Chapter 8. Removed functionality

This chapter lists functionalities that were supported in RHEL 7 but are no longer available in RHEL 8.0.

8.1. Removed hardware support

This section lists device drivers and adapters that were supported in RHEL 7 but are no longer available in RHEL 8.0.

8.1.1. Removed device drivers

  • 3w-9xxx
  • 3w-sas
  • aic79xx
  • aoe
  • arcmsr
  • ata drivers:

    • acard-ahci
    • sata_mv
    • sata_nv
    • sata_promise
    • sata_qstor
    • sata_sil
    • sata_sil24
    • sata_sis
    • sata_svw
    • sata_sx4
    • sata_uli
    • sata_via
    • sata_vsc
  • bfa
  • cxgb3
  • cxgb3i
  • e1000
  • floppy
  • hptiop
  • initio
  • isci
  • iw_cxgb3
  • mptbase
  • mptctl
  • mptsas
  • mptscsih
  • mptspi
  • mtip32xx
  • mvsas
  • mvumi
  • OSD drivers:

    • osd
    • libosd
  • osst
  • pata drivers:

    • pata_acpi
    • pata_ali
    • pata_amd
    • pata_arasan_cf
    • pata_artop
    • pata_atiixp
    • pata_atp867x
    • pata_cmd64x
    • pata_cs5536
    • pata_hpt366
    • pata_hpt37x
    • pata_hpt3x2n
    • pata_hpt3x3
    • pata_it8213
    • pata_it821x
    • pata_jmicron
    • pata_marvell
    • pata_netcell
    • pata_ninja32
    • pata_oldpiix
    • pata_pdc2027x
    • pata_pdc202xx_old
    • pata_piccolo
    • pata_rdc
    • pata_sch
    • pata_serverworks
    • pata_sil680
    • pata_sis
    • pata_via
    • pdc_adma
  • pm80xx(pm8001)
  • pmcraid
  • qla3xxx
  • stex
  • sx8
  • tulip
  • ufshcd
  • wireless drivers:

    • carl9170
    • iwl4965
    • iwl3945
    • mwl8k
    • rt73usb
    • rt61pci
    • rtl8187
    • wil6210

8.1.2. Removed adapters

  • The following adapters from the aacraid driver have been removed:

