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need syntax for /etc/fstab to mount space on an ssd over /tmp

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  need syntax for /etc/fstab to mount space on an ssd over /tmp Gene Heskett <gheskett@shentel.net> - 2020-02-17 06:20 +0100
    Re: need syntax for /etc/fstab to mount space on an ssd over /tmp Andrei POPESCU <andreimpopescu@gmail.com> - 2020-02-17 07:40 +0100
      Re: need syntax for /etc/fstab to mount space on an ssd over /tmp Gene Heskett <gheskett@shentel.net> - 2020-02-17 16:40 +0100
    Re: need syntax for /etc/fstab to mount space on an ssd over /tmp elvis <elvis@dogonfire.com> - 2020-02-17 09:30 +0100
      Re: need syntax for /etc/fstab to mount space on an ssd over /tmp Klaus Singvogel <deb-user-ml@singvogel.net> - 2020-02-17 11:10 +0100
        Re: need syntax for /etc/fstab to mount space on an ssd over /tmp Carl Fink <carlf@panix.com> - 2020-02-17 13:00 +0100
          Re: need syntax for /etc/fstab to mount space on an ssd over /tmp Klaus Singvogel <deb-user-ml@singvogel.net> - 2020-02-17 16:50 +0100
          Re: need syntax for /etc/fstab to mount space on an ssd over /tmp Gene Heskett <gheskett@shentel.net> - 2020-02-17 17:10 +0100
        Re: need syntax for /etc/fstab to mount space on an ssd over /tmp Gene Heskett <gheskett@shentel.net> - 2020-02-17 17:10 +0100

#219208 — need syntax for /etc/fstab to mount space on an ssd over /tmp

Greetings all;

I am trying to remove as much write activity as possible from the u-sd 
that a raspi boots from.  To that end I'll create a partition on an ssd, 
of 5000 megs, then copy the existing /tmp's contents to it it, then 
mount the ssd partition of that name on top of it where it is in the 
u-sd now. A partition labeled tmp-u-sd-temp would be about the least 
mistake prone to put in /etc/fstab. I did this once at least a decade or 
more ago because I outgrew the /home/partition but can't in 2020 
remember the fstab syntax a decade+ later.

Can someone help?

Thanks.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>

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#219210

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On Lu, 17 feb 20, 00:10:52, Gene Heskett wrote:
> Greetings all;
> 
> I am trying to remove as much write activity as possible from the u-sd 
> that a raspi boots from.  To that end I'll create a partition on an ssd, 
> of 5000 megs, then copy the existing /tmp's contents to it it, then 
> mount the ssd partition of that name on top of it where it is in the 
> u-sd now. A partition labeled tmp-u-sd-temp would be about the least 
> mistake prone to put in /etc/fstab. I did this once at least a decade or 
> more ago because I outgrew the /home/partition but can't in 2020 
> remember the fstab syntax a decade+ later.
 
To mount by label:

# what              where   type    options     dump    fsck order
LABEL=tmp-u-sd-temp /tmp    ext4    noatime     0       2

man fstab

Kind regards,
Andrei
-- 
http://wiki.debian.org/FAQsFromDebianUser

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#219224

On Monday 17 February 2020 01:34:02 Andrei POPESCU wrote:

> On Lu, 17 feb 20, 00:10:52, Gene Heskett wrote:
> > Greetings all;
> >
> > I am trying to remove as much write activity as possible from the
> > u-sd that a raspi boots from.  To that end I'll create a partition
> > on an ssd, of 5000 megs, then copy the existing /tmp's contents to
> > it it, then mount the ssd partition of that name on top of it where
> > it is in the u-sd now. A partition labeled tmp-u-sd-temp would be
> > about the least mistake prone to put in /etc/fstab. I did this once
> > at least a decade or more ago because I outgrew the /home/partition
> > but can't in 2020 remember the fstab syntax a decade+ later.
>
> To mount by label:
>
> # what              where   type    options     dump    fsck order
> LABEL=tmp-u-sd-temp /tmp    ext4    noatime     0       2
>
> man fstab
>
Thanks Andrei.

