Red Hat, Inc., the world’s leading provider of open source solutions. 05 March, 2015 (Yesterday) announced the general availability of Red Hat Enterprise Linux 7.1, the first minor release of Red Hat Enterprise Linux 7, which Was launched in June 2014. RHEL 7.1 released with lot of new features. First time i’m going to REVIEW RHEL. I have spend morethan 4-5 hours and covered all the topics and i don’t know whether i covered fully or not. For more details of RHEL 7.1 release notes.
What’s new in Red Hat Enterprise Linux 7.1
Hardware supported, Latest/current 5th generation Intel processors (code name Broadwell)
The turbostattool (part of the kernel-tools package) has also been updated with support for the new processors.
microcode_ctl package has been updated from version 0x17 to version 0x1c (Intel Processor Microcode Updated to 0x1c)
Enabled support for AMD Hawaii GPU Support
Now, you can configure the Kdump kernel crash dumping mechanism during the installation. Previously, this was configured after the installation using the firstboot utility.
Manual partitioning screen has been redesigned and been added with few new features.
Several new Kickstart options has been added for bridge configuration.
The logvol command has a new option, –profile=. This option enables the user to specify the configuration profile name to use with thin logical volumes. If uses, the name will also be included in the metadata for the logical volume.
The behavior of the –size= and –percent= options of the logvol command has changed to –grow=
The –autoscreenshot option issue has been fixed in autostep Kickstart command. Now screenshot correctly saves into the /tmp/anaconda-screenshots directory. After the installation completes, these screenshots are moved into /root/anaconda-screenshots.
The liveimg command now supports installation from tar files as well as disk images. The tar archive must contain the installation media root file system, and the file name must end with .tar, .tbz, .tgz, .txz, .tar.bz2, .tar.gz, or .tar.xz.
Several new options have been added to the network command for configuring network bridges.
Several new features have been added to Kickstart for better container support.
Built-in Help added in the Graphical Installer for further details.
Installation media for IBM Power Systems now use the GRUB2 boot loader instead of yaboot.
Now, LVM cache is fully supported.
Storage Array Management with libStorageMgmt API fully supported.
Red Hat Enterprise Linux 7.1 includes code in the megaraid_sas driver to enable LSI Syncro CS high-availability direct-attached storage (HA-DAS) adapters.
DIF/DIX increased the size from 512-byte disk block to 520 bytes
Enabled Support of Btrfs File System.
The OverlayFS file system service allows the user to “overlay” one file system on top of another.
Added Support of Parallel NFS (RHEL team working closely with pNFS partners to provide full support for more layout types in the future)
New kernel module added libceph.ko & rbd.ko These RBD kernel modules allow a Linux host to see a Ceph block device (But rbd.ko module not yet supported).
Microcode level upgrades (MCL) are enabled in Red Hat Enterprise Linux 7.1 on the IBM System z architecture.
Red Hat Enterprise Linux 7.1 introduces kpatch, a dynamic “kernel patching utility”, which can be used to dynamically patch the kernel without rebooting. Note that kpatch is supported to run only on AMD64 and Intel 64 architectures.
Scheduler Load-Balancing Performance Improved
Process Stack Size Increased from 8KB to 16KB
Support for Large Crashkernel Sizes, maximum memory supported limit of 6TB.
Increased Maximum Number of vCPUs in KVM guest has been increased to 240.
USB 3.0 Support for KVM Guests
Several new features of the Hyper-V network driver have been introduced to improve network performance.
Introduces a number of new features in libguestfs for accessing and modifying virtual machine disk images
OProfile support added.
sosreport Replaces snap
Berkeley Packet Filter added
Improved Clock Stability
The libteam packages have been updated to version 1.15, in particular, teamd can now be automatically re-spawned by system, which increases overall reliability.
LinuxPTP (linuxptp package has been updated to version 1) timemaster Support for Failover between PTP and NTP.
NetworkManager has been updated to version 1.0
New Features in OpenSSH, The OpenSSH set of tools has been updated to version 6.6.1p1
The Libreswan implementation of IPsec VPN has been updated to version 3.12 , which adds several new features and improvements
Interoperability has been improved with OpenBSD, Cisco, and Android systems.
The GnuTLS implementation of the SSL, TLS, and DTLS protocols has been updated to version 3.3.8, which offers a number of new features and improvements
The Trusted Network Connect (TNC) Architecture, provided by the strongimcv package, has been updated and is now based on strongSwan 5.2.0. The following new features and improvements have been added to the TNC
The vmwgfx driver has been upgraded to version 126.96.36.199
All the packages has been updated to latest version.