Re: Relocating many homes in subfolders of a dedicated internal HDD

From	William Unruh <unruh@invalid.ca>
Newsgroups	alt.os.linux
Subject	Re: Relocating many homes in subfolders of a dedicated internal HDD
Date	2019-06-15 01:30 +0000
Organization	A noiseless patient Spider
Message-ID	<qe1hog$3lk$1@dont-email.me> (permalink)
References	(2 earlier) <qe0etp$7go$1@dont-email.me> <qe0g17$b00$1@dont-email.me> <qe103j$gof$1@dont-email.me> <qe11dm$l4m$1@dont-email.me> <qe1cru$hed$1@dont-email.me>

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On 2019-06-15, Soviet_Mario <SovietMario@CCCP.MIR> wrote:
> Il 14/06/19 22:52, William Unruh ha scritto:
>> On 2019-06-14, Soviet_Mario <SovietMario@CCCP.MIR> wrote:
>>> Il 14/06/19 17:55, William Unruh ha scritto:
>>>> On 2019-06-14, Soviet_Mario <SovietMario@CCCP.MIR> wrote:
>>>>> Il 14/06/19 07:05, J.O. Aho ha scritto:
>>>>>> On 13/06/2019 20.47, Soviet_Mario wrote:
>>>>>>
>>>>>>> I'd want to leverage to f12 bios option (boot device
>>>>>>> manual selection) to make a choice.
>>>>>>
>>>>>> Should work well, but you may up with a huge list of boot
>>>>>> options on each individual grub installer as many
>>>>>> distributions has setup a script to find other installed
>>>>>> OS:es on the machine.
>>>>>>
>>>>>>
>>>>>>> Meanwhile, as I have a big NEW and certified hdd (non ssd,
>>>>>>> a WD-red 2 TB), I'd also be willing to move the actual
>>>>>>> data of every HOME of any distro, each in a separate
>>>>>>> subtree of "\homes" shared folder.
>>>>>>
>>>>>> I would avoid using a samba share, it's slower and do not
>>>>>> support everything that is expected from a Linux file system.
>>>>>>
>>>>>> NFS would be a lot better.
>>>>>
>>>>> I surely missed the point (if NSF stands for network file
>>>>                                   ^^^
>>>> 	No NSF stands for National Science Foundation. NFS
>>>> 	stands for network file system.
>>>>
>>>>> system) : all drives are connected to the same PC, so the
>>>>> system bus would be the most simple choice i guess ...
>>>>
>>>> So just mount them.
>>>> And you certainly do not want to use NFS or Samba.
>>>>
>>>>>
>>>>>>
>>>>>> Issue you can have with network file systems is that all the
>>>>>> lock files can exhaust the IO. So you want to keep the
>>>>>> writes and reads to a minimum, so avoid using google chrome,
>>>>>> chromium, firefox and so on.
>>>>>>
>>>>>>
>>>>>>> I have thought of SYMLINKING.
>>>>>>
>>>>>> Why? Never thought of using the correct path instead when
>>>>>> you mount the directory?
>>>>>
>>>>> this sound as a very interesting point, could you please
>>>>> make an example of what you mean ?
>>>>>
>>>>> My base problem remains I don't really understand what mount
>>>>> exactly mean internally. I remain attached willy nilly to
>>>>> the old idea of phisical partitions seen as devices where
>>>>> they are :\
>>>>>
>>>> Mount means: If you have a physical partition (or a file for that
>>>> matter) make the contents of that partition available on a mountpoint in
>>>> the filesystem.
>>>>
>>>> mount /dev/sda7 /local/donaldduck
>>>> means make the contents of the partition /dev/sda7 available at
>>>> /local/donaldduck
>>>
>>> first of all, I apologize for my english (in the other
>>> branch I was not able to convey the meaning ... i'm sorry)
>>> that said,
>>>
>>> I still don't understand the perspective of the proposed
>>> solution
>>> when I read "mount /dev/sda7 /local/donaldduck
>>>    means make the contents of the partition /dev/sda7
>>> available at /local/donaldduck"
>>>
>>> I have the impression this is THE REVERSE of what I'm asking
>> 
>> Since I have no idea what you are asking I cannot comment on this.
>> 
>>>
>>> I don't want to state :
>> 
>> You don't want to state what?
>> 
>>> I'll speak vis a vis the kernel :
>> 
>> What has the kernel to do with this.
>
> I meant "to the system overall" as a person
>
>> 
>>>
>>> hey, this is a partition that makes no particular sense to
>>> you, expose me at the folder name I'm suggesting
>>>
>>> the question to me seems
>>>
>>> hey, you expect a particular folder named /home/guy then
>>> search it on a certain FOLDER (and not on a partition or a disk)
>> 
>> No idea what you mean by "Folder".
>
> means DIRECTORY, that is an object of another level (a 
> particular object in a file system) compared to a DEVICE
>
> I'll have to understand if a folder/directory can be 
> remounted onto another (residing in another FS) or if this 
> is just another (wrong) way to call symlinking

