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Subject: RE: Rebuild DMIP from volumes alone?
Date: Fri, 28 Sep 2007 15:25:03 -0800
Message-ID: <BB375AF679D4A34E9CA8DFA650E2B04E03AEAD77@onstor-exch02.onstor.net>
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Thread-Topic: Rebuild DMIP from volumes alone?
Thread-Index: AcgCHlJrDY3lQSR+Spu55RlQjFzjiQAANZJQAACVphAAADiBQAAAS3hgAACoSmA=
From: "Danqing Jin" <danqing.jin@onstor.com>
To: "Ranga Nathan" <ranga.nathan@onstor.com>,
	"Tim Gardner" <tim.gardner@onstor.com>,
	"Eric Barrett" <eric.barrett@onstor.com>,
	"Paul Hammer" <paul.hammer@onstor.com>,
	"Rich LaReau" <rich.lareau@onstor.com>,
	"dl-cstech" <dl-cstech@onstor.com>,
	"John Culp" <john.culp@onstor.com>

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Thanks Ranga,

I think you caught the missing piece of the puzzle, i.e., they rebooted
the remote filer using the secondarly flash.  Was secondary flash loaded
with 2.2.2.9 or 3.0.0.4 which has Mike's fix, at the time?

Thanks,
-Danqing-

> _____________________________________________=20
> From: 	Ranga Nathan =20
> Sent:	Friday, September 28, 2007 4:16 PM
> To:	Tim Gardner; Eric Barrett; Paul Hammer; Rich LaReau; dl-cstech;
> John Culp
> Subject:	RE: Rebuild DMIP from volumes alone?
>=20
> It appears that we had a successful incremental mirror completed on
> the 26th. Something happened on the 27th that caused the CF cards to
> go bad and when we brought the  remote filer up using the secondary
> flash card, the system indicated that a baseline transfer was required
> for all volumes.
>=20
> Sep 28 09:16:27 cv-onstor3 : 1:2:efs:INFO: 24: FS: onstor_asigra_rep3
> 0x4c50000008a - mount - mirror - FS AM TARGET: gennum mismatched snap
> 9 gen 136 (vs 137)
>  -> will be removed
>=20
> Sep 28 09:16:31 cv-onstor3 : 1:2:efs:ERROR: 40: FS:
> 0x4c50000008a - mount - mirror - Mirror volume onstor_asigra_rep3 has
> no valid snapshot to us
> e.  It needs a new baseline transfer.
>=20
> Sep 28 09:16:29 cv-onstor3 : 1:3:efs:INFO: 36: FS: onstor_asigra_rep1
> 0x4c500000085 - mount - mirror - FS AM TARGET: gennum mismatched snap
> 9 gen 235 (vs 236)
>  -> will be removed
>=20
> Sep 28 09:16:33 cv-onstor3 : 1:3:efs:ERROR: 42: FS:
> 0x4c500000085 - mount - mirror - Mirror volume onstor_asigra_rep1 has
> no valid snapshot to us
> e.  It needs a new baseline transfer.
>=20
>=20
> Ranga Nathan=20
> Customer Support 		Direct: 408 963 2493
>=20
> ONStor US Support:=20
> Phone: 1-866-726-3453            E-mail: support@ONStor.com
>=20
>  << OLE Object: Picture (Metafile) >>  254 E Hacienda Ave, Campbell,
> CA 95008
>=20
>=20
> _____________________________________________=20
> From: 	Tim Gardner =20
> Sent:	Friday, September 28, 2007 3:56 PM
> To:	Eric Barrett; Paul Hammer; Rich LaReau; dl-cstech; John Culp
> Subject:	RE: Rebuild DMIP from volumes alone?
>=20
> If you are starting from a fresh cluster DB you will first have to
> import the volume as a mirror target.
> You can then to the mirror create specifying the target volume name so
> that a new volume is not created.
> This procedure is documented in the SAG. Look in the section about
> using data mirror to create a baseline and then
> moving the volume to a remote cluster and setting up a DMIP mirror.
>=20
> _____________________________________________
> From: Eric Barrett=20
> Sent: Friday, September 28, 2007 3:48 PM
> To: Paul Hammer; Rich LaReau; dl-cstech
> Cc: John Culp
> Subject: RE: Rebuild DMIP from volumes alone?
>=20
> You shouldn't need the clusterDB, just do a mirror create.  On the
> first mirror start, if it's possible to resync, it will do so instead
> of a baseline.
>=20
>=20
>=20
> _____________________________________________=20
> From: 	Paul Hammer =20
> Sent:	Friday, September 28, 2007 3:31 PM
> To:	Rich LaReau; dl-cstech
> Cc:	John Culp
> Subject:	RE: Rebuild DMIP from volumes alone?
>=20
>=20
> Not sure what happened here, but if they are or EMRS isn't the
> clusterDB uploaded ?
> _____________________________________________
> From: Rich LaReau=20
> Sent: Friday, September 28, 2007 3:24 PM
> To: dl-cstech
> Cc: John Culp
> Subject: Rebuild DMIP from volumes alone?
>=20
>=20
> We have a case where the "remote" filer in a DMIP mirror has been
> pretty much hosed.  No surviving database.  Is it possible to rebuild
> the mirrors using a brand new config and the old volumes?  That is, do
> the volumes contain enough "state" information that it can be
> recovered in a new filer installation?
>=20
> Thanks!
> Rich
>=20