> Kind regards,
> Andrei


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>

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#219212

On 17/2/20 3:10 pm, Gene Heskett wrote:
> Greetings all;
>
> I am trying to remove as much write activity as possible from the u-sd
> that a raspi boots from.  To that end I'll create a partition on an ssd,
> of 5000 megs, then copy the existing /tmp's contents to it it, then
> mount the ssd partition of that name on top of it where it is in the
> u-sd now. A partition labeled tmp-u-sd-temp would be about the least
> mistake prone to put in /etc/fstab. I did this once at least a decade or
> more ago because I outgrew the /home/partition but can't in 2020
> remember the fstab syntax a decade+ later.
>
> Can someone help

This is not the asked solution to the problem, but why not just have 
your root on nfs? No need to worry about any writes to the card then.



> Thanks.
>
> Cheers, Gene Heskett

-- 
All that glitters has a high refractive index.

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#219216

elvis wrote:
> 
> On 17/2/20 3:10 pm, Gene Heskett wrote:
> > Greetings all;
> > 
> > I am trying to remove as much write activity as possible from the u-sd
> > that a raspi boots from.  To that end I'll create a partition on an ssd,
> > of 5000 megs, then copy the existing /tmp's contents to it it, then
> > mount the ssd partition of that name on top of it where it is in the
> > u-sd now. A partition labeled tmp-u-sd-temp would be about the least
> > mistake prone to put in /etc/fstab. I did this once at least a decade or
> > more ago because I outgrew the /home/partition but can't in 2020
> > remember the fstab syntax a decade+ later.
> > 
> > Can someone help
> 
> This is not the asked solution to the problem, but why not just have your
> root on nfs? No need to worry about any writes to the card then.

I, for myself, have the problem, that can't catch him.

He is speaking about a u-sd, but I'm only familiar with: ssd or usb.
Both sound similar, are different to handle, and at the end it's something
completly different he want's to know.

Best regards,
	Klaus.
-- 
Klaus Singvogel
GnuPG-Key-ID: 1024R/5068792D  1994-06-27

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#219217

On 2/17/20 5:00 AM, Klaus Singvogel wrote:
> elvis wrote:
>> On 17/2/20 3:10 pm, Gene Heskett wrote:
>>> Greetings all;
>>>
>>> I am trying to remove as much write activity as possible from the u-sd
>>> that a raspi boots from.  To that end I'll create a partition on an ssd,
>>> of 5000 megs, then copy the existing /tmp's contents to it it, then
>>> mount the ssd partition of that name on top of it where it is in the
>>> u-sd now. A partition labeled tmp-u-sd-temp would be about the least
>>> mistake prone to put in /etc/fstab. I did this once at least a decade or
>>> more ago because I outgrew the /home/partition but can't in 2020
>>> remember the fstab syntax a decade+ later.
>>>
>>> Can someone help
>> This is not the asked solution to the problem, but why not just have your
>> root on nfs? No need to worry about any writes to the card then.
> I, for myself, have the problem, that can't catch him.
>
> He is speaking about a u-sd, but I'm only familiar with: ssd or usb.
> Both sound similar, are different to handle, and at the end it's something
> completly different he want's to know.
>

I believe he means a "micro SD" and is using the letter "u" to stand in 
for Greek mu.

-- 
Carl Fink                           nitpicking@nitpicking.com

Read my blog at blog.nitpicking.com.  Reviews!  Observations!

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#219225

Carl Fink wrote:
> On 2/17/20 5:00 AM, Klaus Singvogel wrote:
> > elvis wrote:
> > > On 17/2/20 3:10 pm, Gene Heskett wrote:
> > > > Greetings all;
> > > > 
> > > > I am trying to remove as much write activity as possible from the u-sd
> > > > that a raspi boots from.  To that end I'll create a partition on an ssd,
> > > > of 5000 megs, then copy the existing /tmp's contents to it it, then
> > > > mount the ssd partition of that name on top of it where it is in the
> > > > u-sd now. A partition labeled tmp-u-sd-temp would be about the least
> > > > mistake prone to put in /etc/fstab. I did this once at least a decade or
> > > > more ago because I outgrew the /home/partition but can't in 2020
> > > > remember the fstab syntax a decade+ later.
> > > > 
> > > > Can someone help
> > > This is not the asked solution to the problem, but why not just have your
> > > root on nfs? No need to worry about any writes to the card then.
> > I, for myself, have the problem, that can't catch him.
> > 
> > He is speaking about a u-sd, but I'm only familiar with: ssd or usb.
> > Both sound similar, are different to handle, and at the end it's something
> > completly different he want's to know.
> > 
> 
> I believe he means a "micro SD" and is using the letter "u" to stand in for
> Greek mu.

