Difference between revisions of "Reconnect existing Greyhole storage pool"

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'''NOTE:'''  For the procedures below, most will require '''root''' user privileges.
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In order to speed up the entire process, you should backup the following files somewhere safe:
 
In order to speed up the entire process, you should backup the following files somewhere safe:
 
   /etc/greyhole.conf
 
   /etc/greyhole.conf
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This will allow you to rebuild your [[Greyhole]] Storage Pool much faster without needing to rebuild all links in your share before they can be used.
 
This will allow you to rebuild your [[Greyhole]] Storage Pool much faster without needing to rebuild all links in your share before they can be used.
  
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* Before re-installing Fedora/Ubuntu, please disconnect all data drives. This will prevent you from potentially destroying any data during the re-installation process.
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Before re-installing Fedora/Ubuntu, please disconnect all data drives. This will prevent you from potentially destroying any data during the re-installation process. Then, install Fedora/Ubuntu and Amahi using our installation guide.
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* Install Amahi using our installation guide.
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* Connect your data drives back to your server.
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* [http://docs.amahi.org/ubuntu-12.html Ubuntu]
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* Use the contents of your previous /etc/fstab to mount your data drives in their old paths.
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* [http://docs.amahi.org/fedora-19.html Fedora]
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Next, connect your data drives back to your server, then use the contents of your previous ''/etc/fstab'' to mount your data drives in their old paths (hint: copy and paste the lines that have mount points in '''/var/hda/files/drives/''').
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When you're finished, verify the mount points exist:
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ll /var/hda/files/drives
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If they do not, you will need to create them (replace ''drive1'' with what was reflected in ''/etc/fstab''):
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mkdir -p /var/hda/files/drives/drive1
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Now you are ready to mount the drives with:
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mount -a
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If there any errors, <u>'''DO NOT'''</u> continue until they are resolved.
  
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Note: This would allow you to remount the drives on the previous paths in your previous installation. For example, if you have one 1TB and one 2TB harddrive, and they were mounted as /var/hda/files/drives/drive1 and /var/hda/files/drives/drive2 repectively, it would be more efficient to remount your data drives on your new Amahi installation. This can be done by copying and pasting all of the mounts for your Greyhole Storage Pool into the /etc/fstab of your new Amahi installation.
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:'''NOTE:''' This would allow you to remount the drives on the previous paths in your previous installation. For example, if you have one 2TB and one 3TB harddrive, and they were mounted as /var/hda/files/drives/drive1 and /var/hda/files/drives/drive2 repectively, it would be more efficient to remount your data drives on your new Amahi installation in the same locations. However, if you didn't backup your fstab, simply remount the drives like you were installing them for the first time using [[Adding_a_second_hard_drive_to_your_HDA#Mount_Hard_Drive|hda-diskmount]].
  
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Warning: Before you continue, you should check the ownership of the files and folders in /var/hda/files to ensure that it belongs to  
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<blockquote>{{Warning|Warning: Before you continue, you should check the ownership of the files and folders in /var/hda/files to ensure that it belongs to  
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   <user>:<group>
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   1stadminuser:users
  
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and not under 500:users. This can be resolved by running the following commands as root:
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If not, this can be resolved by running the following commands as root:
  
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      chown -R 1000:users /var/hda/files
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chown -R 1stadminuser:users /var/hda/files
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      chmod -R g+w /var/hda/files
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chmod -R g+w /var/hda/files
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'''NOTE:'''  1stadminuser should be replaced with the primary user who has administration privileges on your HDA.  This is typically the first user created at install.
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}}</blockquote>
  
 
Then this is what needs to be done:
 
Then this is what needs to be done:
  
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* Enable "Advanced Settings" with the Amahi Dashboard: Setup->Settings to allow access to Setup > Shares > Storage Pool.
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* Go to Setup &raquo; and select [[Advanced_Settings|Enable Advanced Settings]] check box via the Amahi Dashboard
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* Re-create your original shares in the Amahi Dashboard: Setup->Shares.
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* Add drives to Greyhole:<br />
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**  You should make sure to select "Use Pool" and select the correct number of extra copies. If you don't remember all of your original shares, you can check your old /etc/greyhole.conf file (which includes the extra number of copies) or within the "gh" folder found at the root of your data drives.
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:<u>Ubuntu</u>
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* Run Greyhole's fsck command to rebuild your shares.
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:Go to Setup &raquo; Shares &raquo; Storage Pool and check your pooled drives to add them to the pool.
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:<u>Fedora</u>
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== Previous Guide ==
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:If using [https://www.amahi.org/apps/greyhole-ui Greyhole UI], go to Setup &raquo; Drive Pooling &raquo; Partitions and check your pooled drives to add them to the pool (without the app, you will have to add them manually in ''/etc/greyhole.conf'').
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* Re-create your original shares in the Amahi Dashboard (see [[Storage_and_file_sharing|storage and file sharing]]:<br />
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:<u>Ubuntu</u>
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:You should make sure to select "Use Pool" and select the correct number of extra copies.  
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:<u>Fedora</u>
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:If using [https://www.amahi.org/apps/greyhole-ui Greyhole UI], go to Setup &raquo; Shares and select the shares to use the pool. Also select the correct number of extra copies desired (without the app, you will have to add them manually in ''/etc/greyhole.conf'').
  
