Re: other drive

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Author: Michael
Date:  
To: Carruth, Rusty
CC: Main PLUG discussion list
Subject: Re: other drive
Thanks for this information. So what should I do?

On Fri, Aug 19, 2016 at 12:34 PM, Carruth, Rusty <>
wrote:

> Did you log out and back in after mounting the 2nd drive?
>
>
>
> If you added the drive and then ran a GUI-based program there is a
> better-than-0 chance that your GUI still has a hold on the old /home folder.
>
>
>
> Let me try to explain.
>
>
>
> Before mounting the new drive on /home, if you do ‘cd /home;ls -lid .;ls
> -lid /home’ you might see number in the first column like 1213451 (for both
> ls outputs) - that is the i-node for the current /home dir and the current
> dir.
>
> Now, leave that window alone, switch to a new window, and mount the new
> drive. In that new window, do an ls -lid /home and you will (almost
> certainly) see a different number, say 1122.
>
> However, if you go back to that first window and say ls -lid . you’ll see
> 1213451. Now, in that same window, type ‘ls -lid /home’ and you’ll see the
> 1122!
>
>
>
> How is that??? . and /home are supposed to be the same!
>
>
>
> Well, no. your Bash shell did a cd /home and got the inode 1213451. Now
> it (IIRC) keeps that inode open. When you mount that new drive on /home,
> your shell still has the old /home dir open - and anything going from .
> will get the old inode on the original drive! So ‘.’ Is inode 1213451, and
> /home is inode 1122. In fact, ./../home will be inode 1122, as will
> ../home.
>
>
>
> Here is an example:
>
>
>
> Window 1:
>
> oakgatecontrol ~ # mkdir demo
>
> oakgatecontrol ~ # ls -lid demo
>
> 9973488 drwxr-xr-x 2 root root 4096 Aug 19 09:27 demo
>
> oakgatecontrol ~ # mount -o loop sdc.dd demo                # here is the
> mount I did, referenced below.

>
> oakgatecontrol ~ # ls -lid demo/
>
> 2 drwxr-xr-x 3 root root 1024 Aug 19 09:27 demo/
>
> oakgatecontrol ~ #
>
>
>
> window 2:
>
>
>
> oakgatecontrol ~ # ls -lid demo
>
> 9973488 drwxr-xr-x 2 root root 4096 Aug 19 09:27 demo
>
> oakgatecontrol ~ # cd demo
>
> oakgatecontrol demo # ls -lid . ../demo # this is BEFORE I mounted a
> filesystem on demo.
>
> 9973488 drwxr-xr-x 2 root root 4096 Aug 19 09:27 .
>
> 9973488 drwxr-xr-x 2 root root 4096 Aug 19 09:27 ../demo
>
> oakgatecontrol demo # ls -lid . ../demo      # this is AFTER I did the
> mount above.

>
> 9973488 drwxr-xr-x 2 root root 4096 Aug 19 09:27 .
>
>       2 drwxr-xr-x 3 root root 1024 Aug 19 09:27 ../demo

>
> oakgatecontrol demo #
>
>
>
>
>
> Now, please don’t let the fact that I used a file which I’d made into a
> filesystem confuse you - the effects are identical if you use a block
> special device.
>
>
>
> In fact, if I create a file inside the ‘demo’ which is NOT mounted, then
> mount the filesystem on demo, that 2nd window sees this:
>
>
>
> oakgatecontrol demo # ls -lid . ../demo ; ls -l . ../demo
>
> 9973488 drwxr-xr-x 2 root root 4096 Aug 19 09:32 .
>
>       2 drwxr-xr-x 3 root root 1024 Aug 19 09:27 ../demo

>
> .:
>
> total 0
>
> -rw-r--r-- 1 root root 0 Aug 19 09:32 foobar
>
>
>
> ../demo:
>
> total 12
>
> drwx------ 2 root root 12288 Aug 19 09:27 lost+found
>
> oakgatecontrol demo #
>
>
>
> (Unfortunately, this email will not make it to the PLUG list, since I can
> no longer email from the email address it uses to send these to me. Real
> Soon Now I will fix that, but for now you’re the only one who will see it,
> unless you reply all)
>
>
>
> Rusty
>
>
>
> *From:* [mailto:
> ] *On Behalf Of *Michael
> *Sent:* Friday, August 19, 2016 6:02 AM
> *To:* PLUG
> *Subject:* other drive
>
>
>
> I set my computer up with home on it's own drive. I discovered last night
> (when I was my gigapixel rendering) the setup is screwed up somehow (I came
> close to running out of disk space and df says there is a LOT of space on
> home). Could someone tell me where I screwed up and how to fix this? Well
> looking at df again it says /home is using 50 gig which indicates it is
> being used. Why did I run out of room?
>
>
>
> --
>
> :-)~MIKE~(-:
>




--
:-)~MIKE~(-:
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