Software Sources UNREACHABLE !!!

bengaminrdx · 10-26-2016, 02:55 AM

Quote:

Originally Posted by Jjanel

Code:

lsof /var/lib/apt/lists/lock
pgrep apt (oh, you said none running)
ls -l /var/lib/apt/lists/lock

what does this code do ??

does it purge apt's

Jjanel · 10-26-2016, 03:02 AM

No, it's 'safe': it only does `ls` & ps...grep (you can check with `man` or web-searches)

That link mentions `rm...lock` which sounds fairly safe, but I don't know about the
sudo dpkg --configure -a (seems safe from reading `man dpkg` but may still 'hit' that lock)

sudo ls -l /var/lib/apt/lists/partial (to see what if any might be relevant)
Also, Post [a `cat` of] /etc/apt/sources.list.d/official-package-repositories.list

That link links to this, which mentions a 'race condition': "apt overlaps with update-manager automatically ..." but I don't know the `ps` name of UpdMgr... yes, pkg mgmt is complex... tons for me to research&learn... cache? Also, maybe post: sudo ls -lR /var/cache/apt

This displayed the lock filenames for me:

Code:

sudo strace -f -o zzz apt update; grep /lock zzz

(later, rm zzz) From all this, I'm guessing it is safe to `sudo rm` the lock file(s).
I did `rm` mine, and `apt update` still worked after I tried:
sudo rm /var/lib/apt/lists/lock /var/lib/dpkg/lock

I welcome replys from 'more-senior' LQ'ers here....

ondoho · 10-26-2016, 02:53 PM

ok, i didn't follow what jjanel suggested meanwhile, but...

Quote:

Originally Posted by bengaminrdx

i got this as a response

Code:

E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/lib/apt/lists/
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.

i saw this recently on a ubuntu system after a borked upgrade, and it fixed the system!

so, the good news: you are connected to the internet, and your system seems to be somewhat working.

the bad news:
your package management is messed up somehow.

please run

Code:

sudo dpkg --configure -a

in a terminal.
it will probably take a looooong time; 15min, 30min, who knows.

then make a FULL reboot.

then try the usual updates and upgrades.

if it still doesn't work, go back to post #3 and do what i asked.

bengaminrdx · 10-28-2016, 12:13 AM

alright nothings working

how do i restore the system

goumba · 10-28-2016, 03:40 AM

Quote:

Originally Posted by bengaminrdx

what does this code do ??

does it purge apt's

Bonus points to you just for asking. Always good habit to know whhat you're doing.

Ok, now, I have helped many who have broken apt (probably 7 of the 11 pages in my "subscribed threads"), and there becomes a point where you just have to fix it by forc, but before we do...

Now, I noticed you didn't try ondoho's suggestion. Try that first:

Code:

dpkg --configure -a

If any package was not fully installed and configured, this will fix that, if possible.

If it can't, it should tell you which package failed, and why it failed. You'll want to reinstall the package causing the problem, which may not be the package that's failing to install properly (note to self: I really should keep a bunch of error snippets handy for these cases). It may be a missing or broken dependency. Read dpkg's output carefully, and if unsure, post the output here.

[edit]I hesitate to mention this now, because you really want to fix this the right way. However, I don't know how impatient you are. Proceed past this point at your own risk.[/edit]

*****

If all of the above does not work, we can start to open up APT by force, make a backup of APT's stuff first:

Code:

cp -arf /var/lib/dpkg /var/lib/dpkg.backup

then remove the lock files (if you get an error any particular file doesn't exist, that's fine, we just want to be sure any possible lock file is removed):

Code:

/var/lib/dpkg/lock
/var/lib/apt/lists/lock
/var/cache/apt/archives/lock

After removing those files, run

Code:

apt-get update

Hopefully now you should be up and running.