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Forum Discussion
how to remove a hard disk clean from a raid (RN 314, using SSH)
Hey there, i would like to remove a specific hard drive from the volume cleanly. First, is my plan very risky, even possible at all in this way? Afaik i would first use: btrfs device ...
What is the larger goal?
-replace a disk
-create a smaller RAID array
-???
I want to find out the cause of my sporadic freezes while accessing smb shares.
It might be a single hard drive, which i installed some months ago - i suppose the freezes occures after installing this drive.
So i want to remove this drive, to see if its working fine then.
Have you checked the SMART stats? Normally you'd power down the NAS and test that particular drive with the vendor diags.
You could potentially remove it (with the NAS running) and you'd still have all your data - but no RAID redundancy. Then hot-insert the drive after the balance test - which would rebuild the array. No need for SSH.
Another option is just buy a replacement disk, and replace the one you don't trust.
Do you have backups of the data? There's always some risk when you fiddle with the disks.
Hi, i just removed a suspicious hard drive - bam - there it is. This hdd WAS the cause for these random freezings. I will exchange her asap.
The volume status is now degraded. Can i tell the volumen to remove the removed drive permanently cleanly?
I don't need the extra space currently.
i have backups here, yes.
joel80 wrote:
The volume status is now degraded. Can i tell the volumen to remove the removed drive permanently cleanly?
Unfortunately you can't.
You either need to
(a) replace the drive,
(b) or destroy the volume, recreate it, and restore data from backup.
If you go with (b) uninstall your apps first, and reinstall them when you are done. The apps data is saved on the data volume, so it will get lost when you destroy it.
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