Google Compute Engine safe_format_mount问题-指定文件系统类型错误 [英] Google Compute Engine safe_format_mount issue - specify the filesystem type error

问题描述

我一直在关注有关将MongoDB与GCE一起使用的教程，

I have been following the tutorial about using MongoDB with GCE from

http://docs.mongodb.org/ecosystem/platforms/google-compute-engine/

我为MongoDB存储创建了一个单独的SSD磁盘，并将其附加到实例，但是当我尝试安全挂载时

I created a separate SSD disk for MongoDB storage and attached it to instance but when I tried to safe mount

sudo/usr/share/google/safe_format_and_mount \ -m"mkfs.ext4 -F -o默认值，自动，noatime，noexec"/dev/sdb/data

sudo /usr/share/google/safe_format_and_mount \ -m "mkfs.ext4 -F -o defaults,auto,noatime,noexec" /dev/sdb /data

我收到此错误:

safe_format_and_mount: Running: fsck.ext4 -a /dev/sdb
safe_format_and_mount: fsck.ext4: Bad magic number in super-block while trying to open /dev/sdb
safe_format_and_mount: /dev/sdb: 
safe_format_and_mount: The superblock could not be read or does not describe a correct ext2
safe_format_and_mount: filesystem.  If the device is valid and it really contains an ext2
safe_format_and_mount: filesystem (and not swap or ufs or something else), then the superblock
safe_format_and_mount: is corrupt, and you might try running e2fsck with an alternate superblock:
safe_format_and_mount:     e2fsck -b 8193 <device>
safe_format_and_mount: 
safe_format_and_mount: Fsck could not correct errors on /dev/sdb
safe_format_and_mount: Running: mount -o discard,defaults /dev/sdb /data
safe_format_and_mount: mount: you must specify the filesystem type
/usr/share/google/safe_format_and_mount: line 83: file: command not found
safe_format_and_mount: Running: mkfs.ext4 -F -o defaults,auto,noatime,noexec /dev/sdb
safe_format_and_mount: mke2fs 1.42.5 (29-Jul-2012)
safe_format_and_mount: Discarding device blocks: done                            
safe_format_and_mount: mkfs.ext4: unknown os - defaults,auto,noatime,noexec
safe_format_and_mount: Format of /dev/sdb failed.
safe_format_and_mount: Running: mount -o discard,defaults /dev/sdb /data
safe_format_and_mount: mount: you must specify the filesystem type
safe_format_and_mount: Tried everything we could, but could not mount /dev/sdb.

但是当我删除默认值时，自动，noatime，noexec并仅使用mkfs.ext4 -F即可.

but when I remove defaults, auto, noatime, noexec and just use mkfs.ext4 -F it works.

但是，如果我设置了MongoDB的dbpath，MongoDB服务器将无法启动.如果我们运行MongoDB，则会产生错误的扇区.

But if i set the dbpath of MongoDB, MongoDB server can't start. If we run MongoDB it gives bad sector.

那么如何使用GCE挂载更多磁盘并创建正确的ext4文件系统?

So how to mount additional disk and create a proper ext4 filesystem with GCE?

推荐答案

您提供的链接中似乎有错字:

Looks like there is a typo in the link you provide:

根据命令的帮助，正确的语法是:

As per the help of the command, the correct syntax is:

/usr/share/google/safe_format_and_mount [-f fsck_cmd] [-m mkfs_cmd] [-o mount_opts] <device> <mountpoint>

如您所见，-m参数用于指定分区设备的选项，但是"mkfs.ext4 -F -o defaults,auto,noatime,noexec"混合使用mkfs和mount参数.您需要先关闭双引号，并且命令应如下所示:

As you can see there, the -m parameter is used to specify the options to partition the device but "mkfs.ext4 -F -o defaults,auto,noatime,noexec" mixes mkfs and mount parameters. You need to close the double quotes before and your command should look like:

sudo /usr/share/google/safe_format_and_mount -m "mkfs.ext4 -F" -o defaults,auto,noatime,noexec /dev/sdb /data/

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