Re: [lfs-support] Boot freezes
On 09/27/2018 05:07 PM, Ken Moffat wrote: On Thu, Sep 27, 2018 at 10:37:09PM +0200, Frans de Boer wrote: On 9/27/18 10:01 PM, Bruce Dubbs wrote: Ken and Bruce, I suspected it has to do something with entropy, so I used 4.9.88 - 4.9.2 dit not compiled - and the result was the same. So, since 4.9.88 is from somewhere in March I assume that there is no provision yet for the spectre etc. issue. 4.9 ? Really ? Rather you than me, I will be surprised if it works with gcc-8.2. And yes, of course I did "modules_install", the modules are installed and the initramfs is generated properly too. Until August all worked well, but after August it did not anymore. We seem to be at cross purposes. You said you were using the development book, now you mention an initramfs so clearly you have at least something from BLFS. So, specifying the version(s) of the books might be relevant. I've only booted (sysv) later than 8.3 on two systems, one with 4.14.71, the other with 4.18.9, using LFS-20180920 and BLFS-20180915 with occasional newer versions, and neither have the entropy problem. BUT: with 4.18.x and your delay of 12 seconds - What boot messages (sysv) follow after that 12 second delay (and yes, just a summary of WHICH bootscript runs after the delay - I know what it is like trying to write down the messages once the bootscripts are running.) cat /var/log/boot.log -- Bruce -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
Re: [lfs-support] Boot freezes
On Thu, Sep 27, 2018 at 10:37:09PM +0200, Frans de Boer wrote: > On 9/27/18 10:01 PM, Bruce Dubbs wrote: > Ken and Bruce, > > I suspected it has to do something with entropy, so I used 4.9.88 - 4.9.2 > dit not compiled - and the result was the same. So, since 4.9.88 is from > somewhere in March I assume that there is no provision yet for the spectre > etc. issue. > 4.9 ? Really ? Rather you than me, I will be surprised if it works with gcc-8.2. > And yes, of course I did "modules_install", the modules are installed and > the initramfs is generated properly too. Until August all worked well, but > after August it did not anymore. > We seem to be at cross purposes. You said you were using the development book, now you mention an initramfs so clearly you have at least something from BLFS. So, specifying the version(s) of the books might be relevant. I've only booted (sysv) later than 8.3 on two systems, one with 4.14.71, the other with 4.18.9, using LFS-20180920 and BLFS-20180915 with occasional newer versions, and neither have the entropy problem. BUT: with 4.18.x and your delay of 12 seconds - What boot messages (sysv) follow after that 12 second delay (and yes, just a summary of WHICH bootscript runs after the delay - I know what it is like trying to write down the messages once the bootscripts are running.) ĸen -- Tout est bien, tout va bien, tout va pour le mieux qu'il soit possible -- Candide, de Voltaire (Everything is for the best, in the best of all possible worlds) -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
Re: [lfs-support] Boot freezes
On 9/27/18 10:01 PM, Bruce Dubbs wrote: On 09/27/2018 02:21 PM, Frans de Boer wrote: LS, I have a problem which I don't seem to be able to solve without further help. Using the development version for LFS, I get stuck every time during boot time. It happens either after the message "Fast init done" or right thereafter - with a delay of aprox 12 seconds - at the message "Fast crng done". This problem is with the standard LFS as well as the LFS-systemd. Anyone has a suggestion? It sounds like a kernel configuration issue. For your message is seems that it doesn't even get to /sbin/init which is where the userspace is initiated. You don't say what version of the kernel you are using, but I suppose it is it 4.18.9. Did you do 'make modules_install' ? You might want to try an earlier known good kernel version. -- Bruce Ken and Bruce, I suspected it has to do something with entropy, so I used 4.9.88 - 4.9.2 dit not compiled - and the result was the same. So, since 4.9.88 is from somewhere in March I assume that there is no provision yet for the spectre etc. issue. And yes, of course I did "modules_install", the modules are installed and the initramfs is generated properly too. Until August all worked well, but after August it did not anymore. As far as I understand /sbin/init is called after enough random data has been collected. I just remember that sysvinit has been upgraded too to 2.90 instead of 2.89 with patches. Might a problem there? I will certainly give it a try to use 2.89 again, just to satisfy my curiosity ;) I also will make myself familiar with debugging the boot procedure. Somewhere on the Internet there must be a good tutorial to find. --- Frans. -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
Re: [lfs-support] Boot freezes
On 09/27/2018 02:21 PM, Frans de Boer wrote: LS, I have a problem which I don't seem to be able to solve without further help. Using the development version for LFS, I get stuck every time during boot time. It happens either after the message "Fast init done" or right thereafter - with a delay of aprox 12 seconds - at the message "Fast crng done". This problem is with the standard LFS as well as the LFS-systemd. Anyone has a suggestion? It sounds like a kernel configuration issue. For your message is seems that it doesn't even get to /sbin/init which is where the userspace is initiated. You don't say what version of the kernel you are using, but I suppose it is it 4.18.9. Did you do 'make modules_install' ? You might want to try an earlier known good kernel version. -- Bruce -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
Re: [lfs-support] Boot freezes
On Thu, Sep 27, 2018 at 09:21:02PM +0200, Frans de Boer wrote: > LS, > > I have a problem which I don't seem to be able to solve without further > help. > > Using the development version for LFS, I get stuck every time during boot > time. It happens either after the message > "Fast init done" or right thereafter - with a delay of aprox 12 seconds - at > the message "Fast crng done". > > This problem is with the standard LFS as well as the LFS-systemd. > > Anyone has a suggestion? > > Rgards, Frans. > Off the top of my head, I'll guess lack of entropy. Changes were made in the previous 2 or 3 kernel versions to fix vulnerabilities, particularly related to generating secure secrets, but with the side effect that booting can take longer (*much* longer in VMs). The reals question is "what starts after the delay ?" For the entropy problem, it would need to be something using random seeds. But 12 seconds is not a long time for the entropy problem - are you thumping the keyboards during that time ? (that adds to the entropy). So, maybe it is something else such as dhcp. Without knowing what starts next, this is all guess work. Following comments are only relevant if a lack of entropy is indeed the problem. On my desktop machines, those with only SSD(s) and integrated graphics had the entropy problem, those with spinning rust - and the one with an SSD and a separate video card - did not. To generate entropy, haveged is the current answer. With 4.19 kernels there should be an option to trust the hardware RNG (if you have one). ĸen -- Tout est bien, tout va bien, tout va pour le mieux qu'il soit possible -- Candide, de Voltaire (Everything is for the best, in the best of all possible worlds) -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
[lfs-support] Boot freezes
LS, I have a problem which I don't seem to be able to solve without further help. Using the development version for LFS, I get stuck every time during boot time. It happens either after the message "Fast init done" or right thereafter - with a delay of aprox 12 seconds - at the message "Fast crng done". This problem is with the standard LFS as well as the LFS-systemd. Anyone has a suggestion? Rgards, Frans. -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
