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Forum Discussion
root partition full or not?
Got problems with apt. So I discovered if I remove some stuff from root partition apt works normally again.
So I tested to copy 1GB file to root, but in the middle says disk is full, but there should be 1.8GB free if I type df -h:
Someone who can help me?
So I tested to copy 1GB file to root, but in the middle says disk is full, but there should be 1.8GB free if I type df -h:
Filesystem Size Used Avail Use% Mounted on
rootfs 4.0G 2.2G 1.8G 56% /
tmpfs 10M 4.0K 10M 1% /dev
/dev/md0 4.0G 2.2G 1.8G 56% /
tmpfs 492M 0 492M 0% /dev/shm
tmpfs 492M 6.0M 487M 2% /run
tmpfs 492M 0 492M 0% /sys/fs/cgroup
tmpfs 492M 0 492M 0% /media
/dev/md127 3.7T 2.6T 1.1T 72% /data
/dev/md127 3.7T 2.6T 1.1T 72% /home
/dev/md127 3.7T 2.6T 1.1T 72% /apps
/dev/md127 3.7T 2.6T 1.1T 72% /var/ftp/Downloads
Someone who can help me?
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# df -iFilesystem Inodes IUsed IFree IUse% Mounted on
rootfs 0 0 0 - /
tmpfs 125928 404 125524 1% /dev
/dev/md0 0 0 0 - /
tmpfs 125928 1 125927 1% /dev/shm
tmpfs 125928 448 125480 1% /run
tmpfs 125928 4 125924 1% /sys/fs/cgroup
tmpfs 125928 1 125927 1% /media
/dev/md127 0 0 0 - /data
/dev/md127 0 0 0 - /home
/dev/md127 0 0 0 - /apps
/dev/md127 0 0 0 - /var/ftp/Downloads- Found this thread, maybe I am out of metedata space?
http://www.readynas.com/forum/viewtopic.php?f=23&t=80046root@nas-8B-24-BC:~# btrfs fi df /
Data, single: total=3.59GiB, used=1.91GiB
System, DUP: total=4.00MiB, used=4.00KiB
System, single: total=4.00MiB, used=0.00B
Metadata, DUP: total=204.69MiB, used=151.13MiB
But I can only select the data volume in ReadyNas frontview for balance.
How to balance my rootfs?
btrfs balance start / &
You might need to do e.g.
# btrfs balance start -dusage=1 / &
then once the balance completes do the earlier command I mentioned.root@nas-8B-24-BC:~# btrfs balance start / &
[1] 25882
root@nas-8B-24-BC:~# btrfs balance start -dusage=1 / &
[2] 25913
root@nas-8B-24-BC:~# ERROR: error during balancing '/' - Invalid argument
There may be more info in syslog - try dmesg | tail
ERROR: error during balancing '/' - No space left on device
There may be more info in syslog - try dmesg | tail
^C
[1]- Exit 1 btrfs balance start /
[2]+ Exit 1 btrfs balance start -dusage=1 /
root@nas-8B-24-BC:~# dmesg | tail
[<ffffffff880e76aa>] ? do_vfs_ioctl+0x8a/0x510
[<ffffffff880e7bcb>] ? sys_ioctl+0x9b/0xa0
[<ffffffff8888bf7b>] ? system_call_fastpath+0x16/0x1b
---[ end trace fb63a4239652823c ]---
systemd[1]: Unit systemd-journald.service entered failed state.
btrfs: 11 enospc errors during balance
systemd-journald[25908]: Fixed max_use=32.0M max_size=8.0M min_size=64.0K keep_free=204.6M
systemd-journald[25908]: Vacuuming...
systemd-journald[25908]: Flushing /proc/kmsg...
btrfs: dev add/delete/balance/replace/resize operation in progress- Hmmm. I think you needed to do
btrfs balance start -dusage=1 / &
first.
Are there some things you can delete off the root partition? - Yes there is.
I can do some cleaning, but I have to go to work now.
I will try this later this day and try the command again.
I will let you know. Thanks for now. - after some cleaning
root@nas-8B-24-BC:/# btrfs fi df /
Data, single: total=3.58GiB, used=1.65GiB
System, DUP: total=8.00MiB, used=4.00KiB
System, single: total=4.00MiB, used=0.00B
Metadata, DUP: total=204.69MiB, used=108.27MiB
btrfs balance start -dusage=1 / &
[1] 24714
root@nas-8B-24-BC:/# Done, had to relocate 1 out of 13 chunks
^C
[1]+ Done btrfs balance start -dusage=1 /
Response does not come back, so I press Ctrl+C or do I have to wait longer?
btrfs fi df /
Data, single: total=3.57GiB, used=1.65GiB
System, DUP: total=8.00MiB, used=4.00KiB
System, single: total=4.00MiB, used=0.00B
Metadata, DUP: total=204.69MiB, used=108.04MiB
Ok it made the metadata a little smaller - Looks like you should try freeing up some space then try it again or if you think it worked. Try e.g. -dusage=5 instead of -dusage=1. Gradually increase the number each run.
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