Disk Space 6% used but no space left on device in Amazon EC2 Linux BTRFS file system

The output for df -h is:

Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1      196G   12G  184G   6% /

The output for df -i is:

Filesystem      Inodes IUsed   IFree IUse%
 Mounted on
/dev/xvda1           0     0       0     - /

The output for blkid:

/dev/xvda1: UUID="4a1d89b1-5cd6-4716-9aab-f187108abd1a" UUID_SUB="d10faf32-6262-4f6e-adf0-fc74984bf5ed" TYPE="btrfs" PARTUUID="000cbad2-01"
/dev/xvda2: UUID="199566f6-8820-4077-9587-f64530eff0ca" TYPE="swap" PARTUUID="000cbak2-02"

Also had observed that killing the process from the output of lsof / | grep deleted was bringing down the usage of disk from 100% to as low as 20% (a random number) but I am not sure if it is releasing the space.

Still getting the error:

cp: cannot create regular file ‘/etc/abc/apps’: No space left on device.

I am posting the question for the first time. Not sure what all might be the requirements. Let me if any further information is required

Nidhi

Posted 2019-02-07T06:07:02.583

Reputation: 1

3The 0 inodes isn't a problem in this case. BTRFS is... very different. It's a common problems for df to give inaccurate results. Instead try sudo btrfs filesystem usage /. – Cliff Armstrong – 2019-02-07T06:20:47.317

I didn't even notice the BTRFS in the Q, off to the side there in the blkid output, it should be more prominent, I'll edit – Xen2050 – 2019-02-07T09:07:23.997

Thanks for the prompt response.Later I googled for the bugs reported for btrfs and found that there is a bug where it shows that btrfs gives No disk space even when df -h does not say so.The following is the link. https://btrfs.wiki.kernel.org/index.php/Problem_FAQ

– Nidhi – 2019-02-08T08:38:20.997

Disk Space 6% used but no space left on device in Amazon EC2 Linux BTRFS file system

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