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IDS Forum

Re: Backup/Restore Primary/HDR

Posted By: Informix DBA
Date: Tuesday, 19 July 2016, at 12:23 p.m.

In Response To: Re: Backup/Restore Primary/HDR (Andreas Legner)

Hi,

Thank You. Yes I am familiar with the doc you mentioned. Yes we do the
imported/redirected restore all the time leveraging the INFXBSA_CLIENT env
variable.

From my testing it seems the issue here is related to the primary server
name being "tst" and the HDR (new primary) server being called "stg". When
onbar backs up the logs it uses the name of the server to mark the backup
image (first field in the ixbar file see snippet below).

ixbar file snippet:
stg 51 L 0 60 0 1 1468532854 2016-07-14 17:47:48
stg 52 L 0 61 0 1 1468532903 2016-07-14 17:48:37
tst 53 L 0 62 0 1 1468597115 2016-07-15 11:38:49
tst 54 L 0 63 0 1 1468597148 2016-07-15 11:39:17

So the restore starts good and restores all the logs from the "stg"
server. However, onbar stops with the following error once it tries to
restore the logs from the "tst" server. I discovered after the log restore
fails I can trick onbar and delete all the "stg" entries and restart the
log restore, though I am hoping there is a more elegant way to achieve
this. Is there perhaps a config setting or env variable to set to force
this entry in the ixbar file regardless of which server actually does the
backup? Or other solution?

netbackup error:
09:38:28 (8357970.xxx) /stg/2/53 -s 07/15/2016 11:38:35 -e 07/15/2016
11:38:35 - no files matched in the given date range

bar_act.log error
-----------------
2016-07-19 09:38:29 9308 9297 XBSA Error: (BSAGetObject) A system error
occurred. Aborting XBSA session.
2016-07-19 09:38:29 9308 9297 Object information: bar_objdesc

obj_id 0 obj_name '53' obj_type 'L' act_id 0 act_type 3 act_status 0

act_start '2016-07-19 09:38:27' act_end '2016-07-15 11:38:49'

ins_time 0 rsam_time 0 seal_time 1468597114 prev_seal_time 1468532901
level 0 copyid hi:lo 1:1468597115 req_act_id 62

logstream 0 est_pages hi:lo 0:0 first_log 0 chpt_log 53 last_log 0

partial_flag 0 do_query 0 ins_sm_id 0 ins_sm_name ''

ins_verify 0 ins_verify_date '' restore order 0:0

objInfo ''

retry 0 in_catalog 1 in_bootfile 0 child_pid 0 child_state 0

bkup_host '' backup_order 0
2016-07-19 09:38:29 9308 9297 If doing an imported restore, and if the
value of SERVERNUM parameter in
ONCONFIG file of the current database server is different from that of the
source database server, try setting IFX_SERVERNUM environment variable
to the source SERVERNUM value prior to re-starting log restore.
2016-07-19 09:38:29 9308 9297 (-43168) ON-Bar suspended the logical
restore on log 53 (expected to
restore to 2147483647).
2016-07-19 09:38:29 9308 9297 /usr/informix/bin/onbar_d complete,
returning 131 (0x83)

Thank You,

--Dave

On Mon, Jul 18, 2016 at 12:24 PM, Andreas Legner <andreas.legner@de.ibm.com>
wrote:

