Hello all,

To manage the capacity in DRP's, we ran rmvdisk for a set of mirrored compressed vdisks with copies in 2 DRPs.
The status of the vdisks is now deleting (for a few days now).
How can we track or monitor the progress of this rmvdisk?
Can we make a certain calculation?
We have no idea how long this will last or what's already done.

Thanks

------------------------------
T Masteen
------------------------------

Hi T Masteen,

as of today there is no user-facing progress indicator for vdisk deletions in DRPs.
Also, the duration of the deletion process depends on various factors.
That said, deleting thin-provisioned vdisks in DRPs should happen fairly quick, while for instance deleting deduplicated vdisks takes considerably longer, as all deduplicated data chunks referenced by other volumes need to be "rehomed".

In case you need to get an idea of the current deletion progress, you can raise a ticket with support and provide a snap/4.
Support staff can determine the deletion progress status by means of the livedumps contained in the snap.

Best regards,

------------------------------
Christian Schroeder
IBM SpecV Storage Support with Passion
------------------------------

Hello Christian,

Thanks for answer.

We did find a way to follow the deletion process.
If we keep track of the used_capacity_before_reduction, we see the numbers get smaller over time

IBM_2145:>svqueryclock
Wed Jul 28 10:01:21 CEST 2021
IBM_2145:>lsvdisk 466 | grep capacity_bef
used_capacity_before_reduction 64.63GB

IBM_2145:>svqueryclock
Wed Jul 28 10:33:22 CEST 2021
IBM_2145:>lsvdisk 466 | grep capacity_bef
used_capacity_before_reduction 33.84GB

We also noticed that first copy-0 is processed and when this was done the process started with copy-1

Greetings,

------------------------------
T Masteen
------------------------------

Original Message:
Sent: Wed July 28, 2021 02:54 AM
From: Christian Schroeder
Subject: DRP Capacity monitoring

Hi T Masteen,

as of today there is no user-facing progress indicator for vdisk deletions in DRPs.
Also, the duration of the deletion process depends on various factors.
That said, deleting thin-provisioned vdisks in DRPs should happen fairly quick, while for instance deleting deduplicated vdisks takes considerably longer, as all deduplicated data chunks referenced by other volumes need to be "rehomed".

In case you need to get an idea of the current deletion progress, you can raise a ticket with support and provide a snap/4.
Support staff can determine the deletion progress status by means of the livedumps contained in the snap.

Best regards,

------------------------------
Christian Schroeder
IBM SpecV Storage Support with Passion
------------------------------

Hi,

thanks for sharing this - indeed a viable workaround.
You might want to have a look at a related RFE raised by another client for this very matter.

Best Regards!

------------------------------
Christian Schroeder
IBM SpecV Storage Support with Passion
------------------------------

Original Message:
Sent: Wed July 28, 2021 08:42 AM
From: T Masteen
Subject: DRP Capacity monitoring

Hello Christian,

Thanks for answer.

We did find a way to follow the deletion process.
If we keep track of the used_capacity_before_reduction, we see the numbers get smaller over time

IBM_2145:>svqueryclock
Wed Jul 28 10:01:21 CEST 2021
IBM_2145:>lsvdisk 466 | grep capacity_bef
used_capacity_before_reduction 64.63GB

IBM_2145:>svqueryclock
Wed Jul 28 10:33:22 CEST 2021
IBM_2145:>lsvdisk 466 | grep capacity_bef
used_capacity_before_reduction 33.84GB

We also noticed that first copy-0 is processed and when this was done the process started with copy-1

Greetings,

------------------------------
T Masteen
------------------------------


Original Message:
Sent: Wed July 28, 2021 02:54 AM
From: Christian Schroeder
Subject: DRP Capacity monitoring

Hi T Masteen,

as of today there is no user-facing progress indicator for vdisk deletions in DRPs.
Also, the duration of the deletion process depends on various factors.
That said, deleting thin-provisioned vdisks in DRPs should happen fairly quick, while for instance deleting deduplicated vdisks takes considerably longer, as all deduplicated data chunks referenced by other volumes need to be "rehomed".

In case you need to get an idea of the current deletion progress, you can raise a ticket with support and provide a snap/4.
Support staff can determine the deletion progress status by means of the livedumps contained in the snap.

Best regards,

------------------------------
Christian Schroeder
IBM SpecV Storage Support with Passion