[ale] Suse migrations II

Damon Chesser dchesser at acsi2000.com
Tue Apr 19 12:03:26 EDT 2011 

Here is my problem:  I have 7 mount that are from FC on a hitatchi.  Suse 10.2 on a HP server (6 series?) with two qlogic cards.

I have one phys. Drive presented on the server /dev/ccsis/c0d0

LVM is in use, everything is mounted as a LV except for /boot and /root on c0d0 (c0d0p1, c0d0p2)

I can run vgdisplay -v FOO and find out what "drive" FOO is mounted on: in part:

--- Logical volume ---
  LV Name                /dev/FOO/FOO
 VG Name                FOO
  LV UUID                ZC0ZlW-UK4r-TC6j-Yvj2-qf7Y-34Dc-eNL5On
  LV Write Access        read/write
  LV Status              available
  # open                 2
  LV Size                248.99 GB
  Current LE             63742
  Segments               1
  Allocation             inherit
  Read ahead sectors     0
  Block device           253:0

  --- Physical volumes ---
  PV Name               /dev/sddlmag1
  PV UUID               kkzkQD-uxqX-Sgp1-bS0j-jWhq-AoI0-kASm6O
  PV Status             allocatable
  Total PE / Free PE    63742 / 0

What the heck is /dev/sddlmag1  (that is SDDLmag1)?  I have all my FC mounted as /dev/SDDLxxxx and I can't map that to any of the below:


ls -la /dev/sddlmag1
brw-r----- 1 root disk 251, 97 Mar 21 09:31 /dev/sddlmag1

I know by the size of the various LVM Volume Groups and by fdisk -l /dev/sdX that there is a one to one correlation between sddlxxxx and /dev/sdx, but except for one drive(FC mount) there are multiple choices based on size.





/dev/disk # ls -la by-id/
total 0
drwxr-xr-x 2 root root 400 Mar 21 09:31 .
drwxr-xr-x 5 root root 100 Mar 21 09:31 ..
lrwxrwxrwx 1 root root  16 Mar 21 09:31 cciss-3600508b10010343956584f3134380001 -> ../../cciss/c0d0
lrwxrwxrwx 1 root root  18 Mar 21 09:31 cciss-3600508b10010343956584f3134380001-part1 -> ../../cciss/c0d0p1
lrwxrwxrwx 1 root root  18 Mar 21 09:31 cciss-3600508b10010343956584f3134380001-part2 -> ../../cciss/c0d0p2
lrwxrwxrwx 1 root root  18 Mar 21 09:31 cciss-3600508b10010343956584f3134380001-part3 -> ../../cciss/c0d0p3
lrwxrwxrwx 1 root root   9 Mar 21 09:31 scsi-1HITACHI_770131020049 -> ../../sdb
lrwxrwxrwx 1 root root  10 Mar 21 09:31 scsi-1HITACHI_770131020049-part1 -> ../../sdb1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 scsi-1HITACHI_770131020050 -> ../../sda
lrwxrwxrwx 1 root root  10 Mar 21 09:31 scsi-1HITACHI_770131020050-part1 -> ../../sda1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 scsi-1HITACHI_770131020051 -> ../../sdc
lrwxrwxrwx 1 root root  10 Mar 21 09:31 scsi-1HITACHI_770131020051-part1 -> ../../sdc1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 scsi-1HITACHI_770131020091 -> ../../sdd
lrwxrwxrwx 1 root root  10 Mar 21 09:31 scsi-1HITACHI_770131020091-part1 -> ../../sdd1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 scsi-1HITACHI_770131020126 -> ../../sde
lrwxrwxrwx 1 root root  10 Mar 21 09:31 scsi-1HITACHI_770131020126-part1 -> ../../sde1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 scsi-1HITACHI_770131020127 -> ../../sdf
lrwxrwxrwx 1 root root  10 Mar 21 09:31 scsi-1HITACHI_770131020127-part1 -> ../../sdf1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 scsi-1HITACHI_770131020128 -> ../../sdg
lrwxrwxrwx 1 root root  10 Mar 21 09:31 scsi-1HITACHI_770131020128-part1 -> ../../sdg1

/dev/disk # ls -la by-path/
total 0
drwxr-xr-x 2 root root 400 Mar 21 09:31 .
drwxr-xr-x 5 root root 100 Mar 21 09:31 ..
lrwxrwxrwx 1 root root  16 Mar 21 09:31 pci-0000:0b:08.0-cciss-0:40000000 -> ../../cciss/c0d0
lrwxrwxrwx 1 root root  18 Mar 21 09:31 pci-0000:0b:08.0-cciss-0:40000000-part1 -> ../../cciss/c0d0p1
lrwxrwxrwx 1 root root  18 Mar 21 09:31 pci-0000:0b:08.0-cciss-0:40000000-part2 -> ../../cciss/c0d0p2
lrwxrwxrwx 1 root root  18 Mar 21 09:31 pci-0000:0b:08.0-cciss-0:40000000-part3 -> ../../cciss/c0d0p3
lrwxrwxrwx 1 root root   9 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:0 -> ../../sda
lrwxrwxrwx 1 root root  10 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:0-part1 -> ../../sda1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:1 -> ../../sdb
lrwxrwxrwx 1 root root  10 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:1-part1 -> ../../sdb1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:2 -> ../../sdc
lrwxrwxrwx 1 root root  10 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:2-part1 -> ../../sdc1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:3 -> ../../sdd
lrwxrwxrwx 1 root root  10 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:3-part1 -> ../../sdd1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:4 -> ../../sde
lrwxrwxrwx 1 root root  10 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:4-part1 -> ../../sde1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:5 -> ../../sdf
lrwxrwxrwx 1 root root  10 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:5-part1 -> ../../sdf1
lrwxrwxrwx 1 root root   9 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:6 -> ../../sdg
lrwxrwxrwx 1 root root  10 Mar 21 09:31 pci-0000:16:00.0-scsi-0:0:0:6-part1 -> ../../sdg1


ls -la by-uuid/
total 0
drwxr-xr-x 2 root root 600 Mar 21 09:31 .
drwxr-xr-x 5 root root 100 Mar 21 09:31 ..
lrwxrwxrwx 1 root root  10 Mar 21 09:31 13026f96-7d44-4509-aa94-35395448e110 -> ../../dm-2
etc etc listing all the LVM logical volumes


So, while to migrate off of Suse, I only need the max. amount of storage each box is using, it is driving me up the wall that I can't say /dev/SDDLmag1 ==/dev/sda or that /dev/sdb is used by VG foo and has lv bar on it.

You all gave me such good advice on how to start mapping the info so I could set up a target server to migrate to, I figured I would bounce this off of the list.  Most of the employees here are Unix so they don't know Linux dev mappings (which is why they hired me, but I have not worked with FC).

Please include me in the reply so I can read them at work.

 Sincerely,

Damon Chesser
damon at damtek.com



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