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Frequently Asked Questions

E4. Why do I get NFS timeouts when I mount a Linux NFS server from my Solaris NFS client?

Linux NFS faq
You get NFS timeouts because you are using soft mounts. Normally, mounts are hard, which requires the client to continue attempts to reach the server forever. A soft mount allows the client to stop trying an operation after a period of time. A soft timeout may cause silent data corruption if it occurs during data or metadata transmissions, so you should only use soft mounts in the cases where client responsiveness is more important than data integrity.

B8. Why won't my client let me use rsize or wsize larger than 8KB when I mount my Linux NFS server?

Linux NFS faq
NFS Version 2 supports up to 8KB reads and writes. NFS Version 3 allows larger reads and writes (see question A1). Stock 2.4 kernels earlier than 2.4.20 do not support read or write operations larger than 8192 bytes for either NFS Version 2 or 3. Server-side TCP support, introduced as an experimental compile-time option in 2.4.20, increases the server's maximum I/O size to 32KB by increasing the value of NFSSVC_MAXBLKSIZE (see question B2).

Why can I not NFS-mount from a Linux box?

Networking
Some versions of the Linux NFS code only accept mount requests from a privileged port; try # mount -o -P linuxbox:/blah /mnt

C4. I believe the Linux NFS server will not export a fat32 partition. Is that correct?

Linux NFS faq
The FAT file systems can be exported, starting with the early 2.4 kernels, but if used extensively, it may cause grief. First, only those operations supported by the exported file system will be honoured. Operations such as "chown", "link", and "symlink" are not supported by these file systems, and will fail. Read/write/create etc., should be fine, as long as the files remain relatively unchanged.

C6. Which local file systems can I export with the Linux NFS server?

Linux NFS faq
We expect the following local file systems to work, as they are tested often: ext2, ext3, jfs, reiserfs, xfs. These local file systems may work or may have a few minor-ish issues: iso9660, ntfs, reiser4, udf. Ask on the NFS mailing list for details. Any file system based on FAT or not having the ability to provide permanent inode numbers will have trouble with NFS versions 2 and 3 (see question C4).

Can I mount Solaris ZFS filesystems on Linux or Mac?

Interoperability with Other Operating Systems (Solaris x86 F...
ZFS is Zettabyte Filesystem, a modern, flexible, integral filesystem described at http://www.opensolaris.org/os/community/zfs/ Experimental, unsupported, read-only support for Linux is available from Ricardo Correia, a berliOS developer, at http://zfs-on-fuse.blogspot.com/ as a user-space filesystem. ZFS filesystem support will be on Mac OS X 10.5 "Leopard."

C1. How are exported file systems and client mount points tracked on the server?

Linux NFS faq
etc/exports contains information about how file systems should normally be exported. This is only read by exportfs. var/lib/nfs/etab contains information about what filesystems should be exported to whom at the moment. var/lib/nfs/rmtab contains a list of which filesystems actually are mounted by certain clients at the moment. proc/fs/nfs/exports contains information about what filesystems are exported to actual client (individual, not subnet or whatever) at the moment.

How can I increase client side timeouts?

Globus Toolkit RLS FAQ
If for any reason you need to increase the client timeouts, use the -t <timeout value> option. You may use this option with the globus-rls-cli and globus-rls-admin clients.

How do you set up a dedicated server on Linux, or on Solaris?

The q2server FAQ Rev 1.11
Create a subdirectory under that directory, named 'baseq2'. Under baseq2, create another subdirectory named 'players'. And under players, create two subdirectories, named 'male' and 'female'. In the CD's /install/data/baseq2/players/male/ directory, copy every file found there to your quake2/baseq2/players/male/ directory. Copy every file from the CD's /install/data/baseq2/players/female/ directory to your /baseq2/players/female/ directory. For Linux, v3.14's filename is quake2-3.

Why can I not NFS-mount from a Sun box?

Networking
Sun workstations running SunOS 4.X only accept mount requests from a privileged port; try # mount -o -P sunbox:/blah /mnt The most frequent problem is not understanding the correct format of /etc/exports. Please review exports(5) and the NFS entry in the Handbook, especially the section on configuring NFS.

Can I make a CD across an NFS mount?

TAMS CDR FAQ
Yes, but there is no guarantee it will always work. There are no restrictions in the software which limit where the source data is located. However, CD-R requires a continuous stream of data as it is writing, and a busy network could interfere with performance. Also remember, the greater the recording speed the greater the sustained data transfer rate the drive requires. It is easy to test using a Dummy Write. Slow down the write speed and increase the buffer size.

Why can I not NFS-mount from a Linux® box?

Networking
Some versions of the Linux NFS code only accept mount requests from a privileged port; try # mount -o -P linuxbox:/blah /mnt

Will the CUantivirus (eTrust) client protect Solaris or Linux email servers?

CUantivirus Frequently Asked Questions | ITS
The CUantivirus client does not interface with sendmail (the common UNIX mail transfer agent). Computer Associates does provide a linux gateway product which will interface with sendmail but is not supported by ITS at this time.

Is there a Linux client?

Little Networks FAQ
Yes, there is. You can download it here. Instructions for installing the client are here. The Little Networks file sync server name is ifolder.littlenetworks.net

Can I record typing on a Linux or Solaris computer?

Record Keystrokes on USB Keyboard with 60x20mm Device. FAQ (...
Yes, as long as the Windows computer uses a USB keyboard. The device is compatible with any USB keyboard.

Can I run job agents on multiple machines: Solaris, Linux, Windows 2003 Server?

Open Source Job Scheduler FAQs
job configurations can be loaded from disk files or from a central database which facilitates job deployment in a mixed environment.

How to mount new partitions in linux?

Fedora For Newbies
one can mount new partitions temporary or permanently, as root make a new directory, for example we want to mount the D drive with fat32 file system first do: write the files system if they are nfts, ext2 or ext3.

How do I mount a .ISO image in linux?

Filesoup FAQ - powered by phpMyFAQ 1.6.8
How do I mount a .ISO image in linux? Written by English_Man. Last Updated 20/03/2004. I dont know about you, but I always like to browse ...

C7. Why should I disable subtree checking on my NFS server exports?

Linux NFS faq
When an NFS server exports a subdirectory of a local file system, but leaves the rest unexported, the NFS server must check whether each NFS request is against a file residing in the area that is exported. This check is called the subtree check. To perform this check, the server includes information about the parent directory of each file in NFS file handles that are handed out to NFS clients.
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