages as /dev/loopN .
>
> Let's not turn that into a drastic change
It could certainly be multiple sets of patches. But let's face it, df's utility
for ordinary interactive use has degraded significantly with time due to all the
random filesystems people have been adding, and we shouldn't keep our heads in
the sands about this. df's default needs to change, one way or another.
I mean c'mon, here's the output of 'df' on the Ubuntu 18.04.3 LTS workstation
I'm typing this particular message on. In any sane system there would be only
four lines of non-header output (for tmpfs etc, /, /home, and
/media/eggert/B827-D456), but df is outputting 28 lines. This is ridiculous.
Filesystem 1K-blocks Used Available Use% Mounted on
udev 7644704 0 7644704 0% /dev
tmpfs 1533620 1924 1531696 1% /run
/dev/sda1 99431552 11740340 82597324 13% /
tmpfs 7668096 33212 7634884 1% /dev/shm
tmpfs 5120 8 5112 1% /run/lock
tmpfs 7668096 0 7668096 0% /sys/fs/cgroup
/dev/loop0 144128 144128 0 100% /snap/gnome-3-26-1604/90
/dev/loop1 45312 45312 0 100% /snap/gtk-common-themes/1353
/dev/loop2 153600 153600 0 100% /snap/gnome-3-28-1804/71
/dev/loop4 15104 15104 0 100% /snap/gnome-characters/317
/dev/loop6 153600 153600 0 100% /snap/gnome-3-28-1804/67
/dev/loop5 1024 1024 0 100% /snap/gnome-logs/73
/dev/loop3 3840 3840 0 100% /snap/gnome-system-monitor/100
/dev/loop10 91264 91264 0 100% /snap/core/7713
/dev/loop7 3840 3840 0 100% /snap/gnome-system-monitor/95
/dev/loop8 4224 4224 0 100% /snap/gnome-calculator/406
/dev/loop9 55808 55808 0 100% /snap/core18/1192
/dev/loop11 43904 43904 0 100% /snap/gtk-common-themes/1313
/dev/loop12 15104 15104 0 100% /snap/gnome-characters/296
/dev/loop13 144128 144128 0 100% /snap/gnome-3-26-1604/92
/dev/loop14 91264 91264 0 100% /snap/core/7917
/dev/loop15 1024 1024 0 100% /snap/gnome-logs/81
/dev/loop17 55808 55808 0 100% /snap/core18/1144
/dev/loop16 4352 4352 0 100% /snap/gnome-calculator/501
/dev/md127p1 2884021472 1326255744 1411242748 49% /home
tmpfs 1533616 16 1533600 1% /run/user/121
tmpfs 1533616 60 1533556 1% /run/user/1000
/dev/sdd1 7812864 4705136 3107728 61% /media/eggert/B827-D456
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Subject: bug#37702: Suggestion for 'df' utility
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On 2019-10-13 23:28, Paul Eggert wrote:
> In any sane system there would be only
> four lines of non-header output (for tmpfs etc, /, /home, and
> /media/eggert/B827-D456), but df is outputting 28 lines.
What is so special about tmpfs so that you would like to see it?
Here on my openSUSE:Tumbleweed system, I see the following:
$ df -T
Filesystem Type 1K-blocks Used Available Use% Mounted on
devtmpfs devtmpfs 10187924 8 10187916 1% /dev
tmpfs tmpfs 10199048 45788 10153260 1% /dev/shm
tmpfs tmpfs 10199048 18036 10181012 1% /run
tmpfs tmpfs 10199048 0 10199048 0% /sys/fs/cgroup
/dev/sda2 ext4 20511312 12141864 7304488 63% /
/dev/loop0 ext2 31729 31729 0 100% /FULL_PARTITION_TMPDIR
/dev/sda5 ext4 619142920 390088908 229037628 64% /media/big_data
/dev/sda3 ext3 103085876 90714416 7128248 93% /home
tmpfs tmpfs 2039808 20 2039788 1% /run/user/1000
(The /FULL_PARTITION_TMPDIR is used by a special coreutils test.)
I think I could well live with adding 'devtmpfs' and 'tmpfs' to the
pseudo file systems in gnulib's "mountlist.c".
This seems to be a small change, and not satisfying the snap case.
