我正在构建一个新的（电源）系统。主板是华硕 Sabertooth 990FX。我已安装：
- 1 500GB HD 用于操作系统和用户帐户（安装在 /）
- 在 BIOS 上将三个 2TB 驱动器设置为单个 raid0（安装在 /raid 上）
问题是我无法从挂载点确认突袭的大小。当我查看 /raid 的属性时，它告诉我free space: unknown。我不确定我得到的输出，fdisk -l因为这是我第一次尝试突袭。
fdisk没有定论，cat /proc/meminfo似乎表明我没有得到我期望的记忆（见下文！）。
任何帮助都将不胜感激。
布鲁斯
***********************fdisk -l输出：
WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.
Warning: invalid flag 0x0000 of partition table 5 will be corrected by w(rite)
Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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 identifier: 0x0009a55f
Device Boot Start End Blocks Id System
/dev/sda1 384 3095388671 1547694144 fd Linux raid autodetect
/dev/sda2 3095389054 3128815103 16713025 5 Extended
WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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 identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdb1 1 3907029167 1953514583+ ee GPT
WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 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 identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdc1 1 3907029167 1953514583+ ee GPT
Disk /dev/sdd: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 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 identifier: 0x000bc319
Device Boot Start End Blocks Id System
/dev/sdd1 * 2152710 976768064 487307677+ 83 Linux
/dev/sdd2 124 2152709 1076293 5 Extended
/dev/sdd5 126 2152709 1076292 82 Linux swap / Solaris
Partition table entries are not in disk order
Disk /dev/mapper/pdc_beejhachf: 1602.0 GB, 1601953333248 bytes
255 heads, 63 sectors/track, 194759 cylinders, total 3128815104 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 196608 bytes
Disk identifier: 0x0009a55f
Device Boot Start End Blocks Id System
/dev/mapper/pdc_beejhachf1 384 3095388671 1547694144 fd Linux raid autodetect
/dev/mapper/pdc_beejhachf2 3095389054 3128815103 16713025 5 Extended
Partition 2 does not start on physical sector boundary.
/dev/mapper/pdc_beejhachf5 3095389056 3128815103 16713024 82 Linux swap / Solaris
Disk /dev/mapper/pdc_beejhachf1: 1584.8 GB, 1584838803456 bytes
255 heads, 63 sectors/track, 192679 cylinders, total 3095388288 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 196608 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/pdc_beejhachf1 doesn't contain a valid partition table
Disk /dev/mapper/pdc_beejhachf5: 17.1 GB, 17114136576 bytes
255 heads, 63 sectors/track, 2080 cylinders, total 33426048 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 196608 bytes
Disk identifier: 0x00000000
Disk /dev/mapper/pdc_beejhachf5 doesn't contain a valid partition table
************************cat /proc/meminfo输出
MemTotal: 16405964 kB
MemFree: 14722300 kB
Buffers: 64496 kB
Cached: 709308 kB
SwapCached: 0 kB
Active: 886560 kB
Inactive: 391952 kB
Active(anon): 505508 kB
Inactive(anon): 712 kB
Active(file): 381052 kB
Inactive(file): 391240 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 16713020 kB
SwapFree: 16713020 kB
Dirty: 552 kB
Writeback: 388 kB
AnonPages: 504664 kB
Mapped: 197904 kB
Shmem: 1512 kB
Slab: 96652 kB
SReclaimable: 72460 kB
SUnreclaim: 24192 kB
KernelStack: 2904 kB
PageTables: 21804 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 24916000 kB
Committed_AS: 2080264 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 334800 kB
VmallocChunk: 34359391644 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 138240 kB
DirectMap2M: 4005888 kB
DirectMap1G: 12582912 kB
****************************grep MemTotal /proc/meminfo输出
MemTotal: 16405964 kB
答案1
你有假 RAID。
经验法则是，除非你花费数百美元购买 RAID 设备，否则你不会拥有硬件 RAID。在许多情况下，软件 RAID 比硬件 RAID 更可取，所以这不是问题。但是，你可能更喜欢真正的 Linux 软件 RAID (md)