    • PERC 2/Si (Iguana/PERC2Si), PCI ID 0x1028:0x0001
    • PERC 3/Di (Opal/PERC3Di), PCI ID 0x1028:0x0002
    • PERC 3/Si (SlimFast/PERC3Si), PCI ID 0x1028:0x0003
    • PERC 3/Di (Iguana FlipChip/PERC3DiF), PCI ID 0x1028:0x0004
    • PERC 3/Di (Viper/PERC3DiV), PCI ID 0x1028:0x0002
    • PERC 3/Di (Lexus/PERC3DiL), PCI ID 0x1028:0x0002
    • PERC 3/Di (Jaguar/PERC3DiJ), PCI ID 0x1028:0x000a
    • PERC 3/Di (Dagger/PERC3DiD), PCI ID 0x1028:0x000a
    • PERC 3/Di (Boxster/PERC3DiB), PCI ID 0x1028:0x000a
    • catapult, PCI ID 0x9005:0x0283
    • tomcat, PCI ID 0x9005:0x0284
    • Adaptec 2120S (Crusader), PCI ID 0x9005:0x0285
    • Adaptec 2200S (Vulcan), PCI ID 0x9005:0x0285
    • Adaptec 2200S (Vulcan-2m), PCI ID 0x9005:0x0285
    • Legend S220 (Legend Crusader), PCI ID 0x9005:0x0285
    • Legend S230 (Legend Vulcan), PCI ID 0x9005:0x0285
    • Adaptec 3230S (Harrier), PCI ID 0x9005:0x0285
    • Adaptec 3240S (Tornado), PCI ID 0x9005:0x0285
    • ASR-2020ZCR SCSI PCI-X ZCR (Skyhawk), PCI ID 0x9005:0x0285
    • ASR-2025ZCR SCSI SO-DIMM PCI-X ZCR (Terminator), PCI ID 0x9005:0x0285
    • ASR-2230S + ASR-2230SLP PCI-X (Lancer), PCI ID 0x9005:0x0286
    • ASR-2130S (Lancer), PCI ID 0x9005:0x0286
    • AAR-2820SA (Intruder), PCI ID 0x9005:0x0286
    • AAR-2620SA (Intruder), PCI ID 0x9005:0x0286
    • AAR-2420SA (Intruder), PCI ID 0x9005:0x0286
    • ICP9024RO (Lancer), PCI ID 0x9005:0x0286
    • ICP9014RO (Lancer), PCI ID 0x9005:0x0286
    • ICP9047MA (Lancer), PCI ID 0x9005:0x0286
    • ICP9087MA (Lancer), PCI ID 0x9005:0x0286
    • ICP5445AU (Hurricane44), PCI ID 0x9005:0x0286
    • ICP9085LI (Marauder-X), PCI ID 0x9005:0x0285
    • ICP5085BR (Marauder-E), PCI ID 0x9005:0x0285
    • ICP9067MA (Intruder-6), PCI ID 0x9005:0x0286
    • Themisto Jupiter Platform, PCI ID 0x9005:0x0287
    • Themisto Jupiter Platform, PCI ID 0x9005:0x0200
    • Callisto Jupiter Platform, PCI ID 0x9005:0x0286
    • ASR-2020SA SATA PCI-X ZCR (Skyhawk), PCI ID 0x9005:0x0285
    • ASR-2025SA SATA SO-DIMM PCI-X ZCR (Terminator), PCI ID 0x9005:0x0285
    • AAR-2410SA PCI SATA 4ch (Jaguar II), PCI ID 0x9005:0x0285
    • CERC SATA RAID 2 PCI SATA 6ch (DellCorsair), PCI ID 0x9005:0x0285
    • AAR-2810SA PCI SATA 8ch (Corsair-8), PCI ID 0x9005:0x0285
    • AAR-21610SA PCI SATA 16ch (Corsair-16), PCI ID 0x9005:0x0285
    • ESD SO-DIMM PCI-X SATA ZCR (Prowler), PCI ID 0x9005:0x0285
    • AAR-2610SA PCI SATA 6ch, PCI ID 0x9005:0x0285
    • ASR-2240S (SabreExpress), PCI ID 0x9005:0x0285
    • ASR-4005, PCI ID 0x9005:0x0285
    • IBM 8i (AvonPark), PCI ID 0x9005:0x0285
    • IBM 8i (AvonPark Lite), PCI ID 0x9005:0x0285
    • IBM 8k/8k-l8 (Aurora), PCI ID 0x9005:0x0286
    • IBM 8k/8k-l4 (Aurora Lite), PCI ID 0x9005:0x0286
    • ASR-4000 (BlackBird), PCI ID 0x9005:0x0285
    • ASR-4800SAS (Marauder-X), PCI ID 0x9005:0x0285
    • ASR-4805SAS (Marauder-E), PCI ID 0x9005:0x0285
    • ASR-3800 (Hurricane44), PCI ID 0x9005:0x0286
    • Perc 320/DC, PCI ID 0x9005:0x0285
    • Adaptec 5400S (Mustang), PCI ID 0x1011:0x0046
    • Adaptec 5400S (Mustang), PCI ID 0x1011:0x0046
    • Dell PERC2/QC, PCI ID 0x1011:0x0046
    • HP NetRAID-4M, PCI ID 0x1011:0x0046
    • Dell Catchall, PCI ID 0x9005:0x0285
    • Legend Catchall, PCI ID 0x9005:0x0285
    • Adaptec Catch All, PCI ID 0x9005:0x0285
    • Adaptec Rocket Catch All, PCI ID 0x9005:0x0286
    • Adaptec NEMER/ARK Catch All, PCI ID 0x9005:0x0288
  • The following adapters from the mpt2sas driver have been removed:

