Linux
更換驅動器後如何重建我的軟體 RAID1 陣列?
所以我有 1and1 專用主機和 RAID 1 設置。其中一個驅動器壞了,他們剛剛用一個好的驅動器替換了它。現在我需要建構,但我不確定哪個驅動器是舊驅動器,哪個驅動器是新的空白驅動器。請幫忙。這是說明:http ://help.1and1.com/servers-c37684/linux-server-c37687/system-recovery-c37690/how-do-i-rebuild-my-software-raid-array-after-a-驅動器更換-a730894.html
正如我正確理解的那樣,我*認為*我的舊驅動器是 /dev/sda,這意味著我應該繼續執行步驟 7:
sfdisk -d /dev/sda | sfdisk /dev/sdb
我對麼?這是我的控制台內容。請幫忙,謝謝。
[root@u16365582 ~]# fdisk -l Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x416e0acb Device Boot Start End Blocks Id System /dev/sda1 1 523 4194304 fd Linux raid autodetect Partition 1 does not end on cylinder boundary. /dev/sda2 523 784 2097152 82 Linux swap / Solaris Partition 2 does not end on cylinder boundary. /dev/sda3 784 121602 970470104 fd Linux raid autodetect Partition 3 does not end on cylinder boundary. Disk /dev/md3: 993.8 GB, 993761296384 bytes 2 heads, 4 sectors/track, 242617504 cylinders Units = cylinders of 8 * 512 = 4096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/md1: 4294 MB, 4294901760 bytes 2 heads, 4 sectors/track, 1048560 cylinders Units = cylinders of 8 * 512 = 4096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/mapper/vg00-usr: 34.4 GB, 34359738368 bytes 255 heads, 63 sectors/track, 4177 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/mapper/vg00-var: 871.9 GB, 871878361088 bytes 255 heads, 63 sectors/track, 105999 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/mapper/vg00-home: 4294 MB, 4294967296 bytes 255 heads, 63 sectors/track, 522 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 [root@u16365582 ~]# cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sda1[0] 4194240 blocks [2/1] [U_] bitmap: 1/1 pages [4KB], 65536KB chunk md3 : active raid1 sda3[1] 970470016 blocks [2/1] [_U] bitmap: 206/232 pages [824KB], 2048KB chunk unused devices: <none> [root@u16365582 ~]#
/dev/sda 是您報告的“好”驅動器
mdstat
。它也是由 報告的具有有效分區數據的分區fdisk
。如果您在需要保留其數據的位置之前沒有使用 /dev/sdb 進行任何操作,那麼按照指南的建議使用 sfdisk 將分區資訊複製到 /dev/sdb 應該是安全的。完成此操作後(並且可能在額外
partprobe
呼叫之後),您應該能夠分別mdadm manage [...] --add [...]
訪問分區/dev/sdb1
和/dev/sdb3
到md1
和md3
。