개요
저는 Debian Buster에서 Xen 서버를 실행하고 있습니다. 최신 커널, 최신 BIOS 버전, 기존 부팅.
Xen 서버로 부팅하면 사용 가능한 RAM이 8GB만 표시되고 연결된 RAM은 16GB가 인식됩니다.
Xen 없이 Debian으로 부팅하면 16GB의 RAM이 모두 사용 가능한 것으로 표시됩니다.
내 질문:Xen이 16GB 전체를 사용하도록 하려면 어떻게 해야 하는지 아시나요?
xl dmesg예를 들어, 일부 불일치로 인해 64비트 주소 지정 대신 32비트 주소 지정을 사용할 때 오류가 나타날 수 있습니다. ACPI가 64비트를 사용하도록 강제할 수 있나요?
통나무
젠에서
Xen으로 부팅하면 ACPI: 32/64X FACS address mismatch in FADT - da7ed080/0000000000000000, using 32사용 가능한 16GB RAM 중 8GB만 표시되고 사용됩니다.
user@server:~/ free -m
free -m
total used free shared buff/cache available
Mem: 7387 379 6635 9 373 6841
Swap: 16291 0 16291
user@server:~/ dmidecode -t17
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.
Handle 0x0041, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM3
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1600 MT/s
Manufacturer: Samsung
Serial Number: 03B0650F7097
Asset Tag: 02151000
Part Number: M378B5173QH0-CK0
Rank: 1
Configured Memory Speed: 1333 MT/s
Handle 0x0043, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM1
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MT/s
Manufacturer: Kingston
Serial Number: 05009D00801C
Asset Tag: 07194900
Part Number: 99U5402-034.A00LF
Rank: 1
Configured Memory Speed: 1333 MT/s
Handle 0x0045, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM4
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1600 MT/s
Manufacturer: Samsung
Serial Number: 0330650F7097
Asset Tag: 02151000
Part Number: M378B5173QH0-CK0
Rank: 1
Configured Memory Speed: 1333 MT/s
Handle 0x0047, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM2
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MT/s
Manufacturer: Kingston
Serial Number: 0500A4008015
Asset Tag: 07194900
Part Number: 99U5402-034.A00LF
Rank: 1
Configured Memory Speed: 1333 MT/s
user@server:~/ xl dmesg
(XEN) parameter "placeholder" unknown!
(XEN) Xen version 4.11.4-pre (Debian 4.11.3+24-g14b62ab3e5-1~deb10u1) ([email protected]) (gcc (Debian 8.3.0-6) 8.3.0) debug=n Wed Jan 8 20:16:51 UTC 2020
(XEN) Bootloader: GRUB 2.02+dfsg1-20
(XEN) Command line: placeholder
(XEN) Xen image load base address: 0xdb000000
(XEN) Video information:
(XEN) VGA is text mode 80x25, font 8x16
(XEN) VBE/DDC methods: V2; EDID transfer time: 1 seconds
(XEN) Disc information:
(XEN) Found 1 MBR signatures
(XEN) Found 3 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN) 0000000000000000 - 000000000009d800 (usable)
(XEN) 000000000009d800 - 00000000000a0000 (reserved)
(XEN) 00000000000e0000 - 0000000000100000 (reserved)
(XEN) 0000000000100000 - 00000000d0ad5000 (usable)
(XEN) 00000000d0ad5000 - 00000000d0adc000 (ACPI NVS)
(XEN) 00000000d0adc000 - 00000000d0f18000 (usable)
(XEN) 00000000d0f18000 - 00000000d13af000 (reserved)
(XEN) 00000000d13af000 - 00000000d7eeb000 (usable)
