RE: Software Raid 5 (FC5)

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I appreciate what everyone is saying.  For our purposes this is the necessary way to go.  Does anyone have a suggestion as to how to work around this issue?  Does anyone have a direction to point me?
 
TIA
Mark Yarbrough


From: [email protected] [mailto:[email protected]] On Behalf Of Mark Yarbrough
Sent: Friday, March 31, 2006 10:50 AM
To: [email protected]
Subject: Software Raid 5 (FC5)

During install time I was made 10 raid partitions across 5 500GB SATA drives.  The final partition /dev/md8 wouldn’t partition format and anaconda would crash telling me that the partition couldn’t be formatted, and required a reboot.  After the 3rd attempt I figured that the partitions are all the same size so I will just format it when I am in the running operating system.

 

I took a look at my partitions using fdisk (take note that all 5 are the same save the drive number it self) <see paste at bottom>

 

The partitions are there. /dev/sdX11 is the partition that I am trying to use.  I tried to make the raid partitions to no avail.  I looked at /etc/mdadm.conf and saw that /dev/md8 is there.  >From my limited understanding I am under the assumption that the raid is made and all I need to do is format it.  I try to format it and I get the error reporting the device size to be zero.  The partitions are clearly not zero.  I am now stuck.  What should I do next?

 

Disk /dev/sda: 500.1 GB, 500107862016 bytes

255 heads, 63 sectors/track, 60801 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1       28683   230396166   fd  Linux raid autodetect

/dev/sda2           28684       38882    81923467+  fd  Linux raid autodetect

/dev/sda3           38883       41432    20482875   fd  Linux raid autodetect

/dev/sda4           41433       60801   155581492+   5  Extended

/dev/sda5           41433       43344    15358108+  fd  Linux raid autodetect

/dev/sda6           43345       45256    15358108+  fd  Linux raid autodetect

/dev/sda7           45257       46658    11261533+  fd  Linux raid autodetect

/dev/sda8           46659       47933    10241406   fd  Linux raid autodetect

/dev/sda9           47934       49208    10241406   fd  Linux raid autodetect

/dev/sda10          49209       49845     5116671   fd  Linux raid autodetect

/dev/sda11          49846       60796    87963876   fd  Linux raid autodetect

 

Disk /dev/sdb: 500.1 GB, 500107862016 bytes

255 heads, 63 sectors/track, 60801 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1   *           1       28683   230396166   fd  Linux raid autodetect

/dev/sdb2           28684       38882    81923467+  fd  Linux raid autodetect

/dev/sdb3           38883       41432    20482875   fd  Linux raid autodetect

/dev/sdb4           41433       60801   155581492+   5  Extended

/dev/sdb5           41433       43344    15358108+  fd  Linux raid autodetect

/dev/sdb6           43345       45256    15358108+  fd  Linux raid autodetect

/dev/sdb7           45257       46658    11261533+  fd  Linux raid autodetect

/dev/sdb8           46659       47933    10241406   fd  Linux raid autodetect

/dev/sdb9           47934       49208    10241406   fd  Linux raid autodetect

/dev/sdb10          49209       49845     5116671   fd  Linux raid autodetect

/dev/sdb11          49846       60796    87963876   fd  Linux raid autodetect

 

Disk /dev/sdc: 500.1 GB, 500107862016 bytes

255 heads, 63 sectors/track, 60801 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sdc1   *           1       28683   230396166   fd  Linux raid autodetect

/dev/sdc2           28684       38882    81923467+  fd  Linux raid autodetect

/dev/sdc3           38883       41432    20482875   fd  Linux raid autodetect

/dev/sdc4           41433       60801   155581492+   5  Extended

/dev/sdc5           41433       43344    15358108+  fd  Linux raid autodetect

/dev/sdc6           43345       45256    15358108+  fd  Linux raid autodetect

/dev/sdc7           45257       46658    11261533+  fd  Linux raid autodetect

/dev/sdc8           46659       47933    10241406   fd  Linux raid autodetect

/dev/sdc9           47934       49208    10241406   fd  Linux raid autodetect

/dev/sdc10          49209       49845     5116671   fd  Linux raid autodetect

/dev/sdc11          49846       60796    87963876   fd  Linux raid autodetect

 

