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List: fedora-devel-list
Subject: Re: Change proposal discussion - Optimize SquashFS Size
From: Lukas Brabec <lbrabec () redhat ! com>
Date: 2020-02-05 9:07:41
Message-ID: CAPsMpsbQ5Atbih5Y8qSrPEm8FgeQok-7DdFdE+UAQMVJT+SqLA () mail ! gmail ! com
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On Mon, Feb 3, 2020 at 5:55 PM Kevin Fenzi <kevin@scrye.com> wrote:
> So, I propose:
> reduce install time
> reduce image size
> reduce compose time
+1 Sounds very reasonable.
On Tue, Feb 4, 2020 at 1:22 PM Kamil Paral <kparal@redhat.com> wrote:
> ...
>
Exactly what Kamil wrote. Few percent grow is negligible, but install time
reduction is huge.
On Tue, Feb 4, 2020 at 4:44 PM Kevin Kofler <kevin.kofler@chello.at> wrote:
> The areas where hundreds of installations are performed from an image are
> hardly the common case, and those installations should really consider
> composing their own images with exactly the package set that they need
> (including site packages that Fedora cannot ship), images which they can
> then compress with a faster-to-decompress algorithm. I think that we
> should
> optimize for the standard user who installs exactly once.
>
It is pretty common for us in Fedora QA (well, I'm quite biased in this
case).
And no, we cannot compose our images, we have to test the exact same
images that will be shipped. We cannot test custom images and pretend
the results are going to be the same for official images.
And finally, those few percent can make the difference between fitting on a
> given fixed-size physical media or not. The original change proposal of
> trying to minimize the size might actually make at least the smaller spin=
s
> fit on a DVD again.
>
All current Fedora spins [1] are well within the DVD size limit (4.7GB),
even if
the images grow a few percent. This is also true for optical boot release
blocking images [2][3][4].
[1]
https://dl.fedoraproject.org/pub/fedora/linux/releases/31/Spins/x86_64/iso/
[2] https://fedoraproject.org/wiki/Releases/32/ReleaseBlocking
[3]
https://dl.fedoraproject.org/pub/fedora/linux/releases/31/Everything/x86_64=
/iso/
[4]
https://dl.fedoraproject.org/pub/fedora/linux/releases/31/Workstation/x86_6=
4/iso/
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<div dir="ltr"><div dir="ltr"><div class="gmail_default" style=""><div \
class="gmail_attr" style=""><span class="gmail_default" style=""><font face="arial, \
sans-serif"><div dir="ltr" class="gmail_attr"><span class="gmail_default" \
style=""></span>On Mon, Feb 3, 2020 at 5:55 PM Kevin Fenzi <<a \
href="mailto:kevin@scrye.com">kevin@scrye.com</a>> wrote:<br></div><blockquote \
class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex">So, I propose: <br> reduce install time<br>
reduce image size<br>
reduce compose time</blockquote></font></span></div><div class="gmail_attr" \
style=""><span class="gmail_default" style=""><font face="arial, \
sans-serif"><br></font></span></div><div class="gmail_attr" style=""><span \
class="gmail_default" style=""><font face="arial, sans-serif">+1 Sounds very \
reasonable.</font></span></div><div class="gmail_attr" style=""><span \
class="gmail_default" style=""><font face="arial, \
sans-serif"><br></font></span></div><div class="gmail_attr" style=""><span \
class="gmail_default" style=""><font face="arial, \
sans-serif"><br></font></span></div><div class="gmail_attr" style=""><span \
class="gmail_default" style=""><div dir="ltr" class="gmail_attr"><span \
class="gmail_default" style="font-family:monospace,monospace"></span>On Tue, Feb 4, \
2020 at 1:22 PM Kamil Paral <<a \
href="mailto:kparal@redhat.com">kparal@redhat.com</a>> wrote:<br></div><blockquote \
class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div \
class="gmail_attr">...</div></div></div></blockquote></span></div><div \
class="gmail_attr" style=""><span class="gmail_default" style=""><font face="arial, \
sans-serif"><br></font></span></div><div class="gmail_attr" style=""><span \
class="gmail_default" style=""><font face="arial, sans-serif">Exactly what Kamil \
