Issue Description
The customer created a backup of the oracle database to the normal share file system via the NBU, sometimes later, the NBU report that the N8000 file system has written full or there is medium error. Through the command line we find the utilization ratio of the customer’s file system is only 20%.
Handling Process
1. Check if there has been configured the quota, login in the N8000 via the “support” user:
n8500_01:~ vxrepquota -v -u /vx/nbu
/dev/vx/dsk/sfsdg/nbu (/vx/nbu):
Block limits File limits
User used soft hard timeleft used soft hard timeleft
2. Forbid the quota:
vxquotaoff -v -g /vx/nbu
vxquotaoff -v -u /vx/nbu
Root Cause
When a certain versions of the N8000 are executing the normal sharing, the system will set a quota for the N8000 by default. For example, if the customer’s file system has 10T and the system set the quota as 2T, then the customer can’t write more data to the N8000 file system once he/she has already written 2T to the system.
Suggestions
For some versions of N8000, if the file system hasn’t been written full, but the system reports it has used completely, this case is a good reference.
