Lun remove, stuck in /dev/dsk and /dev/rdsk


 
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Operating Systems Solaris Lun remove, stuck in /dev/dsk and /dev/rdsk
# 1  
Old 04-30-2013
Lun remove, stuck in /dev/dsk and /dev/rdsk

So, we removed a LUN from the SAN and the system is refusing to remove the references to it in the /dev folder. I've done the following:

devfsadm -Cv
powermt -q
luxadm -e offline <drive path>
luxadm probe

All those commands failed to remove the path. The drive stills shows up as <drive type unknown> using the format command. Any ideas?

---------- Post updated at 07:47 AM ---------- Previous update was at 07:21 AM ----------

Oh, I forgot to add I've reboot --r too. Here's some ouput that show more info on the error and steps I've taken.

Code:
bash-3.2# cfgadm -a -o show_SCSI_LUN
Ap_Id                          Type         Receptacle   Occupant     Condition
c1                             fc           connected    unconfigured unknown
c2                             fc-fabric    connected    configured   unknown
c2::500601623ce01998,0         disk         connected    configured   unknown
c2::500601623ce01998,1         disk         connected    configured   unknown
c2::500601623ce01998,2         disk         connected    configured   unknown
c2::5006016a3ce01998,0         disk         connected    configured   unknown
c2::5006016a3ce01998,1         disk         connected    configured   unknown
c2::5006016a3ce01998,2         disk         connected    configured   unknown
bash-3.2# echo|format
Searching for disks...done


AVAILABLE DISK SELECTIONS:
       0. c0t0d0 <SUN80G cyl 65533 alt 2 hd 16 sec 149>
          /pci@7c0/pci@0/pci@8/scsi@2/sd@0,0
       1. c2t5006016A3CE01998d0 <drive type unknown>
          /pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0
       2. c2t5006016A3CE01998d1 <DGC-RAID5-0429 cyl 40958 alt 2 hd 256 sec 10>
          /pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,1
       3. c2t5006016A3CE01998d2 <DGC-RAID5-0429 cyl 51198 alt 2 hd 256 sec 16>  new_lun
          /pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,2
       4. c2t500601623CE01998d0 <drive type unknown>
          /pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0
       5. c2t500601623CE01998d1 <DGC-RAID5-0429 cyl 40958 alt 2 hd 256 sec 10>
          /pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,1
       6. c2t500601623CE01998d2 <DGC-RAID5-0429 cyl 51198 alt 2 hd 256 sec 16>  new_lun
          /pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,2
       7. emcpower0e <DGC-RAID5-0429 cyl 40958 alt 2 hd 256 sec 10>
          /pseudo/emcp@0
       8. emcpower2d <DGC-RAID5-0429 cyl 51198 alt 2 hd 256 sec 16>  new_lun
          /pseudo/emcp@2
Specify disk (enter its number): Specify disk (enter its number):
bash-3.2# cfgadm -c unconfigure -o unusable_SCSI_LUN c2::5006016A3CE01998d0
bash-3.2# cfgadm -c unconfigure -o unusable_SCSI_LUN c2::500601623CE01998d0
bash-3.2# luxadm probe
No Network Array enclosures found in /dev/es

Found Fibre Channel device(s):
  Node WWN:50060160bce01998  Device Type:Disk device
    Logical Path:/dev/rdsk/c2t5006016A3CE01998d0s2
    Logical Path:/dev/rdsk/c2t500601623CE01998d0s2
  Node WWN:50060160bce01998  Device Type:Disk device
    Logical Path:/dev/rdsk/c2t5006016A3CE01998d1s2
    Logical Path:/dev/rdsk/c2t500601623CE01998d1s2
  Node WWN:50060160bce01998  Device Type:Disk device
    Logical Path:/dev/rdsk/c2t5006016A3CE01998d2s2
    Logical Path:/dev/rdsk/c2t500601623CE01998d2s2
bash-3.2# devfsadm -Cv

# 2  
Old 04-30-2013
This may be a silly question but since you know which 'device' it is, why don't you manually remove the device node yourself from /dev/rdsk, /dev/dsk and /dev/cfg?

If it won't let you do that with the system up, take it down, boot from CD, mount the HD root filesystem under /a, and get in there and do it.

Or am I missing something here?

Why do you necessarily need to get rid of it anyway?

Last edited by hicksd8; 04-30-2013 at 09:01 AM..
This User Gave Thanks to hicksd8 For This Post:
# 3  
Old 04-30-2013
No, it's probably not a silly question. But, mucking about inside /dev isn't something I'm willing to do with my current skills. It needs to be removed because we had to make some changes on our storage and that LUN is no longer available. Now I just need to convince the server to just let it go. Smilie

---------- Post updated at 08:08 AM ---------- Previous update was at 07:58 AM ----------

Quote:
Originally Posted by hicksd8
This may be a silly question but since you know which 'device' it is, why don't you manually remove the device node yourself from /dev/rdsk, /dev/dsk and /dev/cfg?

If it won't let you do that with the system up, take it down, boot from CD, mount the HD root filesystem under /a, and get in there and do it.

Or am I missing something here?