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<!-- Converted from text/rtf format -->

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">Thanks Ranga,</FONT>
</P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">I think you caught =
the missing piece of the puzzle, i.e., they rebooted the remote filer =
using the secondarly flash.&nbsp; Was secondary flash loaded with =
2.2.2.9 or 3.0.0.4 which has Mike's fix, at the time?</FONT></P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">Thanks,</FONT>

<BR><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">-Danqing-</FONT>
</P>

<P><FONT SIZE=3D1 =
FACE=3D"Tahoma">_____________________________________________ </FONT>

<BR><B><FONT SIZE=3D1 FACE=3D"Tahoma">From: &nbsp;</FONT></B> <FONT =
SIZE=3D1 FACE=3D"Tahoma">Ranga Nathan&nbsp; </FONT>

<BR><B><FONT SIZE=3D1 FACE=3D"Tahoma">Sent:&nbsp;&nbsp;</FONT></B> <FONT =
SIZE=3D1 FACE=3D"Tahoma">Friday, September 28, 2007 4:16 PM</FONT>

<BR><B><FONT SIZE=3D1 =
FACE=3D"Tahoma">To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT SIZE=3D1 =
FACE=3D"Tahoma">Tim Gardner; Eric Barrett; Paul Hammer; Rich LaReau; =
dl-cstech; John Culp</FONT>

<BR><B><FONT SIZE=3D1 =
FACE=3D"Tahoma">Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT>=
</B> <FONT SIZE=3D1 FACE=3D"Tahoma">RE: Rebuild DMIP from volumes =
alone?</FONT>
</P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">It appears that we =
had a successful incremental mirror completed on the 26th. Something =
happened on the 27th that caused the CF cards to go bad and when we =
brought the&nbsp; remote filer up using the secondary flash card, the =
system indicated that a baseline transfer was required for all =
volumes.</FONT></P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">Sep 28 09:16:27 =
cv-onstor3 : 1:2:efs:INFO: 24: FS: onstor_asigra_rep3 0x4c50000008a - =
mount - mirror - FS AM TARGET: gennum mismatched snap 9 gen 136 (vs =
137)</FONT></P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">&nbsp;-&gt; will be =
removed</FONT>
</P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">Sep 28 09:16:31 =
cv-onstor3 : 1:2:efs:ERROR: 40: =
FS:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; 0x4c50000008a - mount - mirror - Mirror volume =
onstor_asigra_rep3 has no valid snapshot to us</FONT></P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">e.&nbsp; It needs a =
new baseline transfer.</FONT>
</P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">Sep 28 09:16:29 =
cv-onstor3 : 1:3:efs:INFO: 36: FS: onstor_asigra_rep1 0x4c500000085 - =
mount - mirror - FS AM TARGET: gennum mismatched snap 9 gen 235 (vs =
236)</FONT></P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">&nbsp;-&gt; will be =
removed</FONT>
</P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">Sep 28 09:16:33 =
cv-onstor3 : 1:3:efs:ERROR: 42: =
FS:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbs=
p;&nbsp; 0x4c500000085 - mount - mirror - Mirror volume =
onstor_asigra_rep1 has no valid snapshot to us</FONT></P>

<P><FONT COLOR=3D"#0000FF" SIZE=3D2 FACE=3D"Arial">e.&nbsp; It needs a =
new baseline transfer.</FONT>
</P>
<BR>

<P><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">Ranga Nathan </FONT>

<BR><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">Customer Support =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Direct: 408 963 2493</FONT>
</P>

<P><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">ONStor US Support: =
</FONT>

<BR><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">Phone: =
1-866-726-3453&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp; E-mail: </FONT><A HREF=3D"mailto:support@ONStor.com"><U><FONT =
COLOR=3D"#0000FF" SIZE=3D2 =
FACE=3D"Arial">support@ONStor.com</FONT></U></A>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">&nbsp;&lt;&lt; OLE Object: Picture =
(Metafile) &gt;&gt;</FONT>&nbsp;<FONT SIZE=3D2 FACE=3D"Arial"><SUP> 254 =
E Hacienda Ave, Campbell, CA 95008</SUP></FONT>
</P>
<BR>

<P><FONT SIZE=3D1 =
FACE=3D"Tahoma">_____________________________________________ </FONT>

<BR><B><FONT SIZE=3D1 FACE=3D"Tahoma">From: &nbsp;</FONT></B> <FONT =
SIZE=3D1 FACE=3D"Tahoma">Tim Gardner&nbsp; </FONT>

