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Red Hat Enterprise Linux 7 7.0 Release Notes

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Red Hat Enterprise Linux 7 7.0 Release Notes Red Hat Enterprise Linux 7 7.0 Release Notes Release Notes for Red Hat Enterprise Linux 7 Red Hat Engineering Content Services Red Hat Enterprise Linux 7 7.0 Release Notes Release Notes for Red Hat Enterprise Linux 7 Red Hat Engineering Content Services Legal Notice Copyright © 2014 Red Hat, Inc. This document is licensed by Red Hat under the Creative Commons Attribution-ShareAlike 3.0 Unported License. If you distribute this document, or a modified version of it, you must provide attribution to Red Hat, Inc. and provide a link to the original. If the document is modified, all Red Hat trademarks must be removed. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, JBoss, MetaMatrix, Fedora, the Infinity Logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. Linux ® is the registered trademark of Linus Torvalds in the United States and other countries. Java ® is a registered trademark of Oracle and/or its affiliates. XFS ® is a trademark of Silicon Graphics International Corp. or its subsidiaries in the United States and/or other countries. MySQL ® is a registered trademark of MySQL AB in the United States, the European Union and other countries. Node.js ® is an official trademark of Joyent. Red Hat Software Collections is not formally related to or endorsed by the official Joyent Node.js open source or commercial project. The OpenStack ® Word Mark and OpenStack Logo are either registered trademarks/service marks or trademarks/service marks of the OpenStack Foundation, in the United States and other countries and are used with the OpenStack Foundation's permission. We are not affiliated with, endorsed or sponsored by the OpenStack Foundation, or the OpenStack community. All other trademarks are the property of their respective owners. Abstract The Release Notes documents the major features and enhancements implemented in Red Hat Enterprise Linux 7 and the known issues in this 7.0 release. For detailed information regarding the changes between Red Hat Enterprise Linux 6 and 7, consult the Migration Planning Guide. Acknowledgements Red Hat Global Support Services would like to recognize Sterling Alexander and Michael Everette for their outstanding contributions in testing Red Hat Enterprise Linux 7. Table of Contents Table of Contents .I n. t.r .o .d .u . c. t.i o. n. 4. ⁠.P .a .r .t .I .. N. .e .w . .F .e .a . t.u .r .e .s . 5. ⁠.C .h . a. p. t. e. r. 1. .A .r .c .h .i t.e . c. t.u .r .e .s . 6. ⁠.C .h . a. p. t. e. r. 2. .I n. s. t.a . l.l a. t.i o. .n . a. n. d. B. o. .o .t i.n . g. 7. ⁠2.1. Installer 7 ⁠2.2. Boot Loader 10 ⁠.C .h . a. p. t. e. r. 3. .. S. .t o. .r a. g. .e . 1. 1. ⁠LIO kernel Target Subsystem 11 ⁠LVM Cache 11 ⁠Storage Array Management with libStorageMgmt API 11 ⁠Support for LSI Syncro 11 ⁠LVM Application Programming Interface 11 ⁠DIF/DIX Support 11 ⁠Support of Parallel NFS 12 ⁠.C .h . a. p. t. e. r. 4. .. .F .i l.e . S. .y .s .t e. .m . s. 1. 3. ⁠Support of XFS File System 13 ⁠Support of Btrfs File System 13 ⁠Fast Block Devices Caching Slower Block Devices 13 ⁠.C .h . a. p. t. e. r. 5. .K .e .r .n .e .l . 1. 4. ⁠Dynamic kernel Patching 14 ⁠Support for Large crashkernel Sizes 14 ⁠Crashkernel With More Than 1 CPU 14 ⁠Swap Memory Compression 14 ⁠NUMA-Aware Scheduling and Memory Allocation 14 ⁠APIC Virtualization 14 ⁠vmcp Built in the Kernel 14 ⁠Hardware Error Reporting Mechanism 14 ⁠Full DynTick Support 15 ⁠Blacklisting kernel Modules 15 ⁠dm-era Target 15 ⁠AMD Microcode and AMD Opteron Support 15 ⁠Available Memory for /proc/meminfo 15 ⁠Open vSwitch Kernel Module 16 ⁠5.1. IBM System z Features and Technology Previews 16 ⁠.C .h . a. p. t. e. r. 6. .V .i r.t .u .a .l i.z .a . t.i o. n. 1. 8. ⁠6.1. Kernel-Based Virtualization 18 ⁠6.2. Xen 22 ⁠6.3. Hyper-V 22 ⁠6.4. VMware 22 ⁠.C .h . a. p. t. e. r. 7. .L .i n. u. x. .C . o. n. .t a. i.n . e. r.s . w. .i t. h. .D . o. c. k. e. r. .F .o .r .m . a. t. 2. 3. ⁠7.1. Components of Docker Containers 23 ⁠7.2. Advantages of Using Docker 24 ⁠7.3. Comparison with Virtual Machines 24 ⁠7.4. Using Docker on Red Hat Enterprise Linux 7 24 ⁠.C .h . a. p. t. e. r. 8. .S .y .s .t .e .m . .a .n .d . .S .e .r .v .i c. e. s. 2. 6. ⁠systemd 26 ⁠.C .h . a. p. t. e. r. 9. .C .l u. .s .t e. r. i.n .g . 2. 7. ..
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