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Full Discussion: how to mount RAID partician
Special Forums Hardware Filesystems, Disks and Memory how to mount RAID partician Post 302508518 by Corona688 on Monday 28th of March 2011 11:10:28 AM
Old 03-28-2011
Quote:
Originally Posted by kpoobathi
Dear Corona688,

As you told we tried for each..
it shows error like..

~]# mount /dev/sdb5 /mnt/Mirror/sdbAll
mount: /dev/sdb5 already mounted or /mnt/Mirror/sdbAll busy
That's not quite what I told you. Smilie

I think this is a software RAID. You'll have to use the md* devices.
Quote:
# cat /proc/mdstat
Personalities : [raid1] [raid0]
md11 : active raid1 sdb2[0]
68091392 blocks [2/1] [U_]

md10 : active raid1 sdb3[0]
68091392 blocks [2/1] [U_]

md8 : active raid1 sdb5[0]
68091392 blocks [2/1] [U_]

md6 : active raid1 sdb6[0]
7341568 blocks [2/1] [U_]
...
... for all.
unused devices: <none>
There you go. The software RAID is active, and that is why you can't use the raw /dev/sdb* devices. The MD driver has taken them over and provided md* devices in their place. sdb6 is available as md6, sdb5 is available as md8, etc, etc. Either it was setup this way from the start, or the system autodetected the RAID partitions and turned them into md devices for you.

You still can't use it all as one giant thing -- it never was one giant thing. But you should be able to mount these md1,md2,... devices individually.

Half the RAID seems to be missing, but since this was a mirror, it fortunately still works.

Since you didn't post the entire, unaltered output of mdstat I can't tell you where to mount which in what order.

Last edited by Corona688; 03-28-2011 at 12:16 PM..
 

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mount_pcfs(1M)						  System Administration Commands					    mount_pcfs(1M)

NAME
mount_pcfs - mount pcfs file systems SYNOPSIS
mount -F pcfs [generic_options] [-o FSType-specific_options] special | mount_point mount -F pcfs [generic_options] [-o FSType-specific_options] special mount_point DESCRIPTION
mount attaches an MS-DOS file system (pcfs) to the file system hierarchy at the mount_point, which is the pathname of a directory. If mount_point has any contents prior to the mount operation, these are hidden until the file system is unmounted. If mount is invoked with special or mount_point as the only arguments, mount will search /etc/vfstab to fill in the missing arguments, including the FSType-specific_options; see mount(1M) for more details. The special argument can be one of two special device file types: o A floppy disk, such as /dev/diskette0 or /dev/diskette1. o A DOS logical drive on a hard disk expressed as device-name:logical-drive , where device-name specifies the special block device-file for the whole disk and logical-drive is either a drive letter (c through z) or a drive number (1 through 24). Examples are /dev/dsk/c0t0d0p0:c and /dev/dsk/c0t0d0p0:1. The special device file type must have a formatted MS-DOS file system with either a 12-bit, 16-bit, or 32-bit File Allocation Table. OPTIONS
generic_options See mount(1M) for the list of supported options. -o Specify pcfs file system specific options. The following options are supported: foldcase|nofoldcase Force uppercase characters in filenames to lowercase when reading them from the filesystem. This is for compatibility with the pre- vious behavior of pcfs. The default is nofoldcase. FILES
/etc/mnttab table of mounted file systems /etc/vfstab list of default parameters for each file system ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ SEE ALSO
mount(1M), mountall(1M), mount(2), mnttab(4), vfstab(4), attributes(5), pcfs(7FS) NOTES
If the directory on which a file system is to be mounted is a symbolic link, the file system is mounted on the directory to which the sym- bolic link refers, rather than on top of the symbolic link itself. SunOS 5.10 24 Nov 2003 mount_pcfs(1M)
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