Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
I need to setup a production Single-Primary HA configuration in Active/Passive that serves NFS, Samba and FTP. I want to use a non clustered file system such as ext3. I am new to DRBD and I am trying to read as much information as I can get on the net and forums. I could find information on NFS and very few on Samba and FTP. Can failover be achieved reliably for Samba and FTP using the above said configuration? Also I have basic questions for which I could not find clear answers in my search. I need this forum’s expertise and help to find answers to determine if they can be achieved using DRDB and the right configuration. The basic questions are: a. After failover, can the client session information be maintained for NFS, Samba and FTP? Is this required for seamless failover? The client session information I am curious are TCP connection, any session information stored in file (which DRBD will handle) and any other session information I have missed. What will happen to any session information maintained in memory? b. After failover, what will happen to the information stored in the cache maintained by ext3 file system, NFS and Samba on the server that failed? c. After failover, can the file handle be maintained for NFS and Samba? Is there such a thing for FTP? d. After failover, can the file lock and byte range lock be maintained for NFS and Samba? e. Is there any changes that need to be done on the client side to achieve this? Such as timeout, retry, etc? Help on this is much appreciated. Regards James