[Ocfs2-users] Re: OCF2 and LVM
Sunil Mushran
Sunil.Mushran at oracle.com
Tue Oct 9 08:57:59 PDT 2007
While you can copy files directly, using RMAN makes sense.
RMAN backs up only updated blocks and thus is far more
efficient than cp.
Luis Freitas wrote:
>
>
> In OCFSv1 this could only be done with the oracle patched binutils,
> but it should be safe to backup OCFSv2 files directly.
>
> Any input from the developers?
>
> Regards,
> Luis
>
> */Shivaprasad Kambalimath <ShivaprK at herbalife.com>/* wrote:
>
>
>
> We use EMC's BCV for OCFS2 split mirror and it works just fine
> (10.2.0.3
> and RH Linux 4). The only problem is we can't backup to tape directly
> from ocfs2 (we are using legato and I haven't heard of any other third
> party s/w doing this without rman). So, we copy files to ext3, zip
> them
> and then take tape backup.
>
> Thanks,
> Shiva Kambalimath
>
> -----Original Message-----
> From: ocfs2-users-bounces at oss.oracle.com
> [mailto:ocfs2-users-bounces at oss.oracle.com] On Behalf Of
> ocfs2-users-request at oss.oracle.com
> Sent: Monday, October 08, 2007 12:00 PM
> To: ocfs2-users at oss.oracle.com
> Subject: Ocfs2-users Digest, Vol 46, Issue 7
>
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> Today's Topics:
>
> 1. OCF2 and LVM (Riccardo Paganini)
> 2. Re: OCF2 and