Data is on partitions on a disk. It cannot (well it can but usualy is
not) be read directly. You mount the partition into the filesystem, so
that the directory you mounted it on is where you access the data. 
Yes, you can remount a directory or a file onto another location in the
filesystem (called a bind mount). You can also use soft links to go via
an alternate directory, or file name. 

To soft link
If /local/daffy is a soft link to /alt/daisy, then you can refer to a
file say /alt/daisy/pluto also as /local/daffy/pluto.
The system will go through the path, and when it gets to daffy, it will
read that directory's entry in the filesystem and see that it should go
to /alt/daisy, and finally find /local/daffy/pluto as /alt/daisy/pluto.


>
>
>
>> 
>> The disk stores the data in partitions, and inodes are the locations on
>> the disk where the data is stored (very crudely speaking). . That is the
>> hardware which you do not want to be bothered with. You want
>> to look at the data. To do so you have "expose the data" by mounting
>> it on the filesystem. The kernel does the job of translating your
>> request to look at the contents of /home/guy/secretporn to the locations
>> on the disk where the data is located.
>> 
>>>
>>> I'm still not understanding if the solutions proposed (also
>>> the one by Joaho) are actually addressing this problem.
>>> Likely yes, but I'm in doubt
>> 
>> NO idea what the problem is.
>> 
>>>
>>>
>>>>
>>>> However I have no idea what your last sentence means. If you are
>>>> thinking of the Windows idea of "mounting" where the contents of
>>>> /dev/sda7 are made available at some silly drive letter E: for example,
>>>> then that is NOT what linux does. It does not force you to remember what
>>>> in the world drive Q: contains. you just mount it at a reasoanble point
>>>> in your filesystem, with a name of the mountpoint hopefully giving you a
>>>> clue as to what is in there
>>>> /local/place/where/I/want/to/mount/mypicturebook
>>>> for example.
>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>
>>>
>
>

