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Please help me read /proc/mdstat


Could someone help me read the /proc/mdstat file on my Sarge.

I am doing disk mirroring with 2 disks.

at the end of md7 and md5 I have [_U] written
all others have [UU] at their ends.

What does this mean??

has the raid failed in md7 and md5????

Please let me know.

Here is the full output

# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 hda2[0] hdc2[1]
      289088 blocks [2/2] [UU]

md2 : active raid1 hda3[0] hdc3[1]
      3903680 blocks [2/2] [UU]

md3 : active raid1 hda5[0] hdc5[1]
      489856 blocks [2/2] [UU]

md4 : active raid1 hda6[0] hdc6[1]
      489856 blocks [2/2] [UU]

md6 : active raid1 hda8[0] hdc8[1]
      19534912 blocks [2/2] [UU]

md7 : active raid1 hdc9[1]
      50508224 blocks [2/1] [_U]

md0 : active raid1 hda1[0] hdc1[1]
      1951744 blocks [2/2] [UU]

md5 : active raid1 hdc7[1]
      979840 blocks [2/1] [_U]

unused devices: <none>

Thankyou so much

Kind Regards


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