RAID5
hwlyo
a new SCSI Hard drive on my SCO 5.0.7 (a 5th SCSI disk)
I know now that I have 5 disks at the beggining I had 3 hard disks on a
RAID5, now I have a 4th disk added to the RAID5, and the 5th outside of
the RAID, the disk number 4 (inside of the RAID) SCO can not see it.
What shall I do to make SCO read the new part of the RAID (I am using
RAID5)
I read http://aplawrence.com/Unixart/moredisk.html but I can only add a
new hard disk but I need on a RAID5 for redundancy...
These are the disks I have, but I am a bit confused because I had taken
the 5th hard disk out to be sure that I am going to format the right
hard disk, and I had the same information that is shown below.
What I want to do is make the /root partition twice bigger...
Thanks for your help...
# hwconfig | grep Sdsk
name=Sdsk vec=- dma=- cyls=17750 hds=255 secs=63 unit=0 fts=sdb
name=Sdsk-0 vec=- dma=- Vnd=MEGA 1 Prd=LOGICAL DRIVE 0 Rev=
name=Sdsk vec=- dma=- cyls=17750 hds=255 secs=63 unit=1 fts=stdb
name=Sdsk-1 vec=- dma=- Vnd=MAXTOR Prd=ATLAS15K_73SCA Rev=DTA0
# divvy -P -N /dev/hd00
0 0 30719 boot EAFS
1 30720 2651135 swap NON FS
2 2651136 142560799 root HTFS
6 142560800 142560809 recover NON FS
7 0 142568810 hd0a WHOLE DISK
# divvy -P -N /dev/hd0a
0 0 30719 boot EAFS
1 30720 2651135 swap NON FS
2 2651136 142560799 root HTFS
6 142560800 142560809 recover NON FS
7 0 142568810 hd0a WHOLE DISK
# divvy -P -N /dev/hd01
0 0 30719 - EAFS
1 30720 2651135 - NON FS
2 2651136 142560799 - HTFS
6 142560800 142560809 - NON FS
7 0 142568810 hd01 WHOLE DISK
# divvy -P -N /dev/hd11
0 0 30719 - NON FS
1 30720 2651135 - NON FS
2 2651136 142560799 - NON FS
6 142560800 142560809 - NON FS
7 0 142568810 hd11 WHOLE DISK
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- Show quoted text -
Scott McMillan wrote:
> On 19 Sep 2006 04:54:37 -0700, "hwlyo" <hul...@gmail.com> wrote:
> >I had tried to find out how the SCSI arrange disks are in the SCO
> >5.0.7, but I can't find the solution.
> >I tried "df" command but it just gives me the file systems that are
> >mounted.
> >I also tried "df /dev/hd* " and "df /dev/hd* " but the result is:
> >df -k /dev/hd*
> >Filesystem 1K-blocks Used Available Use% Mounted on
> >/dev/root 139909664 117870041 22039623 85% /
> >/dev/root 139909664 117870041 22039623 85% /
> >.
> >.
> >.
> >df -k /dev/hd* ¦ wc -l
> >29
> >......so 28 hard disks, but I have 4 or 5 SCSI on the SCO computer.
> >Do you have a solution?
> >I want to know where is / mounted and how can I add a New SCSI Hard
> >Disk
> >Thanks
> To help determine disks in your system:
> 1) hwconfig should show you how many disks are configured (if they are
> all SCSI, try 'hwconfig | grep Sdsk').
> NOTE: This gives you the disks configured within the OS, not the
> physical number of disks in the box.
> ALSO NOTE: if the disks are attached to a RAID controller, this will
> only report the number of *logical disks* configured within the OS.
> You will need to use your RAID controller's utilities to determine the
> number of disks it is offering to the OS (this should also tell you
> how many *physical disks* are attached, and how the logical disks are
> configured).
> 2) Try running 'sconf -v'. See "ALSO NOTE" above as it applies here.
> And to add hard disks:
> http://wdb1.sco.com/kb/showta?taid=109379&qid=1071176901&sid=17061481...
