Cannot make a copy of video DVD with k3b

[Rick Stevens]

On 08/07/2014 12:32 PM, Paul Cartwright issued this missive:
> On 08/07/2014 02:52 PM, Rick Stevens wrote:
>>
>> The fix is to "systemctl mask tmp.mount" and reboot your system. This
>> will leave /tmp pointing at your hard disk. I've done it on all my
>> systems.
> I tried that...
> before
>
> # df -h
> Filesystem      Size  Used Avail Use% Mounted on
> /dev/sdb1        20G   13G  5.6G  70% /
> devtmpfs        3.9G     0  3.9G   0% /dev
> tmpfs           3.9G   38M  3.9G   1% /dev/shm
> tmpfs           3.9G  1.3M  3.9G   1% /run
> tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
> tmpfs           3.9G   11M  3.9G   1% /tmp
> /dev/sda6       147G   70G   70G  51% /home2
> /dev/sda7       919G  301G  572G  35% /backups
> /dev/sdb7       870G  567G  304G  66% /extra
> /dev/sdb4       145G   63G   75G  46% /home
> /dev/sdb3       778G  497G  242G  68% /media/my_data
>
> after rebooting:
>   df -h
> Filesystem      Size  Used Avail Use% Mounted on
> /dev/sdb1        20G   13G  5.6G  70% /
> devtmpfs        3.9G     0  3.9G   0% /dev
> tmpfs           3.9G   76K  3.9G   1% /dev/shm
> tmpfs           3.9G  9.3M  3.9G   1% /run
> tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
> /dev/sda6       147G   70G   70G  51% /home2
> /dev/sda7       919G  301G  572G  35% /backups
> /dev/sdb4       145G   63G   75G  46% /home
> /dev/sdb7       870G  567G  304G  66% /extra
> /dev/sdb3       778G  497G  242G  68% /media/my_data
>
> so it went from 4 to 3 tmpfs processes??
> or is it just the lack of the tmpfs process /tmp ??

First, /tmp starts out as just a directory on the root filesystem ("/").

Before your reboot, the system created a tmpfs filesystem and mounted
it at /tmp. Therefore it's listed as a separate filesystem in "df"
(because there IS a separate filesystem of type "tmpfs" mounted there)
and it's 3.9G in size (meaning you probably have 8G of RAM).

After your reboot, /tmp remains just a directory on your / filesystem.
It won't display as a separate filesystem (because nothing's mounted
there) and your / filesystem is 20G with 5.6G free at the moment.

This new layout (with 5.6G free) would have been enough to create the
ISO image in /tmp, whereas with the tmpfs crap, /tmp was only 3.9G and
half your RAM was sucked up by that. Now you have all 8G of RAM
available.
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- Rick Stevens, Systems Engineer, AllDigital    ricks at alldigital.com -
- AIM/Skype: therps2        ICQ: 22643734            Yahoo: origrps2 -
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-   To err is human.  To forgive, a large sum of money is needed.    -
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