Why didn't she panic? (Sol 10 + SVM + HDS) Post: 302257902

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Operating Systems Solaris Why didn't she panic? (Sol 10 + SVM + HDS) Post 302257902 by MikaBaghinen on Thursday 13th of November 2008 10:22:53 AM

11-13-2008

Registered User

Why didn't she panic? (Sol 10 + SVM + HDS)

Hi folks,

the following incident occured today:

by mistake one of our renowned administrators deleted the complete zoning for a 25K domain running solaris 10.

Thus the system lost all of it's external disks.

We've got oracle datafiles and oracle software residing on those lost disks.

The system logged read and write errors to /var/adm/messages. But it did not panic, because the write errors were qualified "retryable".

The external disks were mounted as metadevices in metasets.

Does SVM keep the system from panicing?

Background information:

uname -a:
SunOS <servername> 5.10 Generic_127111-11 sun4u sparc SUNW,Sun-Fire-15000

cat /etc/release:
Solaris 10 8/07 s10s_u4wos_12b SPARC
Copyright 2007 Sun Microsystems, Inc. All Rights Reserved.
Use is subject to license terms.
Assembled 16 August 2007

/var/adm/messages:

Nov 13 10:28:47 sv0703 md_stripe: [ID 641072 kern.warning] WARNING: md: 0703m1/d101: write error on /dev/dsk/c6t60060E801526C300000126C300003265d0s0
Nov 13 10:28:47 sv0703 md_stripe: [ID 641072 kern.warning] WARNING: md: 0703m1/d80: write error on /dev/dsk/c6t60060E801526C300000126C300002265d0s0
Nov 13 10:28:47 sv0703 md_sp: [ID 641072 kern.warning] WARNING: md: 0703m1/d101: write error on /dev/md/0703m1/dsk/d90
Nov 13 10:56:09 sv0703 Error for Command: write(10) Error Level: Retryable
...and so on...

df -h /u02:
/dev/md/<metasetname>/dsk/d100 103G 85G 17G 83% /u02

metaset -s <metasetname>
Set name = <metasetname>, Set number = 4
Host Owner
<hostname> Yes (auto)
Drive Dbase
/dev/dsk/c6t60060E801526C300000126C3000022A2d0 Yes
/dev/dsk/c6t60060E801526C300000126C3000032A2d0 Yes
/dev/dsk/c6t50060E80000000000000F8FE000000A2d0 Yes
/dev/dsk/c6t50060E80000000000000F8FE000004A2d0 Yes

For each FS we've got:

submirror-> mirror-> soft partition on metaset

Thanks & Regards

Mika

###

MikaBaghinen

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install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)