Yet, I agree with Assaf that changing the defaults has to be done
with caution. Eliding r/o filesystems or where usage<1% doesn't
look like such.
Have a nice day,
Berny
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Subject: bug#37702: Suggestion for 'df' utility
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On 2019-10-13 3:28 p.m., Paul Eggert wrote:
[..]
> I mean c'mon, here's the output of 'df' on the Ubuntu 18.04.3 LTS
> workstation I'm typing this particular message on. In any sane system
> there would be only four lines of non-header output (for tmpfs etc, /,
> /home, and /media/eggert/B827-D456), but df is outputting 28 lines. This
> is ridiculous.
>
It is certainly inconvenient if that's not what you are looking for
(and certainly most desktop users aren't).
But I'm not sure if it's easy to find a set of criteria
that would work well while having minimal unexpected side effects of
hiding entries people in other systems do expect to see.
Out of curiosity,
can you share the output of the following commands on the same system?
lsblk
df -x tmpfs -x devtmpfs -x squashfs
Thanks,
- assaf
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From: Assaf Gordon <assafgordon@HIDDEN>
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Hello Bernhard,
On 2019-10-13 3:57 p.m., Bernhard Voelker wrote:
> On 2019-10-13 23:28, Paul Eggert wrote:
>> In any sane system there would be only
>> four lines of non-header output (for tmpfs etc, /, /home, and
>> /media/eggert/B827-D456), but df is outputting 28 lines.
>
> What is so special about tmpfs so that you would like to see it?
As an interesting use-case (though not common),
I recently configured a raspberry PI device,
and wanted to mount as many locations on tmpfs as possible,
e.g. "/tmp" "/var/tmp", "/var/log" etc.
In was very useful in those cases to be able to see separate
tmpfs file system listed, with information about how big they
are and how much space was used.
Also in other systems where "/tmp" is a "tmpfs",
users might want to see how much space is available.
If we hide it by default, they can of course use "df /tmp"
or "df --all" - it's not about removing this option,
it is just about making users' life harder or easier,
and making unexpected changes.
I recently also encountered a change in a default behavior of
a program which I've been using a very long time - and it is *very*
frustrating to have something that worked "just fine" for so long
being changed.
> Here on my openSUSE:Tumbleweed system, I see the following:
>
> $ df -T
> Filesystem Type 1K-blocks Used Available Use% Mounted on
[...]
> /dev/loop0 ext2 31729 31729 0 100% /FULL_PARTITION_TMPDIR
[...]
>
> (The /FULL_PARTITION_TMPDIR is used by a special coreutils test.)
That's an interesting case, where I would think you'd want to see it,
because you explicitly mounted it.
>
> I think I could well live with adding 'devtmpfs' and 'tmpfs' to the
> pseudo file systems in gnulib's "mountlist.c".
I agree, but think this needs to be communicated very well,
and in advance - perhaps announce this change ahead of time to
the respective package maintainers of each distribution - just so
they'll know it's coming (and also have a way to revert it if they don't
like it).
> This seems to be a small change, and not satisfying the snap case.
Possibly hiding "squashfs" of readonly-mounts could get rid of those snaps?
regards,
-assaf
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On 2019-10-14 00:13, Assaf Gordon wrote:
> Also in other systems where "/tmp" is a "tmpfs",
> users might want to see how much space is available.
>
> If we hide it by default, they can of course use "df /tmp"
> or "df --all" - it's not about removing this option,
> it is just about making users' life harder or easier,
> and making unexpected changes.
I see the point ... and agree.
>> This seems to be a small change, and not satisfying the snap case.
>
> Possibly hiding "squashfs" of readonly-mounts could get rid of those snaps?
Possibly.
But still the same question: how many users would like to see them
per default, and how many do not?
I would not like to argue for something like a ~/.dfrc, but it seems there
are a lot of different flavors of wishes out there.
Yet leaving the default seems to be a wise choice to me.
FWIW: df has the -x option, but if someone would use it in an alias like
"df -x sqashfs", then there's currently no chance to override it again:
$ alias df='/usr/bin/df -x tmpfs'
$ df -t tmpfs
df: file system type 'tmpfs' both selected and excluded
Have a nice day,
Berny
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Subject: bug#37702: Suggestion for 'df' utility
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From: Paul Eggert <eggert@HIDDEN>
Organization: UCLA Computer Science Department
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On 10/13/19 3:00 PM, Assaf Gordon wrote:
> I'm not sure if it's easy to find a set of criteria
> that would work well while having minimal unexpected side effects of hi=
ding=20
> entries people in other systems do expect to see.
