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. * [http://docs.amahi.org/ubuntu-12.html Ubuntu]* [http://docs.amahi.org/fedora-19.html Fedora]  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, <u>'''DO NOT'''</u> 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 [[Adding_a_second_hard_drive_to_your_HDA#Mount_Hard_Drive|hda-diskmount]]. <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 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.}}</blockquote> Then this is what needs to be done:

* Before re-installing FedoraGo to Setup &raquo; and select [[Advanced_Settings|Enable Advanced Settings]] check box via the Amahi Dashboard* Add drives to Greyhole:<br />:<u>Ubuntu, please disconnect all data </u>:Go to Setup &raquo; Shares &raquo; Storage Pool and check your pooled drives. This will prevent you from potentially destroying any data during to add them to the re-installation processpool.* Install Amahi :<u>Fedora</u>:If using our installation guide[https://www.amahi.* Connect org/apps/greyhole-ui Greyhole UI], go to Setup &raquo; Drive Pooling &raquo; Partitions and check your data pooled drives back to your serveradd them to the pool (without the app, you will have to add them manually in ''/etc/greyhole.conf'').* Re-create your original shares in the Amahi Dashboard (see [[Storage_and_file_sharing|storage and file sharing]]:<br />:<u>Ubuntu</u>:You should make sure to select "Use Pool" and select the contents correct number of your previous extra copies. :<u>Fedora</u>:If using [https://www.amahi.org/etcapps/fstab 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 mount your data drives add them manually in their old paths''/etc/greyhole.conf'').

Note'''NOTE: This would allow ''' If you to remount the drives on the previous paths in don't remember all of your previous installation. For exampleoriginal shares, 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 check your Greyhole Storage Pool into the old /etc/fstab greyhole.conf file (which includes the extra number of your new Amahi installation.copies) or run the following:

Warning: Before you continue, you should check the ownership of the files and folders in ls -1 /var/hda/files to ensure that it belongs to <user>/drives/*/gh/ | grep -v :<group>| sort -u

and not under 500:users. This can be resolved by running the following commands as root* Run Greyhole's fsck command to rebuild your shares:

chown greyhole -R 1000:users /var/hda/files chmod -R g+w /var/hda/filesfsck

* Enable "Advanced Settings" with the Amahi Dashboard: Setup->Settings to allow access to Setup > Shares > Storage Pool.* Re-create your original shares in the Amahi Dashboard: Setup->Shares.** 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 sharesUntil this completes, 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 some of your data drives.* Run Greyhole's fsck command to rebuild files will be missing from your shares.