> Have you consulted Symantec's NetBackup for Informix Admin Guide?
> (google=20
> "netbackup informix guide")
>
> I think the important chapter for you is "Redirecting an Informix
> restore=20
> to a different client" ('client' is the database server here).
> We call this "imported restore" ... each storage manager has its own set=20
> of rules to follow in this case, but it's a fully valid and supported=20
> scenario.
>
> HTH,
> Andreas
>
> From: "Informix DBA" <in4mixdba@gmail.com>
> To: ids@iiug.org
> Date: 18.07.2016 17:17
> Subject: Re: Backup/Restore Primary/HDR [37443]
> Sent by: ids-bounces@iiug.org
>
> Hi,=20
>
> So I have not gotten this to work yet. Does anyone have any input or=20
> suggestions on how to make it work? We are using onbar with Veritas=20
> Netbackup.=20
>
> We are testing the following:=20
>
> 1) Full backup on the primary and also rolling through and backing up a=20
> few logs on the primary.=20
> 2) Switchover and promote the HDR to primary=20
> 3) Copy over the ixbar file to the new primary and roll through and backup
> =
>
> a few logs on the new primary=20
> 4) Then we are trying to restore from the full backup from orig primary=20
> and restore all the logs on orig primary and hdr server.=20
>
> However, this doesn't work. As you can see from the sample ixbar file=20
> below, the orig primary is called "stg" and the orig hdr is called
> "tst".=20
> We are able to restore the full backup using "onbar -r -p -w". However,=20
> when we run "onbar -r -l" it will restore all the logs from stg 49-52,=20
> though stops when it gets to log # 53 from the "tst" server. Then the=20
> engine goes into quiescent mode and it will not allow it to start
> another=20
> log restore.=20
>
> Sample ixbar file:=20
> -------------------------=20
> stg 48 L 0 56 0 1 1468532739=20
> 2016-07-14 17:45:53 1 0 0 56 0 - - 48=20
> 1468532737 1468532497 0=20
> stg rootdbs R 1 57 0 1 1468532759=20
> 2016-07-14 17:45:57 1 49 1893989 57 0 - - 49=20
> 1468532757 1468532737 27=20
> stg 49 L 0 58 0 1 1468532770=20
> 2016-07-14 17:46:18 1 0 0 58 0 - - 49=20
> 1468532778 1468532737 0=20
> stg 50 L 0 59 0 1 1468532837=20
> 2016-07-14 17:47:27 1 0 0 59 0 - - 50=20
> 1468532835 1468532778 0=20
> stg 51 L 0 60 0 1 1468532854=20
> 2016-07-14 17:47:48 1 0 0 60 0 - - 51=20
> 1468532852 1468532835 0=20
> stg 52 L 0 61 0 1 1468532903=20
> 2016-07-14 17:48:37 1 0 0 61 0 - - 52=20
> 1468532901 1468532852 0=20
> tst 53 L 0 62 0 1 1468597115=20
> 2016-07-15 11:38:49 1 0 0 62 0 - - 53=20
> 1468597114 1468532901 0=20
> tst 54 L 0 63 0 1 1468597148=20
> 2016-07-15 11:39:17 1 0 0 63 0 - - 54=20
> 1468597147 1468597114 0=20
>
> Any suggestions?=20
>
> Thank You,=20
>
> --Dave=20
>
> On Tue, Jul 12, 2016 at 11:54 AM, Informix DBA <in4mixdba@gmail.com>=20
> wrote:=20
>
> > Hi Andreas,=20
> >=20
> > Excellent point and thank you for pointing that out. Yes I will need
> to=20
> > figure out some sort of sync to keep the ixbar file always moved/current
> =
>
> on=20
> > the current primary.=20
> >=20
> > Thank You,=20
> >=20
> > --Dave=20
> >=20
> >=20
> > On Tue, Jul 12, 2016 at 3:30 AM, Andreas Legner=20
> <andreas.legner@de.ibm.com=20
> > > wrote:=20
> >=20
> >> Don't forget to transfer (or otherwise synchronize) ixbar file in
> case=20
> >> you =3D=20
> >>=20
> >> should have to rely on a cold restore from an (onbar) backup still=20
> >> taken=3D20=20
> >> on old primary.=20
> >>=20
> >> Andreas=20
> >>=20
> >> From: "Informix DBA" <in4mixdba@gmail.com>=20
> >> To: ids@iiug.org=20
> >> Date: 11.07.2016 18:47=20
> >> Subject: Re: Backup/Restore Primary/HDR [37422]=20
> >> Sent by: ids-bounces@iiug.org=20
> >>=20
> >> Good to hear that the logs will sync. Of course I will test, just=20
> >> wanted=3D20=20
> >> to make sure I am headed in the right direction.=3D20=20
> >>=20
> >> Yes I understand after the switchover, all onbar/storage manager=20
