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Complete Newbie here, so please be gentle. I am forcing myself off all MS products and will accept as much support as anyone is willing to give me. It is all extremely appreciated.
I have a Dell PE2900 with a 6 disc PERC RAID5 array. Everything is fine, FC16, all logical discs mounted including the PERC RAID array which is showing as one logical volume. Using KDE.
The RAID array shows up in Dolphin with just the usual lost+found, but I cannot create any folders or move anything to it - the "Create New" is just greyed out. I am quite sure it is a permissions thing, but I need some guidance here to get this. I have been looking through the forums, however I believe this is a pretty simple problem so may not be answered by the experts. Can anybody assist here?
Much appreciated from a desperate to learn Newbie.
Who set up the filesystem on the RAID and how is it being mounted? It looks like it's an array of 6 500GB disks in RAID5, giving you an array size of 2.5TB. Is that right? I notice it's not using a GPT partition table, which means the partition is going to be limited to 2TB.
Posting the output of "df -h" should confirm this, assuming the RAID is currently mounted. Posting the output of "cat /etc/fstab" will show how it's being mounted.
Edit: beat to the punch
Last edited by suicidaleggroll; 04-04-2012 at 05:04 PM.
Your RAID is not currently mounted. Is this how the system looks when you launch Dolphin and see the Lost+Found? Where is this Lost+Found directory that you see?
I believe the partitioning tool used in the Fedora installer is fdisk-based, which can't handle GPT so it can't do more than 2TB. The following will switch your RAID to a GPT partition table, make a single partition the full size, and create an ext4 filesystem on it. This operation WILL DESTROY ANYTHING ON THE ARRAY, so make sure there isn't anything you need on it, and make sure you use the correct device name (which, according to your fdisk output earlier, is /dev/sdb).
Perhaps we should find out what the OP actually wants first before reconfiguring the disk. Simple enough to add another partition and add the pv to the vg.
What are you planning on using the array for - LVM particularly ?. Multiple filesystems ?. One large filesystem ?.
It will be set up as one large filesystem. The unit will be a file server for around 20 users on a LAN.
I am just running through the instructions below.. will post the outcome shortly...
Perhaps we should find out what the OP actually wants first before reconfiguring the disk. Simple enough to add another partition and add the pv to the vg.
True. I've found that the Fedora installer falls on its face with any disks (or RAID arrays) >2TB though. Even if you only want a 2TB partition on it and don't want GPT, it still does some really weird stuff. Every time I set up a Fedora system with a >2TB disk, I always have to go back and re-partition it manually before the system will use it correctly. I figured I'd just skip all of the middle steps in trying to figure out how to use the disk as it stands and just post how to switch it over and repartition it from scratch, since that's most likely where the conversation would have ended up anyway. Especially since he had just created it and the array was blank, there's no need to worry about lost data.
Last edited by suicidaleggroll; 04-04-2012 at 05:46 PM.
That's probably because the mount location (/mnt/perc_raid in my example) was created as root. Chmod 777 /mnt/perc_raid should fix that.
Once you're satisfied with how it's working, you should decide on a permanent location for the array in your filesystem, and then add it to /etc/fstab to mount it automatically. You probably won't want 777 permissions permanently, instead you'll want to set the owner and group properly and switch it to maybe 755 or 775. It all depends on where you're going to put it and what you're going to do with it though.
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