Thanks. This clarifies it.

The synatx of fstab is so often to find in the net, that I don't want
to copy&paste it again. Look at: https://wiki.debian.org/fstab

Some hints from me:

- I prefer using UUIDs for instead of device names (see above link)

- /tmp is usually not the place where a lot of data is written.
  Noisy places are:
  - /var/log, and especially /var/log/journal
  - swap spaces, please check via your /proc/swaps
  - caches, like firefox, chromium uses in /home/<user>/.<something>
  - database files, found in /var/lib/<database>

Best regards,
	Klaus.
-- 
Klaus Singvogel
GnuPG-Key-ID: 1024R/5068792D  1994-06-27

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#219226

On Monday 17 February 2020 06:57:56 Carl Fink wrote:

> On 2/17/20 5:00 AM, Klaus Singvogel wrote:
> > elvis wrote:
> >> On 17/2/20 3:10 pm, Gene Heskett wrote:
> >>> Greetings all;
> >>>
> >>> I am trying to remove as much write activity as possible from the
> >>> u-sd that a raspi boots from.  To that end I'll create a partition
> >>> on an ssd, of 5000 megs, then copy the existing /tmp's contents to
> >>> it it, then mount the ssd partition of that name on top of it
> >>> where it is in the u-sd now. A partition labeled tmp-u-sd-temp
> >>> would be about the least mistake prone to put in /etc/fstab. I did
> >>> this once at least a decade or more ago because I outgrew the
> >>> /home/partition but can't in 2020 remember the fstab syntax a
> >>> decade+ later.
> >>>
> >>> Can someone help
> >>
> >> This is not the asked solution to the problem, but why not just
> >> have your root on nfs? No need to worry about any writes to the
> >> card then.
> >
> > I, for myself, have the problem, that can't catch him.
> >
> > He is speaking about a u-sd, but I'm only familiar with: ssd or usb.
> > Both sound similar, are different to handle, and at the end it's
> > something completly different he want's to know.
>
> I believe he means a "micro SD" and is using the letter "u" to stand
> in for Greek mu.

Exactly Carl.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>

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#219227

On Monday 17 February 2020 05:00:14 Klaus Singvogel wrote:

> elvis wrote:
> > On 17/2/20 3:10 pm, Gene Heskett wrote:
> > > Greetings all;
> > >
> > > I am trying to remove as much write activity as possible from the
> > > u-sd that a raspi boots from.  To that end I'll create a partition
> > > on an ssd, of 5000 megs, then copy the existing /tmp's contents to
> > > it it, then mount the ssd partition of that name on top of it
> > > where it is in the u-sd now. A partition labeled tmp-u-sd-temp
> > > would be about the least mistake prone to put in /etc/fstab. I did
> > > this once at least a decade or more ago because I outgrew the
> > > /home/partition but can't in 2020 remember the fstab syntax a
> > > decade+ later.
> > >
> > > Can someone help
> >
> > This is not the asked solution to the problem, but why not just have
> > your root on nfs? No need to worry about any writes to the card
> > then.
>
> I, for myself, have the problem, that can't catch him.
>
> He is speaking about a u-sd, but I'm only familiar with: ssd or usb.
> Both sound similar, are different to handle, and at the end it's
> something completly different he want's to know.
>
The u-sd is the usual abbreviation for the teeny little 64G micro-sd card 
the pi boots from.  With 64G to play in its going to last a lot longer 
before it fails than an 8G card, and removeing temporary writes to /tmp 
by transferring them to a SSD plugged into a usb3 port, it should last 
at least until the rapture. Or until my pacemaker needs replaced in 
another 9 years because the battery is failing.  Since I'm now 85, that 
would make me 94 yo then.

Does this clarify it for you? :)

> Best regards,
> 	Klaus.


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
If we desire respect for the law, we must first make the law respectable.
 - Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/gene>

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