Request for explanation of error message
Bret Busby
bret.busby at gmail.com
Sun Jul 28 19:19:48 UTC 2019
On 29/07/2019, Bret Busby <bret.busby at gmail.com> wrote:
> On 29/07/2019, Mike Marchywka <marchywka at hotmail.com> wrote:
>> On Mon, Jul 29, 2019 at 01:01:03AM +0800, Bret Busby wrote:
>>> And, as I got a no free space warning, although I can't find where
>>> there is no free space, apart from the snap (?) area,
>>>
>>> "
>>> bret at bret-MD34045-2521:~$ df -h
>>> Filesystem Size Used Avail Use% Mounted on
>>> udev 16G 0 16G 0% /dev
>>> tmpfs 3.2G 1.6M 3.2G 1% /run
>>> /dev/sda7 92G 58G 30G 67% /
>>> tmpfs 16G 469M 16G 3% /dev/shm
>>> tmpfs 5.0M 4.0K 5.0M 1% /run/lock
>>> tmpfs 16G 0 16G 0% /sys/fs/cgroup
>>> /dev/loop0 128K 128K 0 100% /snap/software-boutique/39
>>> /dev/loop1 8.0M 8.0M 0 100% /snap/pulsemixer/23
>>> /dev/loop7 88M 88M 0 100% /snap/core/5328
>>> /dev/loop2 161M 161M 0 100% /snap/midori/451
>>> /dev/loop3 72M 72M 0 100% /snap/software-boutique/31
>>> /dev/loop4 87M 87M 0 100% /snap/ubuntu-mate-welcome/335
>>> /dev/loop5 89M 89M 0 100% /snap/core/7270
>>> /dev/loop8 8.0M 8.0M 0 100% /snap/pulsemixer/250
>>> /dev/loop6 88M 88M 0 100% /snap/ubuntu-mate-welcome/199
>>> /dev/sda1 96M 31M 66M 32% /boot/efi
>>> /dev/sda8 92G 63G 25G 73% /home
>>> tmpfs 3.2G 64K 3.2G 1% /run/user/1000
>>> /dev/sda9 92G 61M 87G 1% /media/bret/Data1
>>> /dev/sda10 92G 61M 87G 1% /media/bret/Data2
>>> "
>>>
>>>
>>> so I looked in the /var area, I noticed that the 48GB log file has
>>> much smaller zipped predecessors;
>>
>> This is probably log rotate. From the sizes, absent some activity you
>> know
>> about,
>> things probably went bad between 16th and 22nd and then escalated.
>>
>>>
>>> "
>>> bret at bret-MD34045-2521:~$ ls -l /var/log/lightdm/x*.*
>>> -rw------- 1 root root 48233766147 Jul 28 02:49 /var/log/lightdm/x-0.log
>>> -rw------- 1 root root 9770700 Jul 23 03:45
>>> /var/log/lightdm/x-0.log.3.gz
>>> -rw------- 1 root root 26392833 Jul 22 23:42
>>> /var/log/lightdm/x-0.log.4.gz
>>> -rw------- 1 root root 768 Jul 16 20:13
>>> /var/log/lightdm/x-0.log.5.gz
>>> -rw------- 1 root root 784 Jul 15 16:42
>>> /var/log/lightdm/x-0.log.6.gz
>>> -rw------- 1 root root 144 Jul 14 21:33
>>> /var/log/lightdm/x-0.log.7.gz
>>> -rw------- 1 root root 100 Jul 13 01:14
>>> /var/log/lightdm/x-0.log.8.gz
>>> "
>>>
>>> Weirdness abounds.