No matter what we do (even if we do nothing), there will be problems. But=
doing=20
nothing is clearly a bad idea, as the output of plain df is quite bad rig=
ht now=20
in typical use. We can do better than that, even if we cannot be perfect =
and we=20
cause problems by changing defaults.
> Out of curiosity,
> can you share the output of the following commands on the same system?
Sure, here it is:
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 140.7M 1 loop /snap/gnome-3-26-1604/90
loop1 7:1 0 44.2M 1 loop /snap/gtk-common-themes/1353
loop2 7:2 0 149.9M 1 loop /snap/gnome-3-28-1804/71
loop3 7:3 0 3.7M 1 loop /snap/gnome-system-monitor/100
loop4 7:4 0 14.8M 1 loop /snap/gnome-characters/317
loop5 7:5 0 956K 1 loop /snap/gnome-logs/73
loop6 7:6 0 149.9M 1 loop /snap/gnome-3-28-1804/67
loop7 7:7 0 3.7M 1 loop /snap/gnome-system-monitor/95
loop8 7:8 0 4M 1 loop /snap/gnome-calculator/406
loop9 7:9 0 54.5M 1 loop /snap/core18/1192
loop10 7:10 0 89M 1 loop /snap/core/7713
loop11 7:11 0 42.8M 1 loop /snap/gtk-common-themes/1313
loop12 7:12 0 14.8M 1 loop /snap/gnome-characters/296
loop13 7:13 0 140.7M 1 loop /snap/gnome-3-26-1604/92
loop14 7:14 0 89.1M 1 loop /snap/core/7917
loop15 7:15 0 956K 1 loop /snap/gnome-logs/81
loop16 7:16 0 4.2M 1 loop /snap/gnome-calculator/501
loop17 7:17 0 54.4M 1 loop /snap/core18/1144
sda 8:0 0 111.8G 0 disk
=E2=94=9C=E2=94=80sda1 8:1 0 96.9G 0 part /
=E2=94=9C=E2=94=80sda2 8:2 0 1K 0 part
=E2=94=94=E2=94=80sda5 8:5 0 15G 0 part [SWAP]
sdb 8:16 0 2.7T 0 disk
=E2=94=94=E2=94=80sdb1 8:17 0 2.7T 0 part
=E2=94=94=E2=94=80md127 9:127 0 2.7T 0 raid1
=E2=94=94=E2=94=80md127p1 259:0 0 2.7T 0 md /home
sdc 8:32 0 2.7T 0 disk
=E2=94=94=E2=94=80sdc1 8:33 0 2.7T 0 part
=E2=94=94=E2=94=80md127 9:127 0 2.7T 0 raid1
=E2=94=94=E2=94=80md127p1 259:0 0 2.7T 0 md /home
sdd 8:48 1 7.5G 0 disk
=E2=94=94=E2=94=80sdd1 8:49 1 7.5G 0 part /media/eggert/B8=
27-D456
sr0 11:0 1 1024M 0 rom
$ df -x tmpfs -x devtmpfs -x squashfs
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 99431552 11740452 82597212 13% /
/dev/md127p1 2884021472 1326329584 1411168908 49% /home
/dev/sdd1 7812864 4705136 3107728 61% /media/eggert/B827-D=
456
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Subject: bug#37702: Suggestion for 'df' utility
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On Monday, October 14, 2019 8:06:47 AM CEST Paul Eggert wrote:
> On 10/13/19 3:00 PM, Assaf Gordon wrote:
> > I'm not sure if it's easy to find a set of criteria
> > that would work well while having minimal unexpected side effects of
> > hiding
> > entries people in other systems do expect to see.
>=20
> No matter what we do (even if we do nothing), there will be problems.
This is not an excuse to introduce new problems.
> But doing
> nothing is clearly a bad idea, as the output of plain df is quite bad
> right now in typical use. We can do better than that, even if we cannot be
> perfect and we cause problems by changing defaults.
I would prefer _not_ to change the default behavior (including the behavior
of commonly used options). There are downstream consumers who care about=20
compatibility in the first place.
