i have facing the issue now like.
DB query failed: SQLSTATE[HY000]: General error: 1 Can't create/write to file '/var/tmp/#sql_381_0.MAI' (Errcode: 28), query was: DESCRIBE `sessions`
that's why Magento 1.x admin panel and frontend not working.
admin panel not logged in.
My site is inaccessible. please give me some suggestions on this issue.
or should I need to concern with the hosting provider for this?
The problem can be connected with inodes. Maybe you have too many small files and your inodes are full. You can check inode status with df -i.Sometimes when this error happens with temp tables:#126 - Incorrect key file for table '/tmp/#sql_64d_0.MYI'; try to repair itOr it can be connected with /tmp folder. Please see this answer.