Why do you necessarily need to get rid of it anyway?
Well.... I decided to delete the /dev/dsk and /dev/rdsk references. While booted into single user mode, it worked with no problem. But, when I ran a devfsadm -Cv it recreated all the references. Smilie

Code:
bash-3.2# devfsadm -Cv
devfsadm[1365]: verbose: symlink /dev/dsk/c2t500601623CE01998d0s0 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0:                      a
devfsadm[1365]: verbose: symlink /dev/dsk/c2t500601623CE01998d0s1 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0:                      b
devfsadm[1365]: verbose: symlink /dev/dsk/c2t500601623CE01998d0s2 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0:                      c
devfsadm[1365]: verbose: symlink /dev/dsk/c2t500601623CE01998d0s3 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0:                      d
devfsadm[1365]: verbose: symlink /dev/dsk/c2t500601623CE01998d0s4 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0:                      e
devfsadm[1365]: verbose: symlink /dev/dsk/c2t500601623CE01998d0s5 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0:                      f
devfsadm[1365]: verbose: symlink /dev/dsk/c2t500601623CE01998d0s6 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0:                      g
devfsadm[1365]: verbose: symlink /dev/dsk/c2t500601623CE01998d0s7 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0:                      h
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t500601623CE01998d0s0 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0                      :a,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t500601623CE01998d0s1 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0                      :b,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t500601623CE01998d0s2 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0                      :c,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t500601623CE01998d0s3 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0                      :d,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t500601623CE01998d0s4 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0                      :e,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t500601623CE01998d0s5 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0                      :f,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t500601623CE01998d0s6 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0                      :g,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t500601623CE01998d0s7 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w500601623ce01998,0                      :h,raw
devfsadm[1365]: verbose: symlink /dev/dsk/c2t5006016A3CE01998d0s0 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0:                      a
devfsadm[1365]: verbose: symlink /dev/dsk/c2t5006016A3CE01998d0s1 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0:                      b
devfsadm[1365]: verbose: symlink /dev/dsk/c2t5006016A3CE01998d0s2 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0:                      c
devfsadm[1365]: verbose: symlink /dev/dsk/c2t5006016A3CE01998d0s3 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0:                      d
devfsadm[1365]: verbose: symlink /dev/dsk/c2t5006016A3CE01998d0s4 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0:                      e
devfsadm[1365]: verbose: symlink /dev/dsk/c2t5006016A3CE01998d0s5 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0:                      f
devfsadm[1365]: verbose: symlink /dev/dsk/c2t5006016A3CE01998d0s6 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0:                      g
devfsadm[1365]: verbose: symlink /dev/dsk/c2t5006016A3CE01998d0s7 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0:                      h
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t5006016A3CE01998d0s0 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0                      :a,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t5006016A3CE01998d0s1 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0                      :b,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t5006016A3CE01998d0s2 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0                      :c,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t5006016A3CE01998d0s3 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0                      :d,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t5006016A3CE01998d0s4 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0                      :e,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t5006016A3CE01998d0s5 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0                      :f,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t5006016A3CE01998d0s6 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0                      :g,raw
devfsadm[1365]: verbose: symlink /dev/rdsk/c2t5006016A3CE01998d0s7 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0/ssd@w5006016a3ce01998,0                      :h,raw

---------- Post updated at 08:09 AM ---------- Previous update was at 08:08 AM ----------

So, the driver that providing the 'ssd' support appears to be stuck in a loop where it's refusing to let go of the old references??
# 4  
Old 04-30-2013
As per my post, you need to remove from /dev/cfg too.

You need to remove the device node from all three directories.

You may need to use 'rm -f' if it won't go.
This User Gave Thanks to hicksd8 For This Post:
# 5  
Old 04-30-2013
under /dev/cfg I have the following

Code:
bash-3.2# ls
c0  c1  c2
bash-3.2# cat c2
cat: input error on c2: No such device or address
bash-3.2# cd c2
bash: cd: c2: Not a directory

I have other LUNS off of c2 that I don't want to lose. How do I go about removing that reference since c2 isn't a file I can edit??

---------- Post updated at 08:13 AM ---------- Previous update was at 08:12 AM ----------

Code:
bash-3.2# ls -l /dev/cfg
total 3
lrwxrwxrwx   1 root     root          45 Nov 30  2010 c0 -> ../../devices/pci@7c0/pci@0/pci@8/scsi@2:scsi
lrwxrwxrwx   1 root     root          42 Apr  5  2011 c1 -> ../../devices/pci@780/SUNW,qlc@0/fp@0,0:fc
lrwxrwxrwx   1 root     root          44 Apr  5  2011 c2 -> ../../devices/pci@780/SUNW,qlc@0,1/fp@0,0:fc

# 6  
Old 04-30-2013
If you have other LUN's on c2 then you'll need to (in single user)

Code:
rm -r /a/dev/cfg/c2

then

Code:
devfsadm -r /a -p /a/etc/path_to_inst

to write the devices you still need back.

Remember to check that /a/etc/vfstab is correct and not trying to mount something which isn't there any more.
This User Gave Thanks to hicksd8 For This Post:
# 7  
Old 04-30-2013
I'm trying a modified version of this.

rm /dev/dsk/<path>
rm /dev/rdsk/<path>
rm /dev/cfg/c2
devfsadm -r /a -p /etc/path_to_inst
reboot -- -r
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