Thread

Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-13 20:47 +0200
  Re: Relocating many homes in subfolders of a dedicated internal HDD "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2019-06-13 17:35 -0400
    Re: Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-14 00:01 +0200
      Re: Relocating many homes in subfolders of a dedicated internal HDD "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2019-06-13 19:28 -0400
        Re: Relocating many homes in subfolders of a dedicated internal HDD Bit Twister <BitTwister@mouse-potato.com> - 2019-06-13 19:23 -0500
      Re: Relocating many homes in subfolders of a dedicated internal HDD "Carlos E.R." <robin_listas@es.invalid> - 2019-06-14 10:29 +0200
    Re: Relocating many homes in subfolders of a dedicated internal HDD marrgol <marrgol@address.invalid> - 2019-06-14 02:13 +0200
      Re: Relocating many homes in subfolders of a dedicated internal HDD "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2019-06-13 23:45 -0400
        Re: Relocating many homes in subfolders of a dedicated internal HDD Paul <nospam@needed.invalid> - 2019-06-14 07:34 -0400
          Re: Relocating many homes in subfolders of a dedicated internal HDD "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2019-06-14 09:59 -0400
            Re: Relocating many homes in subfolders of a dedicated internal HDD "Carlos E.R." <robin_listas@es.invalid> - 2019-06-15 13:08 +0200
              Re: Relocating many homes in subfolders of a dedicated internal HDD Paul <nospam@needed.invalid> - 2019-06-15 11:58 -0400
                Re: Relocating many homes in subfolders of a dedicated internal HDD "Carlos E.R." <robin_listas@es.invalid> - 2019-06-15 23:10 +0200
  Re: Relocating many homes in subfolders of a dedicated internal HDD Bit Twister <BitTwister@mouse-potato.com> - 2019-06-13 18:49 -0500
  Re: Relocating many homes in subfolders of a dedicated internal HDD "J.O. Aho" <user@example.net> - 2019-06-14 07:05 +0200
    Re: Relocating many homes in subfolders of a dedicated internal HDD "David W. Hodgins" <dwhodgins@nomail.afraid.org> - 2019-06-14 04:17 -0400
      Re: Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-14 17:41 +0200
        Re: Relocating many homes in subfolders of a dedicated internal HDD William Unruh <unruh@invalid.ca> - 2019-06-14 15:58 +0000
        Re: Relocating many homes in subfolders of a dedicated internal HDD "J.O. Aho" <user@example.net> - 2019-06-14 18:04 +0200
      Re: Relocating many homes in subfolders of a dedicated internal HDD "J.O. Aho" <user@example.net> - 2019-06-14 17:58 +0200
        Re: Relocating many homes in subfolders of a dedicated internal HDD Aragorn <thorongil@telenet.be> - 2019-06-14 18:36 +0200
          Re: Relocating many homes in subfolders of a dedicated internal HDD Bit Twister <BitTwister@mouse-potato.com> - 2019-06-14 12:01 -0500
          Re: Relocating many homes in subfolders of a dedicated internal HDD "J.O. Aho" <user@example.net> - 2019-06-14 19:18 +0200
            Re: Relocating many homes in subfolders of a dedicated internal HDD Aragorn <thorongil@telenet.be> - 2019-06-14 20:11 +0200
              Re: Relocating many homes in subfolders of a dedicated internal HDD "J.O. Aho" <user@example.net> - 2019-06-14 21:44 +0200
              Re: Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-18 12:50 +0200
                Re: Relocating many homes in subfolders of a dedicated internal HDD "J.O. Aho" <user@example.net> - 2019-06-18 21:50 +0200
                Re: Relocating many homes in subfolders of a dedicated internal HDD Aragorn <thorongil@telenet.be> - 2019-06-19 13:10 +0200
                Re: Relocating many homes in subfolders of a dedicated internal HDD "J.O. Aho" <user@example.net> - 2019-06-19 21:57 +0200
          Re: Relocating many homes in subfolders of a dedicated internal HDD "J.O. Aho" <user@example.net> - 2019-06-14 19:22 +0200
            Re: Relocating many homes in subfolders of a dedicated internal HDD Aragorn <thorongil@telenet.be> - 2019-06-14 20:02 +0200
    Re: Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-14 17:36 +0200
      Re: Relocating many homes in subfolders of a dedicated internal HDD Bit Twister <BitTwister@mouse-potato.com> - 2019-06-14 10:50 -0500
      Re: Relocating many homes in subfolders of a dedicated internal HDD William Unruh <unruh@invalid.ca> - 2019-06-14 15:55 +0000
        Re: Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-14 22:29 +0200
          Re: Relocating many homes in subfolders of a dedicated internal HDD William Unruh <unruh@invalid.ca> - 2019-06-14 20:52 +0000
            Re: Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-15 02:07 +0200
              Re: Relocating many homes in subfolders of a dedicated internal HDD William Unruh <unruh@invalid.ca> - 2019-06-15 01:30 +0000
          Re: Relocating many homes in subfolders of a dedicated internal HDD Aragorn <thorongil@telenet.be> - 2019-06-15 08:59 +0200
            Re: Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-17 19:43 +0200
  Re: Relocating many homes in subfolders of a dedicated internal HDD Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-06-15 19:47 +0200
    Re: Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-17 02:05 +0200
      Re: Relocating many homes in subfolders of a dedicated internal HDD Bit Twister <BitTwister@mouse-potato.com> - 2019-06-16 20:23 -0500
      Re: Relocating many homes in subfolders of a dedicated internal HDD Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-06-18 13:52 +0200
        Re: Relocating many homes in subfolders of a dedicated internal HDD Soviet_Mario <SovietMario@CCCP.MIR> - 2019-06-18 18:36 +0200
          Re: Relocating many homes in subfolders of a dedicated internal HDD Bit Twister <BitTwister@mouse-potato.com> - 2019-06-18 12:04 -0500
          Re: Relocating many homes in subfolders of a dedicated internal HDD William Unruh <unruh@invalid.ca> - 2019-06-18 21:37 +0000
          Re: Relocating many homes in subfolders of a dedicated internal HDD Pascal Hambourg <pascal@plouf.fr.eu.org> - 2019-06-20 23:31 +0200
            Re: Relocating many homes in subfolders of a dedicated internal HDD "J.O. Aho" <user@example.net> - 2019-06-21 10:25 +0200

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