Kamil
> > Out of curiosity,
> > can you share the output of the following commands on the same system?
>=20
> Sure, here it is:
>=20
> $ lsblk
> NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
> loop0 7:0 0 140.7M 1 loop /snap/gnome-3-26-1604/90
> loop1 7:1 0 44.2M 1 loop /snap/gtk-common-themes/1353
> loop2 7:2 0 149.9M 1 loop /snap/gnome-3-28-1804/71
> loop3 7:3 0 3.7M 1 loop /snap/gnome-system-monitor/100
> loop4 7:4 0 14.8M 1 loop /snap/gnome-characters/317
> loop5 7:5 0 956K 1 loop /snap/gnome-logs/73
> loop6 7:6 0 149.9M 1 loop /snap/gnome-3-28-1804/67
> loop7 7:7 0 3.7M 1 loop /snap/gnome-system-monitor/95
> loop8 7:8 0 4M 1 loop /snap/gnome-calculator/406
> loop9 7:9 0 54.5M 1 loop /snap/core18/1192
> loop10 7:10 0 89M 1 loop /snap/core/7713
> loop11 7:11 0 42.8M 1 loop /snap/gtk-common-themes/1313
> loop12 7:12 0 14.8M 1 loop /snap/gnome-characters/296
> loop13 7:13 0 140.7M 1 loop /snap/gnome-3-26-1604/92
> loop14 7:14 0 89.1M 1 loop /snap/core/7917
> loop15 7:15 0 956K 1 loop /snap/gnome-logs/81
> loop16 7:16 0 4.2M 1 loop /snap/gnome-calculator/501
> loop17 7:17 0 54.4M 1 loop /snap/core18/1144
> sda 8:0 0 111.8G 0 disk
> =E2=94=9C=E2=94=80sda1 8:1 0 96.9G 0 part /
> =E2=94=9C=E2=94=80sda2 8:2 0 1K 0 part
> =E2=94=94=E2=94=80sda5 8:5 0 15G 0 part [SWAP]
> sdb 8:16 0 2.7T 0 disk
> =E2=94=94=E2=94=80sdb1 8:17 0 2.7T 0 part
> =E2=94=94=E2=94=80md127 9:127 0 2.7T 0 raid1
> =E2=94=94=E2=94=80md127p1 259:0 0 2.7T 0 md /home
> sdc 8:32 0 2.7T 0 disk
> =E2=94=94=E2=94=80sdc1 8:33 0 2.7T 0 part
> =E2=94=94=E2=94=80md127 9:127 0 2.7T 0 raid1
> =E2=94=94=E2=94=80md127p1 259:0 0 2.7T 0 md /home
> sdd 8:48 1 7.5G 0 disk
> =E2=94=94=E2=94=80sdd1 8:49 1 7.5G 0 part /media/eggert/B8=
27-D456
> sr0 11:0 1 1024M 0 rom
> $ df -x tmpfs -x devtmpfs -x squashfs
> Filesystem 1K-blocks Used Available Use% Mounted on
> /dev/sda1 99431552 11740452 82597212 13% /
> /dev/md127p1 2884021472 1326329584 1411168908 49% /home
> /dev/sdd1 7812864 4705136 3107728 61% /media/eggert/B827-D=
456
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Subject: bug#37702: Suggestion for 'df' utility
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On Monday, October 14, 2019 8:06:47 AM CEST Paul Eggert wrote:
> On 10/13/19 3:00 PM, Assaf Gordon wrote:
> > I'm not sure if it's easy to find a set of criteria
> > that would work well while having minimal unexpected side effects of
> > hiding
> > entries people in other systems do expect to see.
>=20
> No matter what we do (even if we do nothing), there will be problems.
This is not an excuse to introduce new problems.
> But doing
> nothing is clearly a bad idea, as the output of plain df is quite bad
> right now in typical use. We can do better than that, even if we cannot be
> perfect and we cause problems by changing defaults.
I would prefer _not_ to change the default behavior (including the behavior
of commonly used options). There are downstream consumers who care about=20
compatibility in the first place.
Kamil
> > Out of curiosity,
> > can you share the output of the following commands on the same system?
