Over 50GB: Difference between revisions
(Created page with "So we have contacted you, and you are reading this. Your account is so big, the data doesn't fit in your quota on the new server. How to proceed? 1. Decide what to move else...") |
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So we have contacted you, and | So we have contacted you, and we have agreed on what to move where. Here's what will happen now. | ||
1. Once you've told us what to move and where to move it, our servers will start copying data over. | |||
But even when that is done, you won't be moved unless you log off from all LWPs. | |||
2. So at some point in time, you log off entirely, from all LWPs, when you leave from work in the evening. You also turn off your computer, lest some process fails to stop and keeps the NFS server thinking you're logged in. | |||
3. The next morning (bar some malfunction) when you log in, your home directory is now on another server. Moreover, the directories marked for <code>/project</code> are no longer where they were. They are now in <code>/project/whatever_name_we_agreed_on</code>. | |||
Please note that | |||
ls /project | |||
will not show anything. Only when you actually access a directory under <code>/project</code> will it be mounted and shown. | |||
If <code>ls /project/yourdir</code> still doesn't show anything, the most likely cause is that your computer hasn't run for at least 20 minutes since we created the the /project/yourdir share. Your computer must be told about it (once) by the Puppet agent, which runs every 20 minutes. | |||
===Danger!=== | |||
<em>Do not access</em> <code>/project/whatever_name_we_agreed_on/moved-dirs</code> until <code>~/moved-dirs</code> have vanished from your home directory. | |||
While <code>~/moved-dirs</code> still exist, the copy under <code>/project</code> is just that: a copy. It may lag behind, or be incomplete, or be currently written by our scripts, or all of these. By accessing it, you now have modifications in both copies. That constitutes a mess, and since we warned you, it is you who gets to sort it out. | |||
Once <code>~/moved-dirs</code> have vanished, your account has been migrated, and the new path under /project is the only one. Only then is it fine to use it. | |||
===Handy symlinks=== | |||
Once you have been migrated (and not sooner, see the danger above), you could create symlinks from the old location to the new one: | |||
ln -sT /project/whatever_name_we_agreed_on/somedir ~/somedir | |||
There are programs that will treat a symlink differently from an ordinary file or directory, but most will keep working as if nothing had happened. | |||
Latest revision as of 07:59, 1 July 2018
So we have contacted you, and we have agreed on what to move where. Here's what will happen now.
1. Once you've told us what to move and where to move it, our servers will start copying data over.
But even when that is done, you won't be moved unless you log off from all LWPs.
2. So at some point in time, you log off entirely, from all LWPs, when you leave from work in the evening. You also turn off your computer, lest some process fails to stop and keeps the NFS server thinking you're logged in.
3. The next morning (bar some malfunction) when you log in, your home directory is now on another server. Moreover, the directories marked for /project are no longer where they were. They are now in /project/whatever_name_we_agreed_on.
Please note that
ls /project
will not show anything. Only when you actually access a directory under /project will it be mounted and shown.
If ls /project/yourdir still doesn't show anything, the most likely cause is that your computer hasn't run for at least 20 minutes since we created the the /project/yourdir share. Your computer must be told about it (once) by the Puppet agent, which runs every 20 minutes.
Danger!
Do not access /project/whatever_name_we_agreed_on/moved-dirs until ~/moved-dirs have vanished from your home directory.
While ~/moved-dirs still exist, the copy under /project is just that: a copy. It may lag behind, or be incomplete, or be currently written by our scripts, or all of these. By accessing it, you now have modifications in both copies. That constitutes a mess, and since we warned you, it is you who gets to sort it out.
Once ~/moved-dirs have vanished, your account has been migrated, and the new path under /project is the only one. Only then is it fine to use it.
Handy symlinks
Once you have been migrated (and not sooner, see the danger above), you could create symlinks from the old location to the new one:
ln -sT /project/whatever_name_we_agreed_on/somedir ~/somedir
There are programs that will treat a symlink differently from an ordinary file or directory, but most will keep working as if nothing had happened.