IBM x3550 M4 机器装 xenserver7.2 奇怪的问题

[webjin1]

装了 4 块硬盘
1 块 500G 固态，2 块 500G HDD，1 块 2T HDD，
BIOS 里面只认到了 500G 固态和 2T HDD 还有 2 块 500G HDD 认不出，然后装的系统是 xen7.2
重启到了登陆进去马上 执行 fdisk -l 是可以看到 4 块硬盘大小，再隔 20 秒在执行一次 fdisk -l 就很卡，
单独查看每块硬盘 有 2 块识别不到 ，那 2 块 500G 的硬盘外接到其他的机器是可以看到的。
=======================================================
[root@localhost ~]# fdisk -l /dev/sda
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

Disk /dev/sda: 500.1 GB, 500107862016 bytes, 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt


# Start End Size Type Name
1 46139392 83888127 18G Microsoft basic
2 8390656 46139391 18G Microsoft basic
3 87033856 976773134 424.3G Linux LVM
4 83888128 84936703 512M BIOS boot parti
5 2048 8390655 4G Microsoft basic
6 84936704 87033855 1G Linux swap
[root@localhost ~]# fdisk -l /dev/sdb

Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes, 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes

[root@localhost ~]# fdisk -l /dev/sdc
fdisk: cannot open /dev/sdc: No such device or address
[root@localhost ~]# fdisk -l /dev/sdd
fdisk: cannot open /dev/sdd: No such device or address
[root@localhost ~]#
=================================================
[root@localhost ~]# cat /proc/partitions
major minor #blocks name

1 0 65536 ram0
1 1 65536 ram1
1 2 65536 ram2
1 3 65536 ram3
1 4 65536 ram4
1 5 65536 ram5
1 6 65536 ram6
1 7 65536 ram7
1 8 65536 ram8
1 9 65536 ram9
1 10 65536 ram10
1 11 65536 ram11
1 12 65536 ram12
1 13 65536 ram13
1 14 65536 ram14
1 15 65536 ram15
7 0 56414 loop0
8 0 488386584 sda
8 1 18874368 sda1
8 2 18874368 sda2
8 3 444869639 sda3
8 4 524288 sda4
8 5 4194304 sda5
8 6 1048576 sda6
8 32 488386584 sdc
8 48 488386584 sdd
8 16 1953514584 sdb
253 0 444858368 dm-0
======================================================
[root@localhost ~]# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: ATA Model: Samsung SSD 850 Rev: 3B6Q
Type: Direct-Access ANSI SCSI revision: 06
Host: scsi0 Channel: 00 Id: 01 Lun: 00
Vendor: ATA Model: ST2000LM015-2E81 Rev: SDM1
Type: Direct-Access ANSI SCSI revision: 06
Host: scsi0 Channel: 00 Id: 02 Lun: 00
Vendor: ATA Model: ST500LX025-1U717 Rev: SDM1
Type: Direct-Access ANSI SCSI revision: 06
Host: scsi0 Channel: 00 Id: 03 Lun: 00
Vendor: ATA Model: ST500LX025-1U717 Rev: SDM1
Type: Direct-Access ANSI SCSI revision: 06
==============================================
[root@localhost ~]# dmesg | grep disk
[ 29.019446] systemd[1]: Running in initial RAM disk.
[ 37.616568] sd 0:0:0:0: [sda] Attached SCSI disk
[ 37.684384] sd 0:0:3:0: [sdd] Attached SCSI disk
[ 38.102947] sd 0:0:2:0: [sdc] Attached SCSI disk
[ 38.284939] sd 0:0:1:0: [sdb] Attached SCSI disk
[ 222.507214] mpt2sas_cm0: scan devices: phys disk start
[ 222.507283] mpt2sas_cm0: break from phys disk scan: ioc_status(0x0022), loginfo(0x00000000)
[ 222.507284] mpt2sas_cm0: scan devices: phys disk complete
[ 565.038143] mpt2sas_cm0: scan devices: phys disk start
[ 565.038222] mpt2sas_cm0: break from phys disk scan: ioc_status(0x0022), loginfo(0x00000000)
[ 565.038223] mpt2sas_cm0: scan devices: phys disk complete