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<!--After re-install, recreate all your shares exacty as they were.<br>
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'''NOTE:'''  If you don't remember all of your original shares, you can check your old /etc/greyhole.conf file (which includes the extra number of copies) or run the following:
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Add the shares to the storage pool.<br>
 
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As root, run greyhole --fsck.<br>
 
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This  will recreate the symlinks in the landing zone /var/hda/files.<br>-->
 
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* Disconnect all data drives before you reinstall. This will prevent you from destroying them by mistake during the Fedora/Amahi install!
 
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* Install Amahi per the regular instructions.
 
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* Connect the data drives, and use hda-diskmount to remount all of them.
 
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Note that if you can, it would be faster if you can re-mount the drives in the same paths they used to have.
 
  
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'''Example:''' If you have one 1TB and one 2TB, and the 1TB was mounted as /var/hda/files/drives/drive1, and the 2TB was mounted as /var/hda/files/drives/drive2, it would be better to re-mount that like that on your new HDA. If you mount them otherwise, it will still work, but Greyhole will work a while to re-build the links in your share before they can be usable.
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ls -1 /var/hda/files/drives/*/gh/ | grep -v : | sort -u
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* Select the drives in the Amahi Dashboard: Setup > Shares > Storage Pool
 
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* Re-create your shares in the Amahi Dashboard: Setup > Shares.
 
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Make sure to select 'Use Pool', and select the correct number of extra copies.
 
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If you don't remember all the shares you had, just check inside the 'gh' folder found at the root of your drives to get a reminder!
 
  
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'''Example:'''
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* Run Greyhole's fsck command to rebuild your shares:
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{{Code|ls -1 /var/hda/files/drives/*/gh/ <nowiki>|</nowiki> grep -v : <nowiki>|</nowiki> sort -u}}
 
  
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* Launch a fsck to have Greyhole rebuild your shares.
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greyhole --fsck
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{{Code|greyhole --fsck}}
 
  
 
Until this completes, some of your files will be missing from your shares.
 
Until this completes, some of your files will be missing from your shares.

Latest revision as of 18:10, 9 August 2015

NOTE: For the procedures below, most will require root user privileges.


In order to speed up the entire process, you should backup the following files somewhere safe: 

 /etc/greyhole.conf

and 

 /etc/fstab

This will allow you to rebuild your Greyhole Storage Pool much faster without needing to rebuild all links in your share before they can be used.

Before re-installing Fedora/Ubuntu, please disconnect all data drives. This will prevent you from potentially destroying any data during the re-installation process. Then, install Fedora/Ubuntu and Amahi using our installation guide.


Next, connect your data drives back to your server, then use the contents of your previous /etc/fstab to mount your data drives in their old paths (hint: copy and paste the lines that have mount points in /var/hda/files/drives/).

When you're finished, verify the mount points exist: 

ll /var/hda/files/drives

If they do not, you will need to create them (replace drive1 with what was reflected in /etc/fstab): 

mkdir -p /var/hda/files/drives/drive1

Now you are ready to mount the drives with: 

mount -a

If there any errors, DO NOT continue until they are resolved.

NOTE: This would allow you to remount the drives on the previous paths in your previous installation. For example, if you have one 2TB and one 3TB harddrive, and they were mounted as /var/hda/files/drives/drive1 and /var/hda/files/drives/drive2 repectively, it would be more efficient to remount your data drives on your new Amahi installation in the same locations. However, if you didn't backup your fstab, simply remount the drives like you were installing them for the first time using hda-diskmount.
Warning!
Warning: Before you continue, you should check the ownership of the files and folders in /var/hda/files to ensure that it belongs to

1stadminuser:users

If not, this can be resolved by running the following commands as root:

chown -R 1stadminuser:users /var/hda/files chmod -R g+w /var/hda/files

NOTE: 1stadminuser should be replaced with the primary user who has administration privileges on your HDA. This is typically the first user created at install.

Then this is what needs to be done:

Ubuntu
Go to Setup » Shares » Storage Pool and check your pooled drives to add them to the pool.
Fedora
If using Greyhole UI, go to Setup » Drive Pooling » Partitions and check your pooled drives to add them to the pool (without the app, you will have to add them manually in /etc/greyhole.conf).
Ubuntu
You should make sure to select "Use Pool" and select the correct number of extra copies.
Fedora
If using Greyhole UI, go to Setup » Shares and select the shares to use the pool. Also select the correct number of extra copies desired (without the app, you will have to add them manually in /etc/greyhole.conf).

NOTE: If you don't remember all of your original shares, you can check your old /etc/greyhole.conf file (which includes the extra number of copies) or run the following: 

ls -1 /var/hda/files/drives/*/gh/ | grep -v : | sort -u
  • Run Greyhole's fsck command to rebuild your shares:
greyhole --fsck

Until this completes, some of your files will be missing from your shares.

Retrieved from "https://wiki.amahi.org/index.php?title=Reconnect_existing_Greyhole_storage_pool&oldid=94291"