[REINSTALL] moved /var to another partition - now everything is borked

Ah, I reckon I might have shot my install
I was running out of space and seeing that /var took up some 3GB I decided to move it to another partition and adjust the fstab accordingly. It all worked but on reboot hal didn't start. I tried to reinstall it with pacman and now I am told:
error: database path is undefined
error: could not register 'core' database (could not open database)
Am I shot???
Last edited by toad (2009-04-18 23:15:15)

All that's in /var/cache/pacman/pkg are packages. You can keep packages if you're afraid something will break and only rolling back to older packages will fix it (which for some people it does), but there are some mirrors out there that update slower than others (so the thing is to pick a mirror that syncs often, so if you really need to downgrade, you can grab the older packages from a slower mirror for example).
I clean out my package cache periodically. If something breaks and I need to roll back (which happened to me with the bluetooth upgrade) I usually check the web CVS frontend for the PKGBUILDs and rebuild what I need.
In general, there's no reason to hold on to your cache - and certainly not that big a cache. If you keep it under a GB you should be safe, generally that covers most if not all packages you installed, one version back. You'll have to sift, though.

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ok so my (C) disk was low on space, so I went to iTunes, and moved itunes to another drive. after I went throught that whole process, I copyed the iTunes folder from the (c) drive to the (d) drive (the new drive) and then after it had finished pasting, I deleted the iTunes folder from the original drive. I then opened itunes and it now is empty what do I do in order to get everything back? thankyou in advance.

annaliesebieberninjaaah wrote:
ok so my (C) disk was low on space, so I went to iTunes, and moved itunes to another drive. after I went throught that whole process, I copyed the iTunes folder from the (c) drive to the (d) drive (the new drive)
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You moved iTunes to another drive and then then you copied the iTunes folder to the D: drive?
How did you first move iTunes to another drive?
Then why did you copy the iTunes folder after that? Isn't this moving iTunes to another drive"
Hold Shift and launch iTunes.
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[SOLVED] Problem in moving /var to new partition

Hi,
I setup a new systemd Arch instalation on an SSD and migrated successfully from my old initscripts based HDD setup. I have 2 problems now, one leading to another.
I wanted to move /var to a partition on HDD and followed the following steps.
Created a new reiserfs partition for var on my HDD using gparted. Labelled it as "var"
Rebooted to emergency mode and mounted it. (I remounted root as read-write)
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Copied var contents to new_var
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# mount /dev/sda8 /var
Added the following line to /etc/fstab
LABEL=var /var reiserfs defaults 0 1
When I reboot after this, systemd is timing out waiting for a var partition. Here is an pic taken during boot.
I restored the old var using the emergency shell and could reboot properly. I tried the same thing as a normal user using sudo after the system was up. (During the moving, I got sudo warnings because the sudo folder in /var/db wasnt there.)
With the new var partition in place, I proceeded to install a few packages. But when I rebooted, I the same thing happened again and had to get into emergency shell and restore the old var.
However, after this, the packages which I installed in the interim are not available in pacman database.
So,
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2. Is there a way to rescan or rebuild the pacman database? Will syncing the 2 different var setups that I've solve the problem? If so, how can I sync them?
Last edited by kungsu (2012-11-04 14:54:25)

I'm thinking in collision propabilities here. How probably might the device node change? I have machines that keep doing this without a real reason. I'd prefer labels on such machines. Other machines don't - without a real reason as well. I'd prefer device node notation on such machines. Labels can be changed manually, new partitions can be added and USB sticks with labled partitions can be inserted. While the USB situation should not be a big deal, both, labels as well as device nodes can be subject to changes, collisions and other arbitrary events. The only thing that is unlikely to change (for no obvious reason), be altered by accident or made collide with another one, are UUIDs.
I would not say using lables is bad, it's just that if you already have an issue, why not rule that out? It seemed to have solved the issue, it can be as easy as playing safe sometimes. Furthermore, the reason why I recommended to change the label from "var" to something else, is how common "var" is. It is like using a keyword in a programming language as a variable name, it may or may not work, so why not make it a habbit of not using such meta-keywords at all?
EDIT: There is no particular reason, I suspect the lable isn't set correctly. Maybe there is a problem with the partition table - that's where I'd suspect the LABLE to be stored.
Or maybe you just did the whole by-label thing wrong.
"/dev/disk/by-label/var" instead of LABEL="var"…
Last edited by Awebb (2012-11-04 15:27:43)

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[REINSTALL] moved /var to another partition - now everything is borked

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