    • SAS2004, PCI ID 0x1000:0x0070
    • SAS2008, PCI ID 0x1000:0x0072
    • SAS2108_1, PCI ID 0x1000:0x0074
    • SAS2108_2, PCI ID 0x1000:0x0076
    • SAS2108_3, PCI ID 0x1000:0x0077
    • SAS2116_1, PCI ID 0x1000:0x0064
    • SAS2116_2, PCI ID 0x1000:0x0065
    • SSS6200, PCI ID 0x1000:0x007E
  • The following adapters from the megaraid_sas driver have been removed:

    • Dell PERC5, PCI ID 0x1028:0x15
    • SAS1078R, PCI ID 0x1000:0x60
    • SAS1078DE, PCI ID 0x1000:0x7C
    • SAS1064R, PCI ID 0x1000:0x411
    • VERDE_ZCR, PCI ID 0x1000:0x413
    • SAS1078GEN2, PCI ID 0x1000:0x78
    • SAS0079GEN2, PCI ID 0x1000:0x79
    • SAS0073SKINNY, PCI ID 0x1000:0x73
    • SAS0071SKINNY, PCI ID 0x1000:0x71
  • The following adapters from the qla2xxx driver have been removed:

    • ISP24xx, PCI ID 0x1077:0x2422
    • ISP24xx, PCI ID 0x1077:0x2432
    • ISP2422, PCI ID 0x1077:0x5422
    • QLE220, PCI ID 0x1077:0x5432
    • QLE81xx, PCI ID 0x1077:0x8001
    • QLE10000, PCI ID 0x1077:0xF000
    • QLE84xx, PCI ID 0x1077:0x8044
    • QLE8000, PCI ID 0x1077:0x8432
    • QLE82xx, PCI ID 0x1077:0x8021
  • The following adapters from the qla4xxx driver have been removed:

    • QLOGIC_ISP8022, PCI ID 0x1077:0x8022
    • QLOGIC_ISP8324, PCI ID 0x1077:0x8032
    • QLOGIC_ISP8042, PCI ID 0x1077:0x8042
  • The following adapters from the be2iscsi driver have been removed:

    • BladeEngine 2 (BE2) devices

      • BladeEngine2 10Gb iSCSI Initiator (generic), PCI ID 0x19a2:0x212
      • OneConnect OCe10101, OCm10101, OCe10102, OCm10102 BE2 adapter family, PCI ID 0x19a2:0x702
      • OCe10100 BE2 adapter family, PCI ID 0x19a2:0x703
    • BladeEngine 3 (BE3) devices

      • OneConnect TOMCAT iSCSI, PCI ID 0x19a2:0x0712
      • BladeEngine3 iSCSI, PCI ID 0x19a2:0x0222
  • The following Ethernet adapters controlled by the be2net driver have been removed:

    • BladeEngine 2 (BE2) devices

      • OneConnect TIGERSHARK NIC, PCI ID 0x19a2:0700
      • BladeEngine2 Network Adapter, PCI ID 0x19a2:0211
    • BladeEngine 3 (BE3) devices

      • OneConnect TOMCAT NIC, PCI ID 0x19a2:0x0710
      • BladeEngine3 Network Adapter, PCI ID 0x19a2:0221
  • The following adapters from the lpfc driver have been removed:

    • BladeEngine 2 (BE2) devices

      • OneConnect TIGERSHARK FCoE, PCI ID 0x19a2:0x0704
    • BladeEngine 3 (BE3) devices

