upper limit size for loopback storage

[FHDATA]

hello,

i am creating a test 400mb loopback storage:

# dd if=/dev/zero of=/jnkdsk  bs=400M  count=1
# losetup  /dev/loop1 /jnkdsk
# mkfs.ext4 /dev/loop1
# mount /dev/loop1 /mnt/jnkdsk


in day to day usage of loopback storage
in terms of I/O performance, susceptibility
to data corruption ,etc,etc   what is
the upper limit size after which it's not
recommended to use loopback storage?



thank you,
F-

Re: [resolved] multiple windows, not multiple tabs

[FHDATA]

issue was unintended consequence of my  customization.

i had:

System Settings->Windows Behavior->Windows Behavior->Advanced tab

checked the Windows Tabbing's Automatically group similar windows.


i have un-checked that box now.




Thank you,
F-



On Wed, 19 Jul 2017, FHDATA wrote:




hello all,

this is a KDE 4.14.x question.

a showstopper I need to find a remedy/fix
or find myself another desktop.


It seems that in KDE everything is single-instance!


in particular I am in need of being able to launch
multiple instances of Konsole or heck even a whole
bunch of xterms 
All I get is  one window with tabs

can not work only with one window with multiple tabs.
I want multiple windows/instances.


Am I missing any hidden Preferences or Setting somewhere?

Any reasonable work-around?

Thank you,
F-

multiple windows, not multiple tabs

[FHDATA]

hello all,

this is a KDE 4.14.x question.

a showstopper I need to find a remedy/fix
or find myself another desktop.


It seems that in KDE everything is single-instance!


in particular I am in need of being able to launch
multiple instances of Konsole or heck even a whole
bunch of xterms 
All I get is  one window with tabs

can not work only with one window with multiple tabs.
I want multiple windows/instances.


Am I missing any hidden Preferences or Setting somewhere?

Any reasonable work-around?

Thank you,
F-

Re: system drive encryption question

[FHDATA]

On Wed, 5 Apr 2017, FHDATA wrote:



hello,

I am not currently using debian as linux OS but
considering it ...


If I clean install debian (latest of course) and during
the install process have  its / (system drive)
encrypted with pass-phrase 

then later on, can I add a key, residing on
a usb flash drive,  to that encryption?

if yes, is there a step-by-step method one can follow  to do that?



thank you,
F-






i apologize for not sending a timely response back;
just being busy;

thanks to all who provided feedback from
which  i learned:



  1. possibility of using a 3rd party 2fa solution (e.g. yubico)
 [relaying on internet during boot may be undesirable...]


  2. in LUKS  one of the other remaining 7  slots can be utilize for path 
to encryption key ...



  3. system boot process looks for & mounts a external
usb device and use the key on it .


  4. utilizing Password Agents ,Plymouth, (of systemd) to
prompt user for 'some passphrase for  '


  5. /etc/default/cryptdisks {seems to be a debian/ubuntu centric
thing, which is fine...}




#2 seems unlikely but i will investigate further.

combination of #3 + #4  looks promising ...

#5 seems to be tailored solution for this sort of things ...
but needs testing...


i like to keep things simple:
no /boot encryption, no LVM , RAID ,etc


someday every linux distro during the
install process will ask the user for
the 2nd auth factor residing on an external device.

till then i will do more reading & testing ...


F-

system drive encryption question

[FHDATA]

hello,

I am not currently using debian as linux OS but
considering it ...


If I clean install debian (latest of course) and during
the install process have  its / (system drive)
encrypted with pass-phrase 

then later on, can I add a key, residing on
a usb flash drive,  to that encryption?

if yes, is there a step-by-step method one can follow  to do that?



thank you,
F-