Re: df -h command

syedkhan · ‎2016-10-24

I wanted to see all the comumed of volumes in an aggregate

i ran df -h and saw the following

Filesystem total used availcapacity Mounted on
/vol/ExchMngrsDb7/ 1295GB 1252GB 43GB 97% /vol/ExchMngrsDb7/
/vol/ExchMngrsDb7/.snapshot 68GB 485GB 0GB 713% /vol/ExchMngrsDb7/.snapshot

What I dont Understand is the .snapshot

Total is 68GB

Used is 485 How ?

Availablecap is 0GB 713 % ??

can any one explain me this ?

GidonMarcus · ‎2016-10-24

it's precentage from the snap reserve

FASNOD01DV> snap reserve oracle_backups_export_01_02
Volume oracle_backups_export_01_02: current snapshot reserve is 1% or 107374180 k-bytes.

FASNOD01DV> df -h oracle_backups_export_01_02
Filesystem               total       used      avail capacity Mounted on
/vol/oracle_backups_export_01_02/    10137GB     2694GB     1407GB      86% /vol/oracle_backups_export_01_02/
/vol/oracle_backups_export_01_02/.snapshot      102GB      194GB        0GB     190% /vol/oracle_backups_export_01_02/.snapshot

FASNOD01DV> snap reserve oracle_backups_export_01_02 5

FASNOD01DV> df -h oracle_backups_export_01_02
Filesystem               total       used      avail capacity Mounted on
/vol/oracle_backups_export_01_02/     9728GB     2602GB     1407GB      86% /vol/oracle_backups_export_01_02/
/vol/oracle_backups_export_01_02/.snapshot      512GB      194GB      317GB      38% /vol/oracle_backups_export_01_02/.snapshot

Gidi

Gidi Marcus (Linkedin) - Storage and Microsoft technologies consultant - Hydro IT LTD - UK

syedkhan · ‎2016-10-24

Mine shows this

netappctrl1> snap reserve ExchangeMBLogs7
Volume ExchangeMBLogs7: current snapshot reserve is 10% or 125627792 k-bytes.

df -h ExchangeMBLogs7
Filesystem total used avail capacity Mounted on
/vol/ExchangeMBLogs7/ 1078GB 730GB 347GB 68% /vol/ExchangeMBLogs7/
/vol/ExchangeMBLogs7/.snapshot 119GB 401GB 0GB 335% /vol/ExchangeMBLogs7/.snapshot

I want to know how its calculating 335 % ?

GidonMarcus · ‎2016-10-24

Hi

The filer calculated 10% of your 1078GB as 119GB (or 125627792 k-bytes per the command output).
googles says that 335% of 119 is almost 400. – make sense for the snapshot you got I guess

i really don't see how this % figure as itself make any difference for you.
If you trying to save space – look on the snapshot themselves. if you have a deeper concern share it so we can help

Gidi

Gidi Marcus (Linkedin) - Storage and Microsoft technologies consultant - Hydro IT LTD - UK

syedkhan · ‎2016-10-24

I will share exactly what I need.

We have Snapmanager for exchange through which we take backups and retention is " Do not Delete and Backups" but still I see only last 10 days backups, with my knowledge I went to the volume and checked the snapshots.

There are 10 snapshots same as they are shown in the Snap Manager for Exchange which means if I increase more snapshot space I would see more backups in the snapmanager for exchange.

GidonMarcus · ‎2016-10-24

Hi

Snap reserve is not about how much you allow the snapshot to grow. it's about how much you allow the data to grow (and by that. reserving space for snapshots).

Two main things that might causes this:

A. snap autodelete (ther's a cmmnd as such follow by a vol name)

B. you have another job configured with less retention (like weekly one, or in another node in the DAG) that myabe deleted it. there was also a few SME bugs with the retention. but the first option i sueggested is very likelly to what you describe..

if that still not the solution. need to look on /etc/ems for what deletes it. if it's point to ZAPI look on the SME backup report to see if it's coming from there or not

Gidi

Gidi Marcus (Linkedin) - Storage and Microsoft technologies consultant - Hydro IT LTD - UK

syedkhan · ‎2016-10-24

I have 3 backups

Daily

Weekly and standard

Daily

"C:\Program Files\NetApp\SnapManager for Exchange\SMEJobLauncher.exe" new-backup -Server 'CIGEX7' -ManagementGroup 'Daily' -NoTruncateLogs $False -RetainBackups 8 -StorageGroup 'First Storage Group','Second Storage Group','Finance Storage','HR Storage','Accountant Group','Pharma Group','Sales Group' -Verify -VerificationServer 'cigex7' -UpdateMirror -UseMountPoint -MountPointDir 'C:\Program Files\NetApp\SnapManager for Exchange\SnapMgrMountPoint' -BackupCopyRemoteCCRNode $False.