>>>
>>> I note that, in the /var/log/lightdm directory, the other log files
>>> have log1.gz and log2.gz , but, that one does not;
>>>
>>> "
>>> bret at bret-MD34045-2521:~$ ls -l /var/log/lightdm/
>>> total 47138780
>>> -rw------- 1 root root 0 Jul 28 02:53 lightdm.log
>>> -rw------- 1 root root 2822 Jul 28 02:50 lightdm.log.1.gz
>>> -rw------- 1 root root 2130 Jul 23 03:46 lightdm.log.2.gz
>>> -rw------- 1 root root 121 Jul 22 23:42 lightdm.log.3.gz
>>> -rw------- 1 root root 2252 Jul 16 20:13 lightdm.log.4.gz
>>> -rw------- 1 root root 1747 Jul 15 16:43 lightdm.log.5.gz
>>> -rw------- 1 root root 1691 Jul 7 01:09 lightdm.log.6.gz
>>> -rw------- 1 root root 1673 Jul 6 23:23 lightdm.log.7.gz
>>> -rw------- 1 root root 0 Jul 28 02:53 seat0-greeter.log
>>> -rw------- 1 root root 2294 Jul 28 02:50 seat0-greeter.log.1.gz
>>> -rw------- 1 root root 1912 Jul 23 03:46 seat0-greeter.log.2.gz
>>> -rw------- 1 root root 1934 Jul 16 20:13 seat0-greeter.log.3.gz
>>> -rw------- 1 root root 1459 Jul 15 16:43 seat0-greeter.log.4.gz
>>> -rw------- 1 root root 1501 Jul 7 01:09 seat0-greeter.log.5.gz
>>> -rw------- 1 root root 1432 Jul 6 23:23 seat0-greeter.log.6.gz
>>> -rw------- 1 root root 1429 Jul 6 23:33 seat0-greeter.log.7.gz
>>> -rw------- 1 root root 48233766147 Jul 28 02:49 x-0.log
>>> -rw------- 1 root root 9770700 Jul 23 03:45 x-0.log.3.gz
>>> -rw------- 1 root root 26392833 Jul 22 23:42 x-0.log.4.gz
>>> -rw------- 1 root root 768 Jul 16 20:13 x-0.log.5.gz
>>> -rw------- 1 root root 784 Jul 15 16:42 x-0.log.6.gz
>>> -rw------- 1 root root 144 Jul 14 21:33 x-0.log.7.gz
>>> -rw------- 1 root root 100 Jul 13 01:14 x-0.log.8.gz
>>> "
>>>
>>> So, I am assuming that that file corrupted, on or about 23 July, or,
>>> whatever automatically compacts and archives it, and, starts a new log
>>> file, failed, at about that time.
>>
>> Again, that is probably logrotate but the easiest thing to do is look at
>> the
>> last few lines
>> in any of the larger files and find similar lines farther up to establish
>> a
>> period of
>> error messages ( while they could all be unrelated as if being attacked
>> likely it is in an
>> infinite loop trying to get something restarted ). Once you have a full
>> period it
>> may be obvious what the problem is. Alternative, if you unzip the
>> x-0.log.4.gz file to the
>> console and just "more" it probably a few lines in you will see whatver
>> started it
>> as the earlier gzip files are quite small.
>>
>> If you boot in single user mode and have the console messages pop up, you
>> may
>> be able to execute some of the failed steps by hand and see if it
>> triggers
>> any error messages.
>>
>
> Whatever is happeing, I now have
>
> "
> bret at bret-MD34045-2521:~$ ls -l /var/log/lightdm/x*.*
> -rw------- 1 root root 64086904832 Jul 29 02:49 /var/log/lightdm/x-0.log
> "
>
> and no space left on the / partition.
>
> So, whatever is happening, the file, as it stands, has to be deleted,
> as it has rendered the system unusable.
>
And, after having run
sudo rm /var/log/lightdm/x-0.log
whilst the file no longer shows as being present, the space has not
been freed; still no free space in the / partition.
In going through the folders displayed by caja, in the / partition, I
note that proc shows as having about 875,000 items, "totalling 140.7TB
(0 bytes on disk)" (magic?).
The size of the HDD is 1TB.
/root and /lost+found are both unreadable when I try to find their
Properties, and, I can't find the deleted file anywhere else, to free
up its space, to provide free space in the / partition.
--
Bret Busby
Armadale
West Australia
..............
"So once you do know what the question actually is,
you'll know what the answer means."
- Deep Thought,
Chapter 28 of Book 1 of
"The Hitchhiker's Guide to the Galaxy:
A Trilogy In Four Parts",
written by Douglas Adams,
published by Pan Books, 1992
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