> http://aplawrence.com/Unixart/newdisk.html
> Scott McMillan
Steve M. Fabac, Jr.
>
> After reading trying different thinks, I had installed
> a new SCSI Hard drive on my SCO 5.0.7 (a 5th SCSI disk)
>
> I know now that I have 5 disks at the beggining I had 3 hard disks on a
> RAID5, now I have a 4th disk added to the RAID5, and the 5th outside of
> the RAID, the disk number 4 (inside of the RAID) SCO can not see it.
> What shall I do to make SCO read the new part of the RAID (I am using
> RAID5)
Hwlyo,
None of the RAID controllers I know of can dynamically expand an existing RAID 5
array under SCO OpenServer (any version).
If you want all 5 disks in your RAID, you must backup your system, delete
the existing RAID 5 array and then create a new, empty RAID 5 array with
all 5 disks then restore your full system backup.
The only other option is to use disk 4 and disk 5 and create a separate
mirror (RAID 1) array and then move some major sub directory to the new
mirrored array, delete the files in the moved sub directory and then
mount the mirrored array on the old sub directory.
If you don't have one of the super tar backup programs, then you should
download and install one of them (in full function demo mode) and use
the super tar facility to generate "Emergency Recovery" boot/file system
utilities and a full system backup. You can then safely delete the old
RAID 5 array and then create a new RAID 5 array using all 5 disks.
Once you use the super tar to restore your system and you see how easy it
is to recover your data, you are likely to want to never be without it.
That's why they let you try it free for 30-60 days. ;-)
--
Steve Fabac
S.M. Fabac & Associates
816/765-1670
hwlyo
The "super tar" option sounds great!!! but
1.- Are you 100% sure I will get all my configurations back, this box
contains quite complicated settings.
2.- Where can I download the Super tar? I cant find it...
Thank you.
Julio
Bob Bailin
"hwlyo" <hul...@gmail.com> wrote in message
news:1160381133....@b28g2000cwb.googlegroups.com...
Thank you Steve,
Thank you.
Julio
> > > >df -k /dev/hd* Ś wc -l
Pat Welch
>>> 29
>>> ......so 28 hard disks, but I have 4 or 5 SCSI on the SCO computer.
>
>>> Do you have a solution?
>
>>> I want to know where is / mounted and how can I add a New SCSI Hard
>>> Disk
>
>>> Thanks
>
>> To help determine disks in your system:
>
>> 1) hwconfig should show you how many disks are configured (if they are
>> all SCSI, try 'hwconfig | grep Sdsk').
>
>> NOTE: This gives you the disks configured within the OS, not the
>> physical number of disks in the box.
>
>> ALSO NOTE: if the disks are attached to a RAID controller, this will
>> only report the number of *logical disks* configured within the OS.
>> You will need to use your RAID controller's utilities to determine the
>> number of disks it is offering to the OS (this should also tell you
>> how many *physical disks* are attached, and how the logical disks are
>> configured).
>
>> 2) Try running 'sconf -v'. See "ALSO NOTE" above as it applies here.
>
>> And to add hard disks:
>
>> http://wdb1.sco.com/kb/showta?taid=109379&qid=1071176901&sid=17061481...
>> http://aplawrence.com/Unixart/newdisk.html
>
>> Scott McMillan
>
If you have hardware RAID5, then use the Raid controllers built in tools
to add the 5th disk or mark it as a hot spare.
Usually you get access from the RAID controller's BIOS - look for
messages about what key to use during bootup. HP's Smartarray uses F8 to
get access for example.
With hardware RAID SCO just sees 1 large hard disk and has no knowledge
of the underlying mechanics.
However, the advice about using a Supertar to generate emergency boot CD
or disks and backup prior to adding the 5th disk is a good idea. Murphy
is out there waiting ya know :)
--
----------------------------------------------------
Pat Welch, UBB Computer Services, a WCS Affiliate
SCO Authorized Partner
Unix/Linux/Windows/Hardware Sales/Support
(209) 745-1401 Cell: (209) 251-9120
E-mail: pat...@inreach.com
----------------------------------------------------