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

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