On 3/20/18 9:49 AM, cgxu519@xxxxxxx wrote:
...
> No, not really. Assume if we have 100GB xfs filesystem(/mnt/test2) and we have
> 3 directories(pq1, pq2, pq3) inside the fs, each directory sets project quota.
> (size limit up to 10GB)
>
> When avail space of total filesystem is only left 3.2MB, but when running df for
> pg1,pg2,pg3 then avail space is 9.5GB, this is much more than real filesystem.
> What do you think?
>
> Detail output [1]. (without this fix patch)
>
> $ df -h /mnt/test2
> Filesystem Size Used Avail Use% Mounted on
> /dev/vdb2 100G 100G 3.2M 100% /mnt/test2
>
> $ df -h /mnt/test2/pq1
> Filesystem Size Used Avail Use% Mounted on
> /dev/vdb2 10G 570M 9.5G 6% /mnt/test2
>
> $ df -h /mnt/test2/pq2
> Filesystem Size Used Avail Use% Mounted on
> /dev/vdb2 10G 570M 9.5G 6% /mnt/test2
>
> $ df -h /mnt/test2/pq3
> Filesystem Size Used Avail Use% Mounted on
> /dev/vdb2 10G 570M 9.5G 6% /mnt/test2
I agree that this is a confusing result.
> Detail output [2]. (with this fix patch)
>
> $ df -h /mnt/test2
> Filesystem Size Used Avail Use% Mounted on
> /dev/vdb2 100G 100G 3.2M 100% /mnt/test2
>
> $ df -h /mnt/test2/pq1
> Filesystem Size Used Avail Use% Mounted on
> /dev/vdb2 574M 570M 3.2M 100% /mnt/test2
^ ^
| |
| +-- This makes sense
|
+-- This is a little bit odd
So you cap the available project space to host filesystem
available space, and also use that to compute the
total size of the "project" by adding used+available.
The slightly strange result is that "size" will shrink
as more filesystem space gets used, but I'm not
sure I have a better suggestion here... would the below
result be too confusing? It is truthful; the limit is 10G,
570M are used, and only 3.2M is currently available due to
the host filesystem freespace constraint:
$ df -h /mnt/test2/pq1
Filesystem Size Used Avail Use% Mounted on
/dev/vdb2 10G 570M 3.2M 100% /mnt/test2
-Eric
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