3PAR 8400 - Failed CPG (Growth)

[sandreef125]

Hi everyone,

I have a CPG that has failed:


Update CPG
Oct 30, 2023 1:54:48 PM AEST Failed
CPG aubnesan01_ssd_r6 SD and/or user space could not grow due to unavailability of free space. CPG grow attempted using degraded availability parameters (-ha mag) also failed.
Oct 30, 2023 1:39:42 PM AEST
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General
System AUBNESAN01
Serial number 2M2641084W
Type CPG growth failure non-admin
ID 279
Message code 0x027001d
Origin System
Component
Detected by node 0
Component CPG 2(aubnesan01_ssd_r6)
Spare Part Number
Frequency
Repeat count 2
Last time Oct 30, 2023 1:39:42 PM AEST
First time Oct 29, 2023 2:07:43 AM AEST

Currently in terms of SSDs we have 23 drives (1 has failed):

Allocated 135,135 GiB
Failed 7,152 GiB
Free 29,361 GiB
Total 171,648 GiB

CPG configuration is currently an R6 sized as a 10+2 configuration:

General

Name aubnesan01_ssd_r6
System AUBNESAN01
Domain —
Dedup version —
Volumes 1 virtual volume
Snapshots 0
VMware vVols —
RAID RAID 6
AO configuration
—
Device type SSD

Health

State Failed
State description Copy Space Grow Failed
Capacity Summary
100%
Private base
Private base 51,968 GiB
Private snap 1 GiB
Shared 0 GiB
Free 0 GiB
Total 51,969 GiB
Growth limit
—
Estimated free usable CPG capacity
—

Capacity Efficiency
1.3:1
Compaction
1.3:1
Overprovisioning
Compaction 1.3:1
Data reduction —
Compression —
Deduplication —

Last refreshed —

Do I have any options here in regards to adjusting the CPG to utilize the free space that I have?

(Apologies for the vague post, I am still in the process of coming up to speed here)

Cheers,

[MammaGutt]

CPG will grow as needed. Looks to me that the CPG is trying to grow but there is no available system wide free space for it to grab. In other words, seems like the system is full.

[sandreef125]

I currently have the following raw capacity available:

SSD
Total 171,648 GiB
Allocated 135,183 GiB
Free 36,465 GiB

Would it have anything to do with the single failed drive and set allocation etc?

Cheers,

[MammaGutt]

With set size 10+2 you need 12 drives behind a node pair with free space to create space.


Look at showpd -c to see how many drives have free capacity.

[sandreef125]

Thanks for the assistance, the failed drive was preventing any tunning from taking place. once this was replaced and admitted into the array we were good to go.

[Richard Siemers]

Currently in terms of SSDs we have 23 drives (1 has failed):

With set size 10+2 you need 12 drives behind a node pair with free space to create space.

There is a customer advisory that describes this behavior, you will need to login with your HPE passport to read it.

https://support.hpe.com/hpesc/docDispla ... 45368en_us

I am guessing that you don't have and HPE active support contract? Let me know if your HPE passport can open that link.