      • OneConnect TOMCAT FCoE, PCI ID 0x19a2:0x0714
    • Fibre Channel (FC) devices

      • FIREFLY, PCI ID 0x10df:0x1ae5
      • PROTEUS_VF, PCI ID 0x10df:0xe100
      • BALIUS, PCI ID 0x10df:0xe131
      • PROTEUS_PF, PCI ID 0x10df:0xe180
      • RFLY, PCI ID 0x10df:0xf095
      • PFLY, PCI ID 0x10df:0xf098
      • LP101, PCI ID 0x10df:0xf0a1
      • TFLY, PCI ID 0x10df:0xf0a5
      • BSMB, PCI ID 0x10df:0xf0d1
      • BMID, PCI ID 0x10df:0xf0d5
      • ZSMB, PCI ID 0x10df:0xf0e1
      • ZMID, PCI ID 0x10df:0xf0e5
      • NEPTUNE, PCI ID 0x10df:0xf0f5
      • NEPTUNE_SCSP, PCI ID 0x10df:0xf0f6
      • NEPTUNE_DCSP, PCI ID 0x10df:0xf0f7
      • FALCON, PCI ID 0x10df:0xf180
      • SUPERFLY, PCI ID 0x10df:0xf700
      • DRAGONFLY, PCI ID 0x10df:0xf800
      • CENTAUR, PCI ID 0x10df:0xf900
      • PEGASUS, PCI ID 0x10df:0xf980
      • THOR, PCI ID 0x10df:0xfa00
      • VIPER, PCI ID 0x10df:0xfb00
      • LP10000S, PCI ID 0x10df:0xfc00
      • LP11000S, PCI ID 0x10df:0xfc10
      • LPE11000S, PCI ID 0x10df:0xfc20
      • PROTEUS_S, PCI ID 0x10df:0xfc50
      • HELIOS, PCI ID 0x10df:0xfd00
      • HELIOS_SCSP, PCI ID 0x10df:0xfd11
      • HELIOS_DCSP, PCI ID 0x10df:0xfd12
      • ZEPHYR, PCI ID 0x10df:0xfe00
      • HORNET, PCI ID 0x10df:0xfe05
      • ZEPHYR_SCSP, PCI ID 0x10df:0xfe11
      • ZEPHYR_DCSP, PCI ID 0x10df:0xfe12
    • Lancer FCoE CNA devices

      • OCe15104-FM, PCI ID 0x10df:0xe260
      • OCe15102-FM, PCI ID 0x10df:0xe260
      • OCm15108-F-P, PCI ID 0x10df:0xe260

To check the PCI IDs of the hardware on your system, run the lspci -nn command.

Note that other adapters from the mentioned drivers that are not listed here remain unchanged.

8.1.3. FCoE software removal

Fibre Channel over Ethernet (FCoE) software has been removed from Red Hat Enterprise Linux 8. Specifically, the fcoe.ko kernel module is no longer available for creating software FCoE interfaces over Ethernet adapters and drivers. This change is due to a lack of industry adoption for software-managed FCoE.

Specific changes to Red Hat Enterprise 8 include:

  • The fcoe.ko kernel module is no longer available. This removes support for software FCoE with Data Center Bridging enabled Ethernet adapters and drivers.
  • Link-level software configuration via Data Center Bridging eXchange (DCBX) using lldpad is no longer supported for FCoE.

    • The fcoe-utils tools (specifically fcoemon) is configured by default to not validate DCB configuration or communicate with lldpad.
    • The lldpad integration in fcoemon might be permanently disabled.
  • The libhbaapi and libhbalinux libraries are no longer used by fcoe-utils, and will not undergo any direct testing from Red Hat.

Support for the following remains unchanged:

  • Currently supported offloading FCoE adapters that appear as Fibre Channel adapters to the operating system and do not use the fcoe-utils management tools, unless stated in a separate note. This applies to select adapters supported by the lpfc and qla2xxx FCoE drivers. Note that the bfa driver is not included in Red Hat Enterprise Linux 8.
  • Currently supported offloading FCoE adapters that do use the fcoe-utils management tools but have their own kernel drivers instead of fcoe.ko and manage DCBX configuration in their drivers and/or firmware, unless stated in a separate note. The fnic, bnx2fc, and qedf drivers will continue to be fully supported in Red Hat Enterprise Linux 8.
  • The libfc.ko and libfcoe.ko kernel modules that are required for some of the supported drivers covered by the previous statement.

8.2. Other removed functionality

8.2.1. Installer and image creation

Installer support for Btrfs has been removed in RHEL 8

The Btrfs file system is not supported in Red Hat Enterprise Linux 8. As a result, the Anaconda installer Graphical User Interface (GUI) and the Kickstart commands no longer support Btrfs.

(BZ#1533904)

8.2.2. Infrastructure services

The ntp package has been removed

Red Hat Enterprise Linux 7 supported two implementations of the NTP protocol: ntp and chrony. In Red Hat Enterpise Linux 8, only chrony is available.