(XEN) 00000000d7eeb000 - 00000000d8000000 (reserved)
(XEN) 00000000d8000000 - 00000000d8760000 (usable)
(XEN) 00000000d8760000 - 00000000d8800000 (reserved)
(XEN) 00000000d8800000 - 00000000d8fae000 (usable)
(XEN) 00000000d8fae000 - 00000000d9000000 (ACPI data)
(XEN) 00000000d9000000 - 00000000da71c000 (usable)
(XEN) 00000000da71c000 - 00000000da800000 (ACPI NVS)
(XEN) 00000000da800000 - 00000000dbe11000 (usable)
(XEN) 00000000dbe11000 - 00000000dc000000 (reserved)
(XEN) 00000000dd000000 - 00000000df200000 (reserved)
(XEN) 00000000f8000000 - 00000000fc000000 (reserved)
(XEN) 00000000fec00000 - 00000000fec01000 (reserved)
(XEN) 00000000fed00000 - 00000000fed04000 (reserved)
(XEN) 00000000fed1c000 - 00000000fed20000 (reserved)
(XEN) 00000000fee00000 - 00000000fee01000 (reserved)
(XEN) 00000000ff000000 - 0000000100000000 (reserved)
(XEN) 0000000100000000 - 000000041ee00000 (usable)
(XEN) ACPI: RSDP 000F0490, 0024 (r2 DELL )
(XEN) ACPI: XSDT D8FED098, 00AC (r1 DELL CBX3 1072009 AMI 10013)
(XEN) ACPI: FACP D8FF8B50, 010C (r5 DELL CBX3 1072009 AMI 10013)
(XEN) ACPI: DSDT D8FED1D0, B97E (r2 DELL CBX3 14 INTL 20091112)
(XEN) ACPI: FACS DA7ED080, 0040
(XEN) ACPI: APIC D8FF8C60, 0092 (r3 DELL CBX3 1072009 AMI 10013)
(XEN) ACPI: FPDT D8FF8CF8, 0044 (r1 DELL CBX3 1072009 AMI 10013)
(XEN) ACPI: SLIC D8FF8D40, 0176 (r3 DELL CBX3 1072009 MSFT 10013)
(XEN) ACPI: LPIT D8FF8EB8, 005C (r1 DELL CBX3 0 AMI. 5)
(XEN) ACPI: SSDT D8FF8F18, 0539 (r1 PmRef Cpu0Ist 3000 INTL 20120711)
(XEN) ACPI: SSDT D8FF9458, 0AD8 (r1 PmRef CpuPm 3000 INTL 20120711)
(XEN) ACPI: SSDT D8FF9F30, 01C7 (r1 PmRef LakeTiny 3000 INTL 20120711)
(XEN) ACPI: HPET D8FFA0F8, 0038 (r1 DELL CBX3 1072009 AMI. 5)
(XEN) ACPI: SSDT D8FFA130, 036D (r1 SataRe SataTabl 1000 INTL 20120711)
(XEN) ACPI: MCFG D8FFA4A0, 003C (r1 DELL CBX3 1072009 MSFT 97)
(XEN) ACPI: SSDT D8FFA4E0, 34D6 (r1 SaSsdt SaSsdt 3000 INTL 20091112)
(XEN) ACPI: ASF! D8FFD9B8, 00A5 (r32 INTEL HCG 1 TFSM F4240)
(XEN) ACPI: SSDT D8FFDA60, 0587 (r1 AMITCG PROC 1 INTL 20120711)
(XEN) ACPI: MSDM D8FFDFE8, 0055 (r3 DELL CBX3 6222004 AMI 10013)
(XEN) ACPI: DMAR D8FFE040, 00B8 (r1 INTEL HSW 1 INTL 1)
(XEN) ACPI: TCPA D8FFE0F8, 0032 (r2 APTIO4 NAPAASF 1 MSFT 1000013)
(XEN) System RAM: 16292MB (16683156kB)
(XEN) Domain heap initialised
(XEN) ACPI: 32/64X FACS address mismatch in FADT - da7ed080/0000000000000000, using 32
(XEN) IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
(XEN) Enabling APIC mode: Flat. Using 1 I/O APICs
(XEN) Switched to APIC driver x2apic_cluster
(XEN) xstate: size: 0x340 and states: 0x7
user@server:~/ xl info
host : server
release : 4.19.0-8-amd64
version : #1 SMP Debian 4.19.98-1 (2020-01-26)
machine : x86_64
nr_cpus : 8
max_cpu_id : 7
