我有一台 Dell 服务器，服务器上连接了 Dell 存储，并设置了多路径。Dell 技术人员将 Red Hat 7 安装在服务器的内部磁盘 ( /dev/sda) 中，并将驱动器映射到存储中/dev/mapper/DB_DATA01。
一切运行正常，只是到外部存储的 2 条路径也被视为 /dev/sdb 和 /dev/sdc。
然后我犯了一个错误：运行在 /dev/sdb 中而不是 中parted创建一个表。完成此操作后，我已正确创建并格式化中的分区，并正确设置了 中的挂载指令。然后我重新启动了。gpt/dev/mapper/DB_DATA01xfs/dev/mapper/DB_DATA01/dev/fstab
现在，每次我重新启动服务器时，它都会要求进入维护模式，并说无法挂载/dev/mapper/DB_DATA01到/db2挂载点。但是，如果我按下，CTRL +D服务器就会正常启动，一切正常……
我怎样才能修复这个混乱局面并使服务器无需维护即可启动？
我知道某个地方配置有误。顺便说一下，这些是我现在的输出：
[root@db2server etc]# cat /etc/fstab
#
# /etc/fstab
# Created by anaconda on Mon Oct 17 16:29:48 2016
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=ad5ce7b2-4517-42a9-b558-afc40f5950b4 / xfs defaults 0 0
UUID=ad193bfa-b17d-49da-92b5-53295f5e33b2 swap swap defaults 0 0
UUID=f0241ef6-f167-4edb-9a48-4bda7433eec4 /db2 xfs noatime,nobarrier,allocsize=4k,largeio 0 2
[root@db2server etc]# ls -lha /dev/mapper/
total 0
drwxr-xr-x. 2 root root 140 Oct 31 17:27 .
drwxr-xr-x. 20 root root 3.5K Oct 31 17:27 ..
crw-------. 1 root root 10, 236 Oct 31 16:57 control
lrwxrwxrwx. 1 root root 7 Oct 31 17:27 DB_DATA01 -> ../dm-0
lrwxrwxrwx. 1 root root 7 Oct 31 17:27 DB_DATA01p1 -> ../dm-1
lrwxrwxrwx. 1 root root 7 Oct 31 17:27 DB_DATA01p2 -> ../dm-2
lrwxrwxrwx. 1 root root 7 Oct 31 17:27 DB_DATA01p3 -> ../dm-3
[root@db2server etc]# fdisk -l
Disk /dev/sda: 299.4 GB, 299439751168 bytes, 584843264 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: dos
Disk identifier: 0x57b68016
Device Boot Start End Blocks Id System
/dev/sda1 63 80324 40131 de Dell Utility
/dev/sda2 * 81920 4276223 2097152 c W95 FAT32 (LBA)
/dev/sda3 4276224 66775039 31249408 82 Linux swap / Solaris
/dev/sda4 66775040 584843263 259034112 5 Extended
/dev/sda5 66777088 584843263 259033088 83 Linux
Disk /dev/sdc: 3793.3 GB, 3793315115520 bytes, 7408818585 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 524288 bytes / 524288 bytes
Disk label type: dos
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdc1 1 4294967295 2147483647+ ee GPT
Partition 1 does not start on physical sector boundary.
fdisk: cannot open /dev/sdb: Input/output error
[root@db2server etc]# multipath -l
DB_DATA01 (36000d310034940000000000000000003) dm-0 COMPELNT,Compellent Vol
size=3.5T features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='service-time 0' prio=0 status=active
|- 1:0:0:1 sdb 8:16 active undef running
`- 1:0:1:1 sdc 8:32 active undef running
[root@db2server etc]# multipath -ll
DB_DATA01 (36000d310034940000000000000000003) dm-0 COMPELNT,Compellent Vol
size=3.5T features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='service-time 0' prio=1 status=active
|- 1:0:0:1 sdb 8:16 active ready running
`- 1:0:1:1 sdc 8:32 active ready running
[root@db2server etc]# multipath -v2
*No data returned*
[root@db2server etc]# multipath -v3
Oct 31 17:40:16 | loading /lib64/multipath/libcheckdirectio.so checker
Oct 31 17:40:16 | loading /lib64/multipath/libprioconst.so prioritizer
Oct 31 17:40:16 | sda: device node name blacklisted
Oct 31 17:40:16 | sdb: not found in pathvec
Oct 31 17:40:16 | sdb: mask = 0x3f
Oct 31 17:40:16 | sdb: dev_t = 8:16
Oct 31 17:40:16 | sdb: size = 7408818585
Oct 31 17:40:16 | sdb: vendor = COMPELNT
Oct 31 17:40:16 | sdb: product = Compellent Vol
Oct 31 17:40:16 | sdb: rev = 0606
Oct 31 17:40:16 | sdb: h:b:t:l = 1:0:0:1
Oct 31 17:40:16 | sdb: tgt_node_name = 0x5000d31003494015
Oct 31 17:40:16 | sdb: path state = running
Oct 31 17:40:16 | sdb: 2425 cyl, 255 heads, 63 sectors/track, start at 0
Oct 31 17:40:16 | sdb: serial = 00034940-00000003
Oct 31 17:40:16 | sdb: get_state