Migration from ntp to chrony is documented in Migrating to chrony.

Possible replacements for previous ntp features that are not supported by chrony are documented in Achieving some settings previously supported by ntp in chrony.

(JIRA:RHELPLAN-1842)

KDE unsupported in RHEL 8

With Red Hat Enterprise Linux 8, all packages related to KDE Plasma Workspaces (KDE) have been removed, and it is no longer possible to use KDE as an alternative to the default GNOME desktop environment.

Red Hat does not support migration from RHEL 7 with KDE to RHEL 8 GNOME. Users of RHEL 7 with KDE are recommended to back up their data and install RHEL 8 with GNOME.

(BZ#1581496)

8.2.3. Hardware enablement

The e1000 network driver is not supported in RHEL 8

In Red Hat Enterprise Linux 8, the e1000 network driver is not supported. This affects both bare metal and virtual environments. However, the newer e1000e network driver continues to be fully supported in RHEL 8.

(BZ#1596240)

RHEL 8 does not support the tulip driver

With this update, the tulip network driver is no longer supported. As a consequence, when using RHEL 8 on a Generation 1 virtual machine (VM) on the Microsoft Hyper-V hypervisor, the "Legacy Network Adapter" device does not work, which causes PXE installation of such VMs to fail.

For the PXE installation to work, install RHEL 8 on a Generation 2 Hyper-V VM. If you require a RHEL 8 Generation 1 VM, use ISO installation.

(BZ#1534870)

8.2.4. Identity Management

NSS databases not supported in OpenLDAP

The OpenLDAP suite in previous versions of Red Hat Enterprise Linux (RHEL) used the Mozilla Network Security Services (NSS) for cryptographic purposes. With RHEL 8, OpenSSL, which is supported by the OpenLDAP community, replaces NSS. OpenSSL does not support NSS databases for storing certificates and keys. However, it still supports privacy enhanced mail (PEM) files that serve the same purpose.

(BZ#1570056)

sssd-secrets has been removed

The sssd-secrets component of the System Security Services Daemon (SSSD) has been removed in Red Hat Enterprise Linux 8. This is because Custodia, a secrets service provider, is no longer actively developed. Use other Identity Management tools to store secrets, for example the Identity Management Vault.

(JIRA:RHELPLAN-10441)

Selected Python Kerberos packages have been replaced

In Red Hat Enterprise Linux (RHEL) 8, the python-gssapi package, python-requests-gssapi module, and urllib-gssapi library have replaced Python Kerberos packages such as python-krbV, python-kerberos, python-requests-kerberos, and python-urllib2_kerberos. Notable benefits include:

  • python-gssapi is easier to use than python-kerberos and python-krbV
  • python-gssapi supports both python 2 and python 3 whereas python-krbV does not
  • the GSSAPI-based packages allow the use of other Generic Security Services API (GSSAPI) mechanisms in addition to Kerberos, such as the NT LAN Manager NTLM for backward compatibility reasons

This update improves the maintainability and debuggability of GSSAPI in RHEL 8.

(JIRA:RHELPLAN-10444)

8.2.5. Compilers and development tools

librtkaio removed

With this update, the librtkaio library has been removed. This library provided high performance real time asynchronous I/O access for some files, which was based on Linux kernel Asynchronous I/O support (KAIO).

As a result of the removal:

  • Applications using the LD_PRELOAD method to load librtkaio display a warning about a missing library, load the librt library instead and run correctly.
  • Applications using the LD_LIBRARY_PATH method to load librtkaio load the librt library instead and run correctly, without any warning.
  • Applications using the dlopen() system call to access librtkaio directly load the librt library instead.

Users of librtkaio have the following options:

  • Use the fallback mechanism described above, without any changes to their applications.
  • Change code of their applications to use the librt library, which offers a compatible POSIX-compliant API.
  • Change code of their applications to use the libaio library, which offers a compatible API.

Both librt and libaio can provide comparable features and performance under specific conditions.

Note that the libaio package has Red Hat compatibility level of 2, while librtk and the removed librtkaio level 1.

