Is there a requirement for the volume that contains an iSCSI LUN to have a minimum amount of free space. We seem to be getting warnings when it approaches 90% full. Is it a modifiable parameter?
Do you have a snap reserve set for it?
________________________________
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of David McWilliams Sent: Wednesday, November 28, 2007 8:54 AM To: NetApp list Subject: iSCSI question
Is there a requirement for the volume that contains an iSCSI LUN to have a minimum amount of free space. We seem to be getting warnings when it approaches 90% full. Is it a modifiable parameter?
If you're not using snapshots, you can fill the volume for 100%.
Operations manager will standard warn you for 'volume almost full' at 80% and 'volume full' at 90%. The filer will also warn you if the used space in the volume exceeds 97%. You can change this on a per-volume basis to be able to fill your volume completely without the filer constantly complaining about a warning condition.
Use the following commands to change this per volume:
filer> priv set advanced Warning: These advanced commands are potentially dangerous; use them only when directed to do so by Network Appliance personnel. filer*> registry set options.thresholds.volumename.fsFull 101 filer*> registry set options.thresholds.volumename.fsNearlyFull 101 filer*> priv set
Setting the threshold to 101% will make it possible to fill the volume to 100%.
Be warned that these are advanced commands and that you are changing the registry directly, so I can't be responsible for problems ;-)
Grtz, Tom
________________________________
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of David McWilliams Sent: woensdag 28 november 2007 14:54 To: NetApp list Subject: iSCSI question
Is there a requirement for the volume that contains an iSCSI LUN to have a minimum amount of free space. We seem to be getting warnings when it approaches 90% full. Is it a modifiable parameter?
This would be great for non-production volumes. But it's high recommended that these warning stay on for production. The on-call person will thank you in the morning.
James
________________________________
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of De Wit Tom (Consultant) Sent: Wednesday, November 28, 2007 6:43 AM To: David McWilliams; NetApp list Subject: RE: iSCSI question
If you're not using snapshots, you can fill the volume for 100%.
Operations manager will standard warn you for 'volume almost full' at 80% and 'volume full' at 90%. The filer will also warn you if the used space in the volume exceeds 97%. You can change this on a per-volume basis to be able to fill your volume completely without the filer constantly complaining about a warning condition.
Use the following commands to change this per volume:
filer> priv set advanced Warning: These advanced commands are potentially dangerous; use them only when directed to do so by Network Appliance personnel. filer*> registry set options.thresholds.volumename.fsFull 101 filer*> registry set options.thresholds.volumename.fsNearlyFull 101 filer*> priv set
Setting the threshold to 101% will make it possible to fill the volume to 100%.
Be warned that these are advanced commands and that you are changing the registry directly, so I can't be responsible for problems ;-)
Grtz,
Tom
________________________________
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of David McWilliams Sent: woensdag 28 november 2007 14:54 To: NetApp list Subject: iSCSI question
Is there a requirement for the volume that contains an iSCSI LUN to have a minimum amount of free space. We seem to be getting warnings when it approaches 90% full. Is it a modifiable parameter?
Yes, if the volume can fill up and stop production. When you place a lun with space reservation enabled in it and if you don't take snapshots of that lun, you can fill the volume untill the last block, as it will never grow.
What I do find to be a problem is that you can't easily see for which volumes you changed it (not from the GUI). You'll have use 'registry walk options.thresholds' to see all the values from the command line.
Grtz, Tom
________________________________
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of Johnson, James A [HDS] Sent: woensdag 28 november 2007 20:42 To: De Wit Tom (Consultant); David McWilliams; NetApp list Subject: RE: iSCSI question
This would be great for non-production volumes. But it's high recommended that these warning stay on for production. The on-call person will thank you in the morning.
James
________________________________
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of De Wit Tom (Consultant) Sent: Wednesday, November 28, 2007 6:43 AM To: David McWilliams; NetApp list Subject: RE: iSCSI question
If you're not using snapshots, you can fill the volume for 100%.
Operations manager will standard warn you for 'volume almost full' at 80% and 'volume full' at 90%. The filer will also warn you if the used space in the volume exceeds 97%. You can change this on a per-volume basis to be able to fill your volume completely without the filer constantly complaining about a warning condition.
Use the following commands to change this per volume:
filer> priv set advanced Warning: These advanced commands are potentially dangerous; use them only when directed to do so by Network Appliance personnel. filer*> registry set options.thresholds.volumename.fsFull 101 filer*> registry set options.thresholds.volumename.fsNearlyFull 101 filer*> priv set
Setting the threshold to 101% will make it possible to fill the volume to 100%.
Be warned that these are advanced commands and that you are changing the registry directly, so I can't be responsible for problems ;-)
Grtz,
Tom
________________________________
From: owner-toasters@mathworks.com [mailto:owner-toasters@mathworks.com] On Behalf Of David McWilliams Sent: woensdag 28 november 2007 14:54 To: NetApp list Subject: iSCSI question
Is there a requirement for the volume that contains an iSCSI LUN to have a minimum amount of free space. We seem to be getting warnings when it approaches 90% full. Is it a modifiable parameter?
-
David McWilliams -
De Wit Tom (Consultant) -
Johnson, James A [HDS] -
Page, Jeremy