Solaris

Both filesystems are under the same zpool.

So removing or lowering the reservation on u01 filesystem will have that effect.
You will now see additional 200 GB of space, since you increased the quota on /data earlier.

Regards
Peasant.

Hello peasant,

Thanks brother for your reply, I need your support to reduce the reservation size of /u01 and increase the free space size of /data file system.

I have a one confusion, kindly clarify the confusion, last time I used the below zfs set quota command to increased the size of u01-data-pool/data

zfs set quota = 700g u01-data-pool/data

after above command the file system of /data are 700 gb from 600 gb and the free available space was 48 gb after that it is 82 gb.

So why the available space are not 148 gb , why it has increased 34 gb more to come 82 gb.

kindly advice us.

Regards,

Reading about zfs reservation and quotas could be a start of understanding those.

In your case a simple :

Code:

zfs set reservation=100GB u01-data-pool/u01

Will show 100 GB of additional space available for other datasets in zpool.

A zfs quota is effectively a soft limit to a dataset (filesystem).
It does not change the USED of entire zpool.

A zfs reservation is a hard limit to a dataset (filesystem).
It does change USED of entire zpool.

Hope that clear things out.
Regards
Peasant.

Hello peasant,

Thanks for your guide & I am very glad to inform that after used the below command.

zfs set reservation=100GB u01-data-pool/u01

the /data file system are extended and the free space are 141 gb, before it was 75 gb.

u01-data-pool/data 700G 559G 141G 80% /data

Again appreciate & thanks.

Now the same scenario has our production environment & we have not a more space

to store the db data.


$ zpool list prod-db-pool

NAME SIZE ALLOC FREE CAP HEALTH ALTROOT
prod-db-pool 848G 629G 219G 74% ONLINE -

after df -kh , the space for /data & /u01 are below, both are in same pool.

prod-db-pool/data 600G 576G 24G 97% /data

prod-db-pool/u01 200G 53G 147G 27% /u01

Now our important file system is /data and it has only 24GB remaining, kindly guide us

how to extend the free space of /data file system.

Regards,

I think i've done enough to help and guide you.
Using the knowledge you received from the posts on this subject, you should be able to reach similar conclusions/solutions independently.

This forum is meant to guide you, not to offer done solutions for every possible variation on given subject.

We are not your unpaid programming or engineering staff.

Regards
Peasant.

Hello Peasant,

Thanks for your reply & again appreciate for your guide & support.

I know that you are helping me to understand the actual issue, how to extend the file system as per our scenario.

Just need one more favour to fix the last issue , after that i will close the thread.

Again i have really appreciate your effort to help & solve the issue.

Regards,

---------- Post updated at 04:30 PM ---------- Previous update was at 08:59 AM ----------

Hello Peasant,

I am waiting for your feedback, kindly guide me to the last issue that i have faced.

Highly appreciated for your guide & support.

Regards,

@Shahzad53, I'm afraid you missed the point. You give the impression not to have make any effort to try to understand what was explained. You didn't even follow the multiple requests to use code tags in your postings.

I would suggest you to read again and understand what was taught, if unclear read the various resources about ZFS administration you'll find on the net, e.g. Oracle Solaris 10 ZFS Administration Guide or Managing ZFS File Systems in Oracle Solaris 11.4, build a test zpool and experiment with various settings.