wrote. Few percent grow is negligible, but install time</font></span></div><div \
class="gmail_attr" style=""><span class="gmail_default" style=""><font face="arial, \
sans-serif">reduction is huge.</font></span></div><div class="gmail_attr" \
style=""><br></div><div class="gmail_attr" style=""><br></div></div></div><div \
class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 4, 2020 at 4:44 PM \
Kevin Kofler <<a href="mailto:kevin.kofler@chello.at">kevin.kofler@chello.at</a>> \
wrote:</div><blockquote class="gmail_quote" style="margin:0px 0px 0px \
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> The areas where \
hundreds of installations are performed from an image are <br> hardly the common \
case, and those installations should really consider <br> composing their own images \
with exactly the package set that they need <br> (including site packages that Fedora \
cannot ship), images which they can <br> then compress with a faster-to-decompress \
algorithm. I think that we should <br> optimize for the standard user who installs \
exactly once.<br></blockquote><div><br></div><div><div class="gmail_default" \
style=""><font face="arial, sans-serif">It is pretty common for us in Fedora QA \
(well, I'm quite biased in this case).</font></div><div class="gmail_default" \
style=""><font face="arial, sans-serif">And no, we cannot compose our images, we have \
to test the exact same</font></div><div class="gmail_default" style=""><font \
face="arial, sans-serif">images </font><span \
style="font-family:arial,sans-serif">that will be shipped. We cannot test custom \
images and pretend</span></div><div class="gmail_default" style=""><span \
style="font-family:arial,sans-serif">the results </span><span \
style="font-family:arial,sans-serif">are going to be the same for official \
images.</span></div><div class="gmail_default" style=""><br></div></div><blockquote \
class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid \
rgb(204,204,204);padding-left:1ex">And finally, those few percent can make the \
difference between fitting on a <br> given fixed-size physical media or not. The \
original change proposal of <br> trying to minimize the size might actually make at \
least the smaller spins <br> fit on a DVD again.<br></blockquote><div><font \
face="arial, sans-serif"><br></font></div><div><span \
style="font-family:arial,sans-serif">All current Fedora spins [1] are well within the \
DVD size limit (4.7GB)</span><span style="font-family:arial,sans-serif">, even if \
</span><br></div><div><div class="gmail_default" style=""><font face="arial, \
sans-serif">the images grow a few percent. This is also true for optical boot \
release</font></div><div class="gmail_default" style=""><span \
style="font-family:arial,sans-serif">blocking images </span><span \
style="font-family:arial,sans-serif">[2][3][4].</span></div></div><div \
class="gmail_default" style=""><font face="arial, sans-serif"><br></font></div><div \
class="gmail_default" style=""><font face="arial, sans-serif"><br></font></div><div \
class="gmail_default" style="">[1] <a \
href="https://dl.fedoraproject.org/pub/fedora/linux/releases/31/Spins/x86_64/iso/">htt \
ps://dl.fedoraproject.org/pub/fedora/linux/releases/31/Spins/x86_64/iso/</a><font \
face="arial, sans-serif"><br></font></div><div class="gmail_default" style=""><span \
style="font-family:arial,sans-serif">[2] </span><a \
href="https://fedoraproject.org/wiki/Releases/32/ReleaseBlocking" \
style="font-family:arial,sans-serif">https://fedoraproject.org/wiki/Releases/32/ReleaseBlocking</a><br></div><div \
class="gmail_default" style="">[3] <a \
href="https://dl.fedoraproject.org/pub/fedora/linux/releases/31/Everything/x86_64/iso/ \
">https://dl.fedoraproject.org/pub/fedora/linux/releases/31/Everything/x86_64/iso/</a></div><div \
class="gmail_default" style="">[4] <a \
href="https://dl.fedoraproject.org/pub/fedora/linux/releases/31/Workstation/x86_64/iso \
/">https://dl.fedoraproject.org/pub/fedora/linux/releases/31/Workstation/x86_64/iso/</a></div></div></div>
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