Category Archives: Technology and Society

Weird Linux Problem

Anyone have any ideas why I can’t do a yum update in Fedora? Or rather, why I can’t write to the disk as root?

# yum update
Loaded plugins: langpacks, refresh-packagekit
Cannot open logfile /var/log/yum.log
Repository google-chrome is listed more than once in the configuration

[Errno 30] Read-only file system: ‘/var/cache/yum/x86_64/20/adobe-linux-x86_64/repomd.xml.old.tmp’

Here’s what I’m seeing at /:

# ls -l
total 65
lrwxrwxrwx. 1 root root 7 Dec 11 2013 bin -> usr/bin
dr-xr-xr-x. 6 root root 4096 Dec 22 14:47 boot
drwxr-xr-x. 21 root root 3520 Dec 24 09:15 dev
drwxr-xr-x. 140 root root 12288 Dec 24 09:15 etc
drwxr-xr-x. 4 root root 4096 Dec 20 2013 home
lrwxrwxrwx. 1 root root 7 Dec 11 2013 lib -> usr/lib
lrwxrwxrwx. 1 root root 9 Dec 11 2013 lib64 -> usr/lib64
drwx——. 2 root root 16384 Dec 11 2013 lost+found
drwxr-xr-x. 2 root root 4096 Nov 7 16:53 media
drwxr-xr-x. 3 root root 4096 Dec 20 2013 mnt
drwxr-xr-x. 4 root root 4096 Oct 29 15:18 opt
dr-xr-xr-x. 222 root root 0 Dec 24 09:14 proc
dr-xr-x—. 12 root root 4096 Dec 22 15:33 root
drwxr-xr-x. 34 root root 900 Dec 24 09:17 run
lrwxrwxrwx. 1 root root 8 Dec 11 2013 sbin -> usr/sbin
drwxr-xr-x. 2 root root 4096 Aug 7 2013 srv
dr-xr-xr-x. 13 root root 0 Dec 24 09:14 sys
drwxrwxrwt. 12 root root 280 Dec 24 09:21 tmp
drwxr-xr-x. 12 root root 4096 Dec 11 2013 usr
drwxr-xr-x. 21 root root 4096 Dec 24 09:14 var

Here’s /var:

# ls -l /var
total 112
drwxr-xr-x. 2 root root 4096 Dec 11 2013 account
drwxr-xr-x. 2 root root 4096 Aug 7 2013 adm
drwxr-xr-x. 14 root root 4096 Dec 20 2013 cache
drwxr-xr-x. 2 root root 4096 Aug 5 21:27 crash
drwxr-xr-x. 2 root root 4096 Aug 2 2013 cvs
drwxr-xr-x. 3 root root 4096 Oct 2 09:32 db
drwxr-xr-x. 3 root root 4096 Dec 11 2013 empty
drwxr-xr-x. 2 root root 4096 Aug 7 2013 games
drwxr-xr-x. 2 root root 4096 Aug 7 2013 gopher
drwxr-xr-x. 3 root root 4096 Aug 7 17:19 kerberos
drwxr-xr-x. 46 root root 4096 Dec 24 09:14 lib
drwxr-xr-x. 2 root root 4096 Aug 7 2013 local
lrwxrwxrwx. 1 root root 11 Dec 11 2013 lock -> ../run/lock
drwxr-xr-x. 15 root root 4096 Dec 24 09:15 log
lrwxrwxrwx. 1 root root 10 Dec 11 2013 mail -> spool/mail
drwxr-xr-x. 2 root root 4096 Aug 7 2013 nis
drwxr-xr-x. 2 root root 4096 Aug 7 2013 opt
drwxr-xr-x. 2 root root 4096 Aug 7 2013 preserve
lrwxrwxrwx. 1 root root 6 Dec 11 2013 run -> ../run
drwxr-xr-x. 10 root root 4096 Dec 11 2013 spool
drwxrwxrwt. 539 root root 36864 Dec 24 09:15 tmp
drwxr-xr-x. 2 root root 4096 Aug 7 2013 yp

I tried to just create a file in /root, with no success (though that’s not really surprising, given the permissions). What’s really weird is that I have no problems writing as a normal user. It’s just a problem with root. Which is, of course, a big problem. I’ve tried rebooting, with no joy.

[Later afternoon update]

OK, I’ve gotten the machine beaten into submission. I loaded Fedora 21 on a live USB, and (unlike Fedora 20) it will actually boot with my new motherboard. So I cleaned up the drives, then installed the new OS on the new SSD. I overmounted my old /home drive onto the new /home, and I’m reinstalling software, which is going very fast, because the SSD is very fast. With the new quad-core processor, I’m cooking with Crisco. Nice Christmas present to myself.

[Update a few minutes later]

Wow. Just did a reboot after a bunch of updates. Ten seconds.

Marsha Ivins

doesn’t like the asteroid mission.

Some Twitter responses:

Jerry Pournelle

He apparently suffered a minor stroke. From his son, Alex:

Jerry had a small stroke. He is recovering well at a local hospital. Prognosis is good, though they’re running more tests and he’s expected to stay at least another day or two.

“He felt well enough to call Mom [Mrs. Pournelle] from the hospital.

“Thank you for your thoughts and prayers. More updates when we have them.

I saw him a few weeks ago, and he seemed to be doing as well as a man his age who has recovered from a brain tumor could be expected to. Best wishes for a rapid recovery.