For more details, see https://fedoraproject.org/wiki/Changes/GLIBC223_librtkaio_removal

(BZ#1512006)

Valgrind library for MPI debugging support removed

The libmpiwrap.so wrapper library for Valgrind provided by the valgrind-openmpi package has been removed. This library enabled Valgrind to debug programs using the Message Passing Interface (MPI). This library was specific to the Open MPI implementation version in previous versions of Red Hat Enterprise Linux.

Users of libmpiwrap.so are encouraged to build their own version from upstream sources specific to their MPI implementation and version. Supply these custom-built libraries to Valgrind using the LD_PRELOAD technique.

(BZ#1500481)

Development headers and static libraries removed from valgrind-devel

Previously, the valgrind-devel sub-package used to include development files for developing custom valgrind tools. This update removes these files because they do not have a guaranteed API, have to be linked statically, and are unsupported. The valgrind-devel package still does contain the development files for valgrind-aware programs and header files such as valgrind.h, callgrind.h, drd.h, helgrind.h, and memcheck.h, which are stable and well supported.

(BZ#1538009)

The nosegneg libraries for 32-bit Xen have been removed

Previously, the glibc i686 packages contained an alternative glibc build, which avoided the use of the thread descriptor segment register with negative offsets (nosegneg). This alternative build was only used in the 32-bit version of the Xen Project hypervisor without hardware virtualization support, as an optimization to reduce the cost of full paravirtualization. These alternative builds are no longer used and they have been removed.

(BZ#1514839)

GCC no longer builds Ada, Go, and Objective C/C++ code

Capability for building code in the Ada (GNAT), GCC Go, and Objective C/C++ languages has been removed from the GCC compiler.

To build Go code, use the Go Toolset instead.

(BZ#1650618)

make new operator != causes a different interpretation of certain existing makefile syntax

The != shell assignment operator has been added to GNU make as an alternative to the $(shell …​) function to increase compatibility with BSD makefiles. As a consequence, variables with name ending in exclamation mark and immediately followed by assignment such as variable!=value are now interpreted as the shell assignment. To restore the previous behavior, add a space after the exclamation mark, such as variable! =value.

For more details and differences between the operator and the function, see the GNU make manual.

(BZ#1650675)

8.2.6. File systems and storage

Btrfs has been removed

The Btrfs file system has been removed in Red Hat Enterprise Linux 8. This includes the following components:

  • The btrfs.ko kernel module
  • The btrfs-progs package
  • The snapper package

You can no longer create or mount Btrfs file systems in Red Hat Enterprise Linux 8.

(BZ#1582530)

The /etc/sysconfig/nfs file and legacy NFS service names are no longer available

In Red Hat Enterprise Linux 8.0, the NFS configuration has moved from the /etc/sysconfig/nfs configuration file, which was used in Red Hat Enterprise Linux 7, to /etc/nfs.conf.

The /etc/nfs.conf file uses a different syntax. Red Hat Enterprise Linux 8 attempts to automatically convert all options from /etc/sysconfig/nfs to /etc/nfs.conf when upgrading from Red Hat Enterprise Linux 7.

Both configuration files are supported in Red Hat Enterprise Linux 7. Red Hat recommends that you use the new /etc/nfs.conf file to make NFS configuration in all versions of Red Hat Enterprise Linux compatible with automated configuration systems.

Additionally, the following NFS service aliases have been removed and replaced by their upstream names:

  • nfs.service, replaced by nfs-server.service
  • nfs-secure.service, replaced by rpc-gssd.service
  • rpcgssd.service, replaced by rpc-gssd.service
  • nfs-idmap.service, replaced by nfs-idmapd.service
  • rpcidmapd.service, replaced by nfs-idmapd.service
  • nfs-lock.service, replaced by rpc-statd.service
  • nfslock.service, replaced by rpc-statd.service

(BZ#1639432)

VDO no longer supports read cache

The read cache functionality has been removed from Virtual Data Optimizer (VDO). The read cache is always disabled on VDO volumes, and you can no longer enable it using the --readCache option of the vdo utility.

