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Comment: update info about tar and e2fsprogs

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e2fsprogs is a set of utilities for maintaining ext2, ext3 and ext4 filesystems. Patches are available to enable e2fsprogs to work with Lustre filesystems on RHEL6.

Getting e2fsprogs

Lustre servers using ldiskfs require a customized the Lustre-specific version of e2fsprogs to create and check filesystems.check ldiskfs filesystems because of features that have not yet landed into the upstream e2fsprogs.   The filefrag utility included in the Lustre e2fsprogs is also useful on the client to report file block allocations for striped files (the standard filefrag utility can work with 1-stripe files).

Getting e2fsprogs

We recommend using the latest binary, pre-built RPMs from the Whamcloud download site.

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NOTE RHEL 6.{0,1,2} package a version of of tar includes xattr patches necessary to record striping. However, depending on your use case, you may wish to use the Whamcloud build on RHEL 6.{0,1,2}.

Info
titletar from RHEL 6.3

Since the The release of RHEL 6.3 , the version of tar provided by Redhat includes both the xattrs patch includes tar version tar 1.26, which has support for backup and restore of xattrs and sparse files optimization. Using the RHEL 6.3 or later version of of tar alleviates the needs for the lustre Lustre-specific version available below.

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Lustre-iokit is a suite of tools for benchmarking Lustre systems, from the underlying disks, to the OST filesystem, the network, through to the client.

Getting lustre-iokit

The source for Lustre-iokit is available from the Whamcloud download site.Lustre-iokit rpm for Lustre 2.2.0 is available at Lustre 2.2.0 download