nr_nodes : 1
cores_per_socket : 4
threads_per_core : 2
cpu_mhz : 3591.702
hw_caps : bfebfbff:77faf3ff:2c100800:00000021:00000001:000027ab:00000000:00000100
virt_caps : hvm hvm_directio
total_memory : 16292
free_memory : 8278
sharing_freed_memory : 0
sharing_used_memory : 0
outstanding_claims : 0
free_cpus : 0
xen_major : 4
xen_minor : 11
xen_extra : .4-pre
xen_version : 4.11.4-pre
xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler : credit
xen_pagesize : 4096
platform_params : virt_start=0xffff800000000000
xen_changeset :
xen_commandline : placeholder
cc_compiler : gcc (Debian 8.3.0-6) 8.3.0
cc_compile_by : pkg-xen-devel
cc_compile_domain : lists.alioth.debian.org
cc_compile_date : Wed Jan 8 20:16:51 UTC 2020
build_id : b6822aa1d8f867753b92985e5cb0e806e520a08c
xend_config_format : 4
Debian Buster에서(Xen 제외)
Xen 없이 Debian Buster로 부팅하면 전체 16GB가 생성되며 모든 것이 정상입니다.
user@server:~/ free -m
total used free shared buff/cache available
Mem: 15950 388 15310 8 251 15292
Swap: 16291 0 16291
user@server:~/ dmidecode -t17
# dmidecode 3.2
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.
Handle 0x0041, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM3
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1600 MT/s
Manufacturer: Samsung
Serial Number: 03B0650F7097
Asset Tag: 02151000
Part Number: M378B5173QH0-CK0
Rank: 1
Configured Memory Speed: 1333 MT/s
Handle 0x0043, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM1
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MT/s
Manufacturer: Kingston
Serial Number: 05009D00801C
Asset Tag: 07194900
Part Number: 99U5402-034.A00LF
Rank: 1
Configured Memory Speed: 1333 MT/s
Handle 0x0045, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM4
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1600 MT/s
Manufacturer: Samsung
Serial Number: 0330650F7097
Asset Tag: 02151000
Part Number: M378B5173QH0-CK0
Rank: 1
Configured Memory Speed: 1333 MT/s
Handle 0x0047, DMI type 17, 34 bytes
Memory Device
Array Handle: 0x0040
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 4096 MB
Form Factor: DIMM
Set: None
Locator: DIMM2
Bank Locator: Not Specified
Type: DDR3
Type Detail: Synchronous
Speed: 1333 MT/s
Manufacturer: Kingston
Serial Number: 0500A4008015
Asset Tag: 07194900
Part Number: 99U5402-034.A00LF
Rank: 1
Configured Memory Speed: 1333 MT/s
답변1
total_memory : 16292
free_memory : 8278
Xen 의 출력은 xl infoXen이 사용 가능한 모든 메모리를 사용하고 있지만 예상한 방식과는 다르다는 것을 보여줍니다. 즉, 16GiB가 모두 표시되지만 8GiB보다 조금 더 할당되지 않은 상태로 남아 있습니다. 따라서 dom0에는 8GiB 미만의 메모리가 표시되고 나머지는 domU에서 사용할 수 있습니다.
dom0에 더 많은 메모리를 할당하려면 다음이 필요합니다.부트로더 구성 편집.
(32/64X 오류 메시지는 시스템이 32비트 주소 지정으로 전환된다는 의미는 아닙니다. 이는 ACPI 테이블에 주소 불일치가 있고 커널이 유효한 주소(여기서는 32비트 주소)를 사용하고 있음을 의미합니다. 이는 특정 ACPI 테이블을 찾는 방법에만 영향을 미칩니다.