Moosefs 3 0 Users Manual
User Manual:
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Page Count: 90
- About MooseFS
- Moose File System Requirements
- Installing MooseFS 3.0
- Configuring DNS Server
- Adding repositories
- Differences in package names between MooseFS Pro and MooseFS
- MooseFS Master Server(s) installation
- MooseFS CGI Monitor, CGI Server and Command Line Interface installation
- Chunk servers installation
- MooseFS Clients installation
- Enabling MooseFS services during OS boot
- Basic MooseFS use
- Stopping MooseFS
- Storage Classes
- Introduction to Storage Classes functionality in MooseFS 3.0
- How to use Storage Classes?
- Machines configuration
- Example of MooseFS installation without Storage Classes
- Labelling Chunkservers
- Creating Storage Classes
- Listing Storage Classes
- Assigning Storage Class to files / directories
- Creation, keep, archive labels
- Chunkserver states
- Chunk creation modes
- Preferred labels during read/write (in mfsmount)
- Storage Classes tools
- Common use scenarios
- Troubleshooting
- MooseFS Tools
- MooseFS Configuration Files
- Frequently Asked Questions
- What average write/read speeds can we expect?
- Does the goal setting influence writing/reading speeds?
- Are concurrent read and write operations supported?
- How much CPU/RAM resources are used?
- Is it possible to add/remove chunkservers and disks on the fly?
- How to mark a disk for removal?
- My experience with clustered filesystems is that metadata operations are quite slow. How did you resolve this problem?
- What does value of directory size mean on MooseFS? It is different than standard Linux ls -l output. Why?
- When I perform df -h on a filesystem the results are different from what I would expect taking into account actual sizes of written files.
- Can I keep source code on MooseFS? Why do small files occupy more space than I would have expected?
- Do Chunkservers and Metadata Server do their own checksumming?
- What resources are required for the Master Server?
- When I delete files or directories, the MooseFS free space size doesn't change. Why?
- When I added a third server as an extra chunkserver, it looked like the system started replicating data to the 3rd server even though the file goal was still set to 2.
- Is MooseFS 64bit compatible?
- Can I modify the chunk size?
- How do I know if a file has been successfully written to MooseFS?
- What are limits in MooseFS (e.g. file size limit, filesystem size limit, max number of files, that can be stored on the filesystem)?
- Can I set up HTTP basic authentication for the mfscgiserv?
- Can I run a mail server application on MooseFS? Mail server is a very busy application with a large number of small files – will I not lose any files?
- Are there any suggestions for the network, MTU or bandwidth?
- Does MooseFS support supplementary groups?
- Does MooseFS support file locking?
- Is it possible to assign IP addresses to chunk servers via DHCP?
- Some of my chunkservers utilize 90% of space while others only 10%. Why does the rebalancing process take so long?
- I have a Metalogger running – should I make additional backup of the metadata file on the Master Server?
- I think one of my disks is slower / damaged. How should I find it?
- How can I find the master server PID?
- Web interface shows there are some copies of chunks with goal 0. What does it mean?
- Is every error message reported by mfsmount a serious problem?
- How do I verify that the MooseFS cluster is online? What happens with mfsmount when the master server goes down?