DiskSuite 4.0

DiskSuite 4.0

Post by Nicholas Heeste » Thu, 19 Oct 1995 04:00:00



Does anybody have any experience (good or bad) with
implementing a RAID 5 system via Sun's DiskSuite 4.0
software?  I'm thinking of setting this up for our
NFS server running Solaris 2.3 and was just wondering
if there were any large bugs or potential "gothcas".

Thanks,
Nick Heesters

 
 
 

DiskSuite 4.0

Post by Burt Gedne » Thu, 19 Oct 1995 04:00:00



>Does anybody have any experience (good or bad) with
>implementing a RAID 5 system via Sun's DiskSuite 4.0
>software?  I'm thinking of setting this up for our
>NFS server running Solaris 2.3 and was just wondering
>if there were any large bugs or potential "gothcas".

>Thanks,
>Nick Heesters

Disksuite 4.0 is not much more than a GUI on top of the older
versions of ODS.  Disksuite at its best has never been a
really good answer to RAID solutions, especially when
compared to a robust and well-tested product like the Veritas
Volume Manager software.  I've had to use ODS in sites that
could/would not afford the disk array and software and we
had to make-do with ODS.  I've also not had a lot of luck
getting a failed RAID5 volume to recover properly.

For basic striping and filesystem concatenation it does OK.
However, most of the premier database companies sneer at
ODS as a method to provide them with a striped/mirrored/raid5
raw volume.  Veritas they love.  Good luck.

--
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things  \\
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DiskSuite 4.0

Post by Richard P. Baint » Fri, 20 Oct 1995 04:00:00




Quote:>Disksuite 4.0 is not much more than a GUI on top of the older
>versions of ODS.

That's right from all I've heard.

Quote:>Disksuite at its best has never been a
>really good answer to RAID solutions,

Hmm. We've done stripping, mirroring and concatinating without any
problems, and similar performance to the Veritas product. I have not
done RAID5 with either.

Quote:>especially when
>compared to a robust and well-tested product like the Veritas
>Volume Manager software.

And when will they support Journalling File System? This is something
that would be wonderful for a site that has 164G of diskspace. The
`fsck`ing after a crash takes forever. (I'm sorry, I don't trust the
preen option yet, especially since I've been bit by the filesystem not
being clean enough afterwards.)

Btw, Sun Tech support recommends *not* using ODS and Volume Manager at
the same time. So using the *one* feature from ODS I want won't work. As
well, how long will Sun continue to support VM as opposed to ODS? I
don't wanna be left high and dry because they decided it wasn't the
product they wanted to push as their Enterprise disk solution.

Ciao,

--
Richard Bainter          Mundanely     |    System Analyst        - OMG/CSD
Pug                      Generally     |    Applied Research Labs - U.Texas

Note: The views may not reflect my employers, or even my own for that matter.

 
 
 

DiskSuite 4.0

Post by Richard P. Baint » Tue, 24 Oct 1995 04:00:00



Quote:>> And when will they support Journalling File System? This is something
>It's in ODS 4.0.  I have shadowed logs to speed up fscking a RAID5
>array.

I must not have been udnerstood. I want it in the OS and not in add on
software. It's in ODS 4.0 and as I've been pointed out over the weekend,
in VxFS which is the compainion software for VxVM.

Ciao,

--
Richard Bainter          Mundanely     |    System Analyst        - OMG/CSD
Pug                      Generally     |    Applied Research Labs - U.Texas

Note: The views may not reflect my employers, or even my own for that matter.

 
 
 

DiskSuite 4.0

Post by King Chung » Tue, 24 Oct 1995 04:00:00





: > And when will they support Journalling File System? This is something

: It's in ODS 4.0.  I have shadowed logs to speed up fscking a RAID5
: array.

: $ /usr/opt/SUNWmd/sbin/metastat d41
: d41: Trans
:     State: Okay        
:     Size: 5939136 blocks
:     Master Device: d40
:     Logging Device: d6

: d40: RAID
:     State: Okay        
:     Interlace: 64 blocks
:     Size: 5939136 blocks
: Original device:
:     Size: 5940096 blocks
:       Device              Start Block  Dbase State        Hot Spare
:       c1t3d0s6                 650     No    Okay        
:       c1t4d0s6                 650     No    Okay        
:       c2t3d0s6                 650     No    Okay        
:       c2t4d0s6                 650     No    Okay        

: d6: Logging device for d41
:     State: Okay        
:     Size: 65270 blocks

So, it is now possible to do logging with partitions > 2GB under DiskSuite
4.0? I think the manual for 3.0 says that 2GB is the largest that you can do
logging on.

Please confirm.

Best regards,

King Ho
Global Link Information Services Ltd.

 
 
 

DiskSuite 4.0

Post by Jyrki Hav » Wed, 25 Oct 1995 04:00:00



Quote:> : Original device:
> :     Size: 5940096 blocks
> :  Device              Start Block  Dbase State        Hot Spare
> :  c1t3d0s6                 650     No    Okay        
> :  c1t4d0s6                 650     No    Okay        
> :  c2t3d0s6                 650     No    Okay        
> :  c2t4d0s6                 650     No    Okay        
> : d6: Logging device for d41
> :     State: Okay        
> :     Size: 65270 blocks
> So, it is now possible to do logging with partitions > 2GB under DiskSuite
> 4.0? I think the manual for 3.0 says that 2GB is the largest that you can do
> logging on.

        No, manual says, that LOGGIN DEVICE can not be larger than 2GB (I can't
        find it where it states that, but it is WERY badly worded).

        Anyway:

oravannahka# df -k /var/spool/news
Filesystem            kbytes    used   avail capacity  Mounted on
/dev/md/dsk/d0       8046892 6941020  301187    96%    /var/spool/news
oravannahka# /usr/opt/SUNWmd/sbin/metastat
d0: metatrans
    State: Okay
    Size: 16755984 blocks
    Master Device: d11
    Logging Device: d10

d11:
    Size: 16755984 blocks
    Stripe 0: (interlace : 2268 blocks)
        Device              Start Block  Dbase State        Hot Spare
        /dev/dsk/c0t0d0s6          0     No    Okay        
        /dev/dsk/c0t5d0s6          0     No    Okay        

d10: Logging device for d0
    State: Okay
    Size: 128254 blocks

--

University of Helsinki, Computing Centre
HUOM: Kaverit hei, l?hett?k?? ty?posti rootille, kiitos!

 
 
 

1. 2.5.1 -> 2.6 & DiskSuite [Was: Solaris 2.6 & Solstice DiskSuite 4.0]

Could someone please clarify this.  I have a UE2 running 2.5.1 and wish
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avoid having to backup and reconfigure these meta-devices.  Is this
possible?  How do I go about upgrading disksuite before hand, and what
does this accomplish?  Thanks for your help.

Chris.

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