Thanks for your clarification. But you didn't answer the second part of my 
question. Hope someone will address it.

I do have another question. Everyone of us knows that a read-only root file 
system is not enough for a live system. There always a need for some 
overlayfs/unionfs/aufs to have a writable root file system. So what is the 
technology used on OI? Thanks.


---- On Sat, 09 Jan 2021 16:41:18 +0700 Peter Tribble <[email protected]> 
wrote ----

 > On Sat, Jan 9, 2021 at 6:37 AM Hung Nguyen Gia via openindiana-discuss < 
 > [email protected]> wrote: 
 >  
 > > Most Linux distributions now employing SquashFS for their live system so 
 > > they are blazing fast even though being run from a slow USB 2.0 stick. I'm 
 > > posting this mail on one of such live system. I found OpenIndiana is using 
 > > another technology: 
 > > https://ptribble.blogspot.com/2012/10/those-strange-zlib-files.html 
 > > 
 > > Does this technology comparable to SquashFS? And if SquashFS is better, is 
 > > there any plan to switch to SquashFS? 
 > > 
 >  
 > The illumos distributions have alway used a compressed filesystem for the 
 > live image. 
 > There's no difference to squashfs in that respect - we're just normally 
 > compressing the 
 > whole image. There's no benefit to changing to a different scheme that's 
 > essentially 
 > identical. 
 >  
 > We do actually have a direct equivalent to squashfs already - dcfs. I've 
 > not seen it used 
 > much, although it was used on SPARC to compress the files in the boot 
 > archive. (On x86, 
 > the bootloader can read a compressed boot archive, so you don't need it 
 > there.) 
 >  
 > -- 
 > -Peter Tribble 
 > http://www.petertribble.co.uk/ - http://ptribble.blogspot.com/ 
 > _______________________________________________ 
 > openindiana-discuss mailing list 
 > [email protected] 
 > https://openindiana.org/mailman/listinfo/openindiana-discuss 
 > 


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