<BR><B><FONT SIZE=3D1 FACE=3D"Tahoma">Sent:&nbsp;&nbsp;</FONT></B> <FONT =
SIZE=3D1 FACE=3D"Tahoma">Friday, September 28, 2007 3:56 PM</FONT>

<BR><B><FONT SIZE=3D1 =
FACE=3D"Tahoma">To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT SIZE=3D1 =
FACE=3D"Tahoma">Eric Barrett; Paul Hammer; Rich LaReau; dl-cstech; John =
Culp</FONT>

<BR><B><FONT SIZE=3D1 =
FACE=3D"Tahoma">Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT>=
</B> <FONT SIZE=3D1 FACE=3D"Tahoma">RE: Rebuild DMIP from volumes =
alone?</FONT>
</P>

<P><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">If you are starting =
from a fresh cluster DB you will first have to import the volume as a =
mirror target.</FONT>

<BR><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">You can then to the =
mirror create specifying the target volume name so that a new volume is =
not created.</FONT>

<BR><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">This procedure is =
documented in the SAG. Look in the section about using data mirror to =
create a baseline and then</FONT>

<BR><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">moving the volume to =
a remote cluster and setting up a DMIP mirror.</FONT>
</P>

<P><FONT SIZE=3D2 =
FACE=3D"Tahoma">_____________________________________________<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">From:</FONT></B><FONT SIZE=3D2 =
FACE=3D"Tahoma"> Eric Barrett<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">Sent:</FONT></B><FONT SIZE=3D2 =
FACE=3D"Tahoma"> Friday, September 28, 2007 3:48 PM<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">To:</FONT></B><FONT SIZE=3D2 =
FACE=3D"Tahoma"> Paul Hammer; Rich LaReau; dl-cstech<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">Cc:</FONT></B><FONT SIZE=3D2 =
FACE=3D"Tahoma"> John Culp<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">Subject:</FONT></B><FONT =
SIZE=3D2 FACE=3D"Tahoma"> RE: Rebuild DMIP from volumes alone?</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">You shouldn't need the clusterDB, just =
do a mirror create.&nbsp; On the first mirror start, if it's possible to =
resync, it will do so instead of a baseline.</FONT></P>
<BR>
<BR>

<P><FONT SIZE=3D1 =
FACE=3D"Tahoma">_____________________________________________ </FONT>

<BR><B><FONT SIZE=3D1 FACE=3D"Tahoma">From: &nbsp;</FONT></B> <FONT =
SIZE=3D1 FACE=3D"Tahoma">Paul Hammer&nbsp; </FONT>

<BR><B><FONT SIZE=3D1 FACE=3D"Tahoma">Sent:&nbsp;&nbsp;</FONT></B> <FONT =
SIZE=3D1 FACE=3D"Tahoma">Friday, September 28, 2007 3:31 PM</FONT>

<BR><B><FONT SIZE=3D1 =
FACE=3D"Tahoma">To:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT SIZE=3D1 =
FACE=3D"Tahoma">Rich LaReau; dl-cstech</FONT>

<BR><B><FONT SIZE=3D1 =
FACE=3D"Tahoma">Cc:&nbsp;&nbsp;&nbsp;&nbsp;</FONT></B> <FONT SIZE=3D1 =
FACE=3D"Tahoma">John Culp</FONT>

<BR><B><FONT SIZE=3D1 =
FACE=3D"Tahoma">Subject:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT>=
</B> <FONT SIZE=3D1 FACE=3D"Tahoma">RE: Rebuild DMIP from volumes =
alone?</FONT>
</P>
<BR>

<P><FONT COLOR=3D"#000080" SIZE=3D2 FACE=3D"Arial">Not sure what =
happened here, but if they are or EMRS isn&#8217;t the clusterDB =
uploaded ?</FONT>

<BR><FONT SIZE=3D2 =
FACE=3D"Tahoma">_____________________________________________<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">From:</FONT></B><FONT SIZE=3D2 =
FACE=3D"Tahoma"> Rich LaReau<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">Sent:</FONT></B><FONT SIZE=3D2 =
FACE=3D"Tahoma"> Friday, September 28, 2007 3:24 PM<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">To:</FONT></B><FONT SIZE=3D2 =
FACE=3D"Tahoma"> dl-cstech<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">Cc:</FONT></B><FONT SIZE=3D2 =
FACE=3D"Tahoma"> John Culp<BR>
</FONT><B><FONT SIZE=3D2 FACE=3D"Tahoma">Subject:</FONT></B><FONT =
SIZE=3D2 FACE=3D"Tahoma"> Rebuild DMIP from volumes alone?</FONT>
</P>
<BR>

<P><FONT SIZE=3D2 FACE=3D"Arial">We have a case where the =
&quot;remote&quot; filer in a DMIP mirror has been pretty much =
hosed.&nbsp; No surviving database.&nbsp; Is it possible to rebuild the =
mirrors using a brand new config and the old volumes?&nbsp; That is, do =
the volumes contain enough &quot;state&quot; information that it can be =
recovered in a new filer installation?</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">Thanks!</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">Rich</FONT>
</P>

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