Chapter 30. Deprecated Functionality in Red Hat Enterprise Linux 7

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Symbols from libraries linked as dependencies no longer resolved by ld

Previously, the ld linker resolved any symbols present in any linked library, even if some libraries were linked only implicitly as dependencies of other libraries. This allowed developers to use symbols from the implicitly linked libraries in application code and omit explicitly specifying these libraries for linking.
For security reasons, ld has been changed to not resolve references to symbols in libraries linked implicitly as dependencies.
As a result, linking with ld fails when application code attempts to use symbols from libraries not declared for linking and linked only implicitly as dependencies. To use symbols from libraries linked as dependencies, developers must explicitly link against these libraries as well.
To restore the previous behavior of ld, use the -copy-dt-needed-entries command-line option. (BZ#1292230)

Windows guest virtual machine support limited

As of Red Hat Enterprise Linux 7, Windows guest virtual machines are supported only under specific subscription programs, such as Advanced Mission Critical (AMC).

Deprecated Device Drivers

  • 3w-9xxx
  • 3w-sas
  • mptbase
  • mptctl
  • mptsas
  • mptscsih
  • mptspi
  • qla3xxx
  • The following controllers from the megaraid_sas driver have been deprecated:
    • Dell PERC5, PCI ID 0x15
    • SAS1078R, PCI ID 0x60
    • SAS1078DE, PCI ID 0x7C
    • SAS1064R, PCI ID 0x411
    • VERDE_ZCR, PCI ID 0x413
    • SAS1078GEN2, PCI ID 0x78
  • The following Ethernet adapter controlled by the be2net driver has been deprecated:
  • The following controllers from the be2iscsi driver have been deprecated:
    • Emulex OneConnect 10Gb iSCSI Initiator (generic), PCI ID 0x212
    • OCe10101, OCm10101, OCe10102, OCm10102 BE2 adapter family, PCI ID 0x702
    • OCe10100 BE2 adapter family, PCI ID 0x703
  • The following Emulex boards from the lpfc driver have been deprecated:
    BladeEngine 2 (BE2) Devices
    Fibre Channel (FC) Devices
    • FIREFLY, PCI ID 0x1ae5
    • PROTEUS_VF, PCI ID 0xe100
    • BALIUS, PCI ID 0xe131
    • PROTEUS_PF, PCI ID 0xe180
    • RFLY, PCI ID 0xf095
    • PFLY, PCI ID 0xf098
    • LP101, PCI ID 0xf0a1
    • TFLY, PCI ID 0xf0a5
    • BSMB, PCI ID 0xf0d1
    • BMID, PCI ID 0xf0d5
    • ZSMB, PCI ID 0xf0e1
    • ZMID, PCI ID 0xf0e5
    • NEPTUNE, PCI ID 0xf0f5
    • NEPTUNE_SCSP, PCI ID 0xf0f6
    • NEPTUNE_DCSP, PCI ID 0xf0f7
    • FALCON, PCI ID 0xf180
    • SUPERFLY, PCI ID 0xf700
    • DRAGONFLY, PCI ID 0xf800
    • CENTAUR, PCI ID 0xf900
    • PEGASUS, PCI ID 0xf980
    • THOR, PCI ID 0xfa00
    • VIPER, PCI ID 0xfb00
    • LP10000S, PCI ID 0xfc00
    • LP11000S, PCI ID 0xfc10
    • LPE11000S, PCI ID 0xfc20
    • PROTEUS_S, PCI ID 0xfc50
    • HELIOS, PCI ID 0xfd00
    • HELIOS_SCSP, PCI ID 0xfd11
    • HELIOS_DCSP, PCI ID 0xfd12
    • ZEPHYR, PCI ID 0xfe00
    • HORNET, PCI ID 0xfe05
    • ZEPHYR_SCSP, PCI ID 0xfe11
    • ZEPHYR_DCSP, PCI ID 0xfe12
To check the PCI IDs of the hardware on your system, run the lspci -nn command.
Note that other controllers from the mentioned drivers that are not listed here remain unchanged.

Containers using the libvirt-lxc tooling have been deprecated

The following libvirt-lxc packages are deprecated since Red Hat Enterprise Linux 7.1:
  • libvirt-daemon-driver-lxc
  • libvirt-daemon-lxc
  • libvirt-login-shell
Future development on the Linux containers framework is now based on the docker command-line interface. libvirt-lxc tooling may be removed in a future release of Red Hat Enterprise Linux (including Red Hat Enterprise Linux 7) and should not be relied upon for developing custom container management applications.
For more information, see the Red Hat KnowledgeBase article.
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