>=20
> Sure, here it is:
>=20
> $ lsblk
> NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
> loop0 7:0 0 140.7M 1 loop /snap/gnome-3-26-1604/90
> loop1 7:1 0 44.2M 1 loop /snap/gtk-common-themes/1353
> loop2 7:2 0 149.9M 1 loop /snap/gnome-3-28-1804/71
> loop3 7:3 0 3.7M 1 loop /snap/gnome-system-monitor/100
> loop4 7:4 0 14.8M 1 loop /snap/gnome-characters/317
> loop5 7:5 0 956K 1 loop /snap/gnome-logs/73
> loop6 7:6 0 149.9M 1 loop /snap/gnome-3-28-1804/67
> loop7 7:7 0 3.7M 1 loop /snap/gnome-system-monitor/95
> loop8 7:8 0 4M 1 loop /snap/gnome-calculator/406
> loop9 7:9 0 54.5M 1 loop /snap/core18/1192
> loop10 7:10 0 89M 1 loop /snap/core/7713
> loop11 7:11 0 42.8M 1 loop /snap/gtk-common-themes/1313
> loop12 7:12 0 14.8M 1 loop /snap/gnome-characters/296
> loop13 7:13 0 140.7M 1 loop /snap/gnome-3-26-1604/92
> loop14 7:14 0 89.1M 1 loop /snap/core/7917
> loop15 7:15 0 956K 1 loop /snap/gnome-logs/81
> loop16 7:16 0 4.2M 1 loop /snap/gnome-calculator/501
> loop17 7:17 0 54.4M 1 loop /snap/core18/1144
> sda 8:0 0 111.8G 0 disk
> =E2=94=9C=E2=94=80sda1 8:1 0 96.9G 0 part /
> =E2=94=9C=E2=94=80sda2 8:2 0 1K 0 part
> =E2=94=94=E2=94=80sda5 8:5 0 15G 0 part [SWAP]
> sdb 8:16 0 2.7T 0 disk
> =E2=94=94=E2=94=80sdb1 8:17 0 2.7T 0 part
> =E2=94=94=E2=94=80md127 9:127 0 2.7T 0 raid1
> =E2=94=94=E2=94=80md127p1 259:0 0 2.7T 0 md /home
> sdc 8:32 0 2.7T 0 disk
> =E2=94=94=E2=94=80sdc1 8:33 0 2.7T 0 part
> =E2=94=94=E2=94=80md127 9:127 0 2.7T 0 raid1
> =E2=94=94=E2=94=80md127p1 259:0 0 2.7T 0 md /home
> sdd 8:48 1 7.5G 0 disk
> =E2=94=94=E2=94=80sdd1 8:49 1 7.5G 0 part /media/eggert/B8=
27-D456
> sr0 11:0 1 1024M 0 rom
> $ df -x tmpfs -x devtmpfs -x squashfs
> Filesystem 1K-blocks Used Available Use% Mounted on
> /dev/sda1 99431552 11740452 82597212 13% /
> /dev/md127p1 2884021472 1326329584 1411168908 49% /home
> /dev/sdd1 7812864 4705136 3107728 61% /media/eggert/B827-D=
456
X-Loop: help-debbugs@HIDDEN
Subject: bug#37702: Suggestion for 'df' utility
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On 10/14/19 1:01 AM, Kamil Dudka wrote:
> This is not an excuse to introduce new problems.
I'm not looking for an "excuse". df (through no fault of its own) has
evolved into a bad program that needs fixing. Backward compatibility
concerns are real and we should take them into account, but they should
not be an "excuse" for refusing to fix a bad program.
X-Loop: help-debbugs@HIDDEN
Subject: bug#37702: Suggestion for 'df' utility
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On 2019/10/11 12:56, Paul Eggert wrote:
> On 10/11/19 11:20 AM, P=C3=A1draig Brady wrote:
> =20
>> if you want to exclude nested file systems like that,
>> you could try:
>> alias df=3D'df -x squashfs'
>> =20
> On my Fedora 30 workstation that option doesn't make any difference.=20
> =20
------
I'd suggest adjusting the exclusion list to the file systems you want to
exclude.
I.e.
alias df=3D'df -x tmpfs -x devtmpfs -x loop'
That works on my system as well as:
alias df=3D'df -t xfs'
Certainly prompting the user for wanted defaults and adding them to
their .shellrc could be part of an initial run of *some* utilities
that wouldn't cause hard-coded side-effects.
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