Oct 31 17:40:16 | loading /lib64/multipath/libchecktur.so checker
Oct 31 17:40:16 | sdb: path checker = tur (controller setting)
Oct 31 17:40:16 | sdb: checker timeout = 30000 ms (sysfs setting)
Oct 31 17:40:16 | sdb: state = up
Oct 31 17:40:16 | sdb: uid_attribute = ID_SERIAL (internal default)
Oct 31 17:40:16 | sdb: uid = 36000d310034940000000000000000003 (udev)
Oct 31 17:40:16 | sdb: detect_prio = 1 (config file default)
Oct 31 17:40:16 | sdb: prio = const (controller setting)
Oct 31 17:40:16 | sdb: prio args = (null) (controller setting)
Oct 31 17:40:16 | sdb: const prio = 1
Oct 31 17:40:16 | sdc: not found in pathvec
Oct 31 17:40:16 | sdc: mask = 0x3f
Oct 31 17:40:16 | sdc: dev_t = 8:32
Oct 31 17:40:16 | sdc: size = 7408818585
Oct 31 17:40:16 | sdc: vendor = COMPELNT
Oct 31 17:40:16 | sdc: product = Compellent Vol
Oct 31 17:40:16 | sdc: rev = 0606
Oct 31 17:40:16 | sdc: h:b:t:l = 1:0:1:1
Oct 31 17:40:16 | sdc: tgt_node_name = 0x5000d31003494008
Oct 31 17:40:16 | sdc: path state = running
Oct 31 17:40:16 | sdc: 2425 cyl, 255 heads, 63 sectors/track, start at 0
Oct 31 17:40:16 | sdc: serial = 00034940-00000003
Oct 31 17:40:16 | sdc: get_state
Oct 31 17:40:16 | sdc: path checker = tur (controller setting)
Oct 31 17:40:16 | sdc: checker timeout = 30000 ms (sysfs setting)
Oct 31 17:40:16 | sdc: state = up
Oct 31 17:40:16 | sdc: uid_attribute = ID_SERIAL (internal default)
Oct 31 17:40:16 | sdc: uid = 36000d310034940000000000000000003 (udev)
Oct 31 17:40:16 | sdc: detect_prio = 1 (config file default)
Oct 31 17:40:16 | sdc: prio = const (controller setting)
Oct 31 17:40:16 | sdc: prio args = (null) (controller setting)
Oct 31 17:40:16 | sdc: const prio = 1
Oct 31 17:40:16 | sr0: device node name blacklisted
Oct 31 17:40:16 | sdd: not found in pathvec
Oct 31 17:40:16 | sdd: mask = 0x3f
Oct 31 17:40:16 | sdd: dev_t = 8:48
Oct 31 17:40:16 | sdd: size = 0
Oct 31 17:40:16 | sdd: vendor = iDRAC
Oct 31 17:40:16 | sdd: product = Virtual Floppy
Oct 31 17:40:16 | sdd: rev = 0329
Oct 31 17:40:16 | sdd: h:b:t:l = 12:0:0:1
Oct 31 17:40:16 | sdd: path state = running
Oct 31 17:40:16 | sr1: device node name blacklisted
Oct 31 17:40:16 | dm-0: device node name blacklisted
Oct 31 17:40:16 | dm-1: device node name blacklisted
Oct 31 17:40:16 | dm-2: device node name blacklisted
Oct 31 17:40:16 | dm-3: device node name blacklisted
===== paths list =====
uuid hcil dev dev_t pri dm_st chk_st vend/pro
36000d310034940000000000000000003 1:0:0:1 sdb 8:16 1 undef ready COMPELNT
36000d310034940000000000000000003 1:0:1:1 sdc 8:32 1 undef ready COMPELNT
12:0:0:1 sdd 8:48 -1 undef faulty iDRAC
Oct 31 17:40:16 | params = 1 queue_if_no_path 0 1 1 service-time 0 2 2 8:16 1 1 8:32 1 1
Oct 31 17:40:16 | status = 2 0 0 0 1 1 A 0 2 2 8:16 A 1 0 1 8:32 A 0 0 1
Oct 31 17:40:16 | DB_DATA01: disassemble map [1 queue_if_no_path 0 1 1 service-time 0 2 2 8:16 1 1 8:32 1 1 ]
Oct 31 17:40:16 | DB_DATA01: disassemble status [2 0 0 0 1 1 A 0 2 2 8:16 A 1 0 1 8:32 A 0 0 1 ]
Oct 31 17:40:16 | tur checker refcount 2
Oct 31 17:40:16 | const prioritizer refcount 2
Oct 31 17:40:16 | tur checker refcount 1
Oct 31 17:40:16 | const prioritizer refcount 1
Oct 31 17:40:16 | unloading const prioritizer
Oct 31 17:40:16 | unloading tur checker
Oct 31 17:40:16 | unloading directio checker
答案1
好吧...在网上广泛研究后，我找到了一个解决方案，将内部创建的错误 GPT 分区“归零” /dev/sdb。之后，我需要做的就是创建另一个gpt分区表/dev/mapper/DB_DATA01（如果您注意到之前有 3 个分区）。
我在这里用了一条小蟒蛇如何从 HDD 中删除 GPT从中删除所有分区表/dev/sdb。
然后我使用实用程序利用映射设备中的所有空间gdisk创建一个新表和新分区。GPT
之后，只需mkfs.xfs再次使用 进行格式化，即可获得 ID blkid。然后替换旧 ID/etc/fstab并重新启动。
瞧！一切又恢复正常了！