Red Hat might reintroduce the VDO read cache in a later Red Hat Enterprise Linux release, using a different implementation.

(BZ#1639512)

Removal of clvmd for managing shared storage devices

LVM no longer uses clvmd (cluster lvm daemon) for managing shared storage devices. Instead, LVM now uses lvmlockd (lvm lock daemon). For details about using lvmlockd, see the lvmlockd(8) man page. For details about using shared storage in general, see the lvmsystemid(7) man page. For information on using LVM in a Pacemaker cluster, see the help screen for the LVM-activate resource agent.

(BZ#1643543)

Removal of lvmetad daemon

LVM no longer uses the lvmetad daemon for caching metadata, and will always read metadata from disk. LVM disk reading has been reduced, which reduces the benefits of caching.

Previously, autoactivation of logical volumes was indirectly tied to the use_lvmetad setting in the lvm.conf configuration file. The correct way to disable autoactivation continues to be setting auto_activation_volume_list=[] (an empty list) in the lvm.conf file.

(BZ#1643545)

LVM can no longer manage devices formatted with the GFS pool volume manager or the lvm1 metadata format.

LVM can no longer manage devices formatted with the GFS pool volume manager or the`lvm1` metadata format. Volume groups using the lvm1 format should be converted to the lvm2 format using the vgconvert command on Red Hat Enterprise Linux 7 or earlier.

(BZ#1643547)

LVM libraries and LVM Python bindings have been removed

The lvm2app library and LVM Python bindings, which were provided by the lvm2-python-libs package, have been removed. Red Hat recommends the following solutions instead:

  • The LVM D-Bus API in combination with the lvm2-dbusd service. This requires using Python version 3.
  • The LVM command-line utilities with JSON formatting; this formatting has been available since the lvm2 package version 2.02.158.
  • The libblockdev library, included in AppStream, for C/C++

You must port any applications using the removed libraries and bindings to the D-Bus API before upgrading to Red Hat Enterprise Linux 8.

(BZ#1643549)

The ability to mirror the log for LVM mirrors has been removed

The mirrored log feature of mirrored LVM volumes has been removed. Red Hat Enterprise Linux (RHEL) 8 no longer supports creating or activating LVM volumes with a mirrored mirror log.

The recommended replacements are:

  • RAID1 LVM volumes. The main advantage of RAID1 volumes is their ability to work even in degraded mode and to recover after a transient failure.
  • Disk mirror log. To convert a mirrored mirror log to disk mirror log, use the following command: lvconvert --mirrorlog disk my_vg/my_lv.

(BZ#1643562)

The dmraid package has been removed

The`dmraid` package has been removed from Red Hat Enterprise Linux 8. Users requiring support for combined hardware and software RAID host bus adapters (HBA) should use the mdadm utility, which supports native MD software RAID, the SNIA RAID Common Disk Data Format (DDF), and the Intel® Matrix Storage Manager (IMSM) formats.

(BZ#1643576)

8.2.7. Networking

The -ok option of the tc command removed

The -ok option of the tc command has been removed in Red Hat Enterprise Linux 8. As a workaround, users can implement code to communicate directly via netlink with the kernel. Response messages received, indicate completion and status of sent requests. An alternative way for less time-critical applications is to call tc for each command separately. This may happen with a custom script which simulates the tc -batch behavior by printing OK for each successful tc invocation.

(BZ#1640991)

8.2.8. Security

OpenSCAP API consolidated

This update provides OpenSCAP shared library API that has been consolidated. 63 symbols have been removed, 14 added, and 4 have an updated signature. The removed symbols in OpenSCAP 1.3.0 include:

  • symbols that were marked as deprecated in version 1.2.0
  • SEAP protocol symbols
  • internal helper functions
  • unused library symbols
  • unimplemented symbols

(BZ#1618464)

8.2.9. Virtualization

IVSHMEM has been disabled

The inter-VM shared memory device (IVSHMEM) feature, which provides shared memory between multiple virtual machines, is now disabled in Red Hat Enterprise Linux 8. A virtual machine configured with this device will fail to boot. Similarly, attempting to hot-plug such a device device will fail as well.

(BZ#1621817)