> >> backups=3D20=20
> >> will need to be done on the new primary.=3D20=20
> >>=20
> >> Thank You,=3D20=20
> >>=20
> >> --Dave=3D20=20
> >>=20
> >> On Mon, Jul 11, 2016 at 12:25 PM, Alexandre Marini <=3D20=20
> >> alexandre@mcsoftware.com.br> wrote:=3D20=20
> >>=20
> >> > Hi, Dave.=3D20=20
> >> >=3D20=20
> >> > Informix HDR do an automatic resync of your logical logs,
> after=3D20=20
> >> promotion=3D20=20
> >> > of a=3D20=20
> >> > new primary node.=3D20=20
> >> >=3D20=20
> >> > You just have to take care about the new primary backups, using onbar
> =
>
> >> +=3D20=20
> >> > your=3D20=20
> >> > SM. Your new primary should be the new source for all your backups=20
> on=3D20=20
> >> > tape/disk, ok?=3D20=20
> >> >=3D20=20
> >> > Hope it helps.=3D20=20
> >> > Regards.=3D20=20
> >> >=3D20=20
> >> > Atenciosamente,=3D20=20
> >> > Alexandre Marini=3D20=20
> >> >=3D20=20
> >> > [=20
> >> http://mcsoftware.com.br/mc=3D5Fconteudo/assinaturas/logoassinatura.png
> ]=3D20=20
> >> > [
>
> http://mcsoftware.com.br/mc=3D5Fconteudo/assinaturas/arquiteturalogo.png]=20
> >> =3D=20
> >>=20
> >> >=3D20=20
> >> >=20
> >>=20
>
> =3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=
> =3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D=20
> >> =3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D5F=3D20=20
> >> > De: ids-bounces@iiug.org <ids-bounces@iiug.org> em nome de
> Informix=20
> >> DBA=3D20=20
> >> > <in4mixdba@gmail.com>=3D20=20
> >> > Enviado: segunda-feira, 11 de julho de 2016 13:13:17=3D20=20
> >> > Para: ids@iiug.org=3D20=20
> >> > Assunto: Backup/Restore Primary/HDR [37417]=3D20=20
> >> >=3D20=20
> >> > Hi,=3D20=20
> >> >=3D20=20
> >> > We are running 11.70.FC7 on Solaris 11. We use onbar for
> informix=3D20=
> =20
> >> > backups. How does backup/restores work when switching from a
> primary=20
> >> to=3D20=20
> >> > HDR (new Primary) server? Do I need to do another full backup
> when=3D2=
> 0=20
>
> >> > promoting an HDR server to Primary or can the logs being backed up=20
> by=3D20=20
> >> the=3D20=20
> >> > HDR by applied to the backup on the previous primary for the purposes
> =
>
> >> of =3D=20
> >>=20
> >> > restores?=3D20=20
> >> >=3D20=20
> >> > Thank you,=3D20=20
> >> >=3D20=20
> >> > --Dave=3D20=20
> >> >=3D20=20
> >> > --089e0115fec2e1ec1305375e6d33=3D20=20
> >> >=3D20=20
> >> >=3D20=20
> >> >=3D20=20
> >> >=3D20=20
> >>=20
> >>=20
>
> ***************************************************************************=
> =3D=20
>
> >> ****=3D20=20
> >>=20
> >> > Forum Note: Use "Reply" to post a response in the discussion=20
> forum.=3D20=20
> >> >=3D20=20
> >> >=3D20=20
> >> >=3D20=20
> >> >=3D20=20
> >>=20
> >>=20
>
> ***************************************************************************=
> =3D=20
>
> >> ****=3D20=20
> >>=20
> >> > Forum Note: Use "Reply" to post a response in the discussion=20
> forum.=3D20=20
> >> >=3D20=20
> >> >=3D20=20
> >>=20
> >> --94eb2c0d7e3aa400d405375ee7e6=3D20=20
> >>=20
> >>=20
> >>=20
>
> ***************************************************************************=
> =3D=20
>
> >> ****=3D20=20
> >>=20
> >> Forum Note: Use "Reply" to post a response in the discussion
> forum.=3D20=
> =20
> >>=20
> >>=20
> >>=20
> >>=20
>
> ***************************************************************************=
> ****=20
>
> >> Forum Note: Use "Reply" to post a response in the discussion forum.=20
> >>=20
> >>=20
> >=20
>
> --001a1145a96ce729d10537ea72ab=20
>
>
> ***************************************************************************=
> ****=20
>
> Forum Note: Use "Reply" to post a response in the discussion forum.=20
>
>
>
> *******************************************************************************
> Forum Note: Use "Reply" to post a response in the discussion forum.
>
>

--001a11443c78fc33920537ff7fa3

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