It means keep last 8 backups

Weekly

"C:\Program Files\NetApp\SnapManager for Exchange\SMEJobLauncher.exe" new-backup -Server 'CIGEX7' -ManagementGroup 'Weekly' -NoTruncateLogs $False -RetainBackups 5 -StorageGroup 'First Storage Group','Second Storage Group','Finance Storage',''HR Storage','Accountant Group','Pharma Group','Sales Group' -Verify -VerificationServer 'cigex7' -UpdateMirror -UseMountPoint -MountPointDir 'C:\Program Files\NetApp\SnapManager for Exchange\SnapMgrMountPoint' -BackupCopyRemoteCCRNode $False

It means keep last 5 backups

Standard (Monthly)

"C:\Program Files\NetApp\SnapManager for Exchange\SMEJobLauncher.exe" new-backup -Server 'CIGEX7' -ManagementGroup 'Standard' -NoTruncateLogs $False -RetainBackups 13 -StorageGroup 'First Storage Group','Second Storage Group','Finance Storage','Accountant Group','Pharma Group','Sales Group' -Verify -VerificationServer 'cigex7' -UpdateMirror -UseMountPoint -MountPointDir 'C:\Program Files\NetApp\SnapManager for Exchange\SnapMgrMountPoint' -BackupCopyRemoteCCRNode $False

It means keep last 13 backups

What I am doing wrong here ??

Thanks once again for guiding me and helping out

GidonMarcus · ‎2016-10-24

Hi

Have you checked the “sanp autodelete ExchMngrsDb7” command?

by the look - these shouldn’t be clashing. And with this configuration if you only see 10 days back ,it’s likely being deleted by chronologic process rather a controlled process like SME.

Next place to look is EMS logs \\filer\etc$\log\ems to see what delete these.

Gidi

Gidi Marcus (Linkedin) - Storage and Microsoft technologies consultant - Hydro IT LTD - UK

syedkhan · ‎2016-10-25

here is what snap autodelete says

snapshot autodelete settings for ExchMngrsDb7:
state : off
commitment : try
trigger : volume
target_free_space : 20%
delete_order : oldest_first
defer_delete : user_created
prefix : (not specified)
destroy_list : none

EMS log doesnt shows much still I am attaching it for you in case if I am not able to see something which you can

GidonMarcus · ‎2016-10-25

Hi

i don't see the file. but try serching the volume name in. every snapshot delete should be there. (old EMS files are called EMS.0 / EMS.1 / EMS.2)

Gidi

Gidi Marcus (Linkedin) - Storage and Microsoft technologies consultant - Hydro IT LTD - UK

syedkhan · ‎2016-10-25

Please see the attached file in case you find any thing

https://ufile.io/1e213

GidonMarcus · ‎2016-10-25

Hi

in that specific file only the exchsnap__cigex7_10-14-2016_18.00.52__daily SME snapshoot deleted on 23Oct2016 06:50:58" (9 days after, your retention for daily is 😎

so looks good. you need to check the older files for the same. zapi_snapshot_delete means it's coming from an external API (like SME using)

Gidi Marcus (Linkedin) - Storage and Microsoft technologies consultant - Hydro IT LTD - UK

syedkhan · ‎2016-10-25

Great Great Great :). Hatts offff

1) How you came to know that its deleted (9 days after, your retention for daily is 😎

2) How Can I reserve the space ofr the snapshots ?

I am grateful the for the previous answer you replied and also I will mark this answered then I will open a new thread with a diff issue related with SME, I hope you will go through and satify me.

Again its a great pleasure and learning with talented people like and I wish we had great chaps like you on the forums to help people unconditionally.

Cheers...