Disk /dev/sdd: 500.1 GB, 500107862016 bytes

255 heads, 63 sectors/track, 60801 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sdd1   *           1       28683   230396166   fd  Linux raid autodetect

/dev/sdd2           28684       38882    81923467+  fd  Linux raid autodetect

/dev/sdd3           38883       41432    20482875   fd  Linux raid autodetect

/dev/sdd4           41433       60801   155581492+   5  Extended

/dev/sdd5           41433       43344    15358108+  fd  Linux raid autodetect

/dev/sdd6           43345       45256    15358108+  fd  Linux raid autodetect

/dev/sdd7           45257       46658    11261533+  fd  Linux raid autodetect

/dev/sdd8           46659       47933    10241406   fd  Linux raid autodetect

/dev/sdd9           47934       49208    10241406   fd  Linux raid autodetect

/dev/sdd10          49209       49845     5116671   fd  Linux raid autodetect

/dev/sdd11          49846       60796    87963876   fd  Linux raid autodetect

 

Disk /dev/sde: 500.1 GB, 500107862016 bytes

255 heads, 63 sectors/track, 60801 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

 

   Device Boot      Start         End      Blocks   Id  System

/dev/sde1   *           1       28683   230396166   fd  Linux raid autodetect

/dev/sde2           28684       38882    81923467+  fd  Linux raid autodetect

/dev/sde3           38883       41432    20482875   fd  Linux raid autodetect

/dev/sde4           41433       60801   155581492+   5  Extended

/dev/sde5           41433       43344    15358108+  fd  Linux raid autodetect

/dev/sde6           43345       45256    15358108+  fd  Linux raid autodetect

/dev/sde7           45257       46658    11261533+  fd  Linux raid autodetect

/dev/sde8           46659       47933    10241406   fd  Linux raid autodetect

/dev/sde9           47934       49208    10241406   fd  Linux raid autodetect

/dev/sde10          49209       49845     5116671   fd  Linux raid autodetect

/dev/sde11          49846       60796    87963876   fd  Linux raid autodetect

 

# mdadm.conf written out by anaconda

DEVICE partitions

MAILADDR root

ARRAY /dev/md8 level=raid5 num-devices=5 uuid=fc489661:c7e54273:f9a60c82:fb747b29

ARRAY /dev/md6 level=raid5 num-devices=5 uuid=eac1a77f:5278bfcd:4ae75c92:7ecde09b

ARRAY /dev/md3 level=raid5 num-devices=5 uuid=1e94cb1d:f84f5a3b:1e0ff333:408d5bb7

ARRAY /dev/md5 level=raid5 num-devices=5 uuid=f5bfaf8b:8a591cf0:d73b7d31:4c07a93b

ARRAY /dev/md1 level=raid5 num-devices=5 uuid=0bf1a445:323d5326:5a7a92fc:1c346c33

ARRAY /dev/md9 level=raid5 num-devices=5 uuid=f5811eae:cfb21182:41881dcf:739f1bad

ARRAY /dev/md4 level=raid5 num-devices=5 uuid=348c95b9:df7feee6:41713309:a9324496

ARRAY /dev/md0 level=raid5 num-devices=5 uuid=bf7ef721:318d6d4e:b626b349:5f9c7e15

ARRAY /dev/md7 level=raid5 num-devices=5 uuid=a196ca52:c6700579:ff5a0379:9d6c9084

ARRAY /dev/md2 level=raid5 num-devices=5 uuid=5e0d3003:e65e36d0:25158ed3:f81e126d

 

 


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