Re: [gentoo-user] Copying root to SSD in one go...a good idea...or?

[tuxic@posteo.de]

On 04/05 07:22, Michael wrote:
> On Sunday, 5 April 2020 18:54:25 BST tuxic@posteo.de wrote:
> > On 04/05 10:33, Mark Knecht wrote:
> > > On Sun, Apr 5, 2020 at 10:13 AM <tuxic@posteo.de> wrote:
> > > > Hi,
> > > > 
> > > > currentlu I am preparing a new Gentoo Linux by compiling all
> > > > the application I had on my old system.
> > > > 
> > > > Due to delivery problems (corona) my SSD was delivered today
> > > > (or yesterday...it depends...;) .
> > > > 
> > > > When the whole compilation has finished and the system boots it
> > > > needs to be transfered to the SSD.
> > > > 
> > > > The SSD has a heat spreader...so it gets hot, when used.
> > > > 
> > > > Is it wise to copy the whole root system to the SSD in one go
> > > > in respect to a not so healthy heat increase?
> > > > 
> > > > And if not...how can I copy the root system in portions
> > > > to the SSD and do not miss anything?
> > > > 
> > > > Are there SDD-friendly and SSD-unfriendlu methods of copying
> > > > greater chunks of data to a SSD (rsync, tar-pipe, cp....)?
> > > > What is recommended here?
> > > > 
> > > > Thanks a lot for any help for a SSD newbie in advance!
> > > > 
> > > > Cheers! And stay heathy!
> > > > Meino
> > > 
> > > Just my 2 cents...
> > > 
> > > If the SSD cannot survive having data copied to it there's something
> > > seriously wrong with the drive. I don't think you should be overly worried
> > > about this but I do understand it's new technology so you want to be
> > > careful. Bravo for that.
> > > 
> > > Possibly to ease your concerns a little bit use smartctl -a /dev/SSD and
> > > get to know your drive that way. You can most likely watch the drive temp
> > > as recorded by the drive.
> > > 
> > > Best wishes,
> > > Mark
> > 
> > Hi Mark,
> > 
> > Yes, if a SSD could not survive writes, something is wrong with the
> > SSD. But that was not my point.
> > Copying about 100GB (roughly guessed) data in one go to the SSD is a
> > use case, which is not common. And therefore possibly not taken into
> > account by the company, which create that SSD.
> > SSDs can create noticeable heat (mine has a minimalistic heat
> > spreader therefore. Faster SSDs come with a substancial heatspreader).
> > 
> > Smartctl will report problems when they are already there.
> > I want to prevent problems beforehand.
> > 
> > So -- does copying about 100 GB creates so much heat in the sillicone
> > of the SSD, that it ages more than preferred?
> > 
> > And if so, how can I prevent it by appluing other techniques to copy
> > the data?
> > See additional questions in my initial posting for that.
> 
> With rsync you could add the option:
> 
> --bwlimit=RATE          limit socket I/O bandwidth
> 
> and select a low enough bandwidth limit to keep the packets flowing at a low 
> rate to remain cool enough for your liking.  
> 
> However, I'll echo what other have said about not worrying about these things.  
> The OEMs must run some rudimentary tests to establish performance envelopes 
> and keep everything tuned just so.
> 
> Nevertheless, if you do not trust them to produce the best quality products, 
> then we share something in common!  LOL!
> 
> In this case, you may want to open the PC case and use a desktop fan to keep 
> the interior of the case even cooler than usual, during your copying process.

That one is nice! Thanks a lot for that...

And yes, Michael, same here. I am not veru convinced, that everything
is well tested and tested for all use cases...

The fan is a nice idea also - these real world solytion does not pop
up in my head easily...they are kind of too real ;)
I will use a fan, if smartctl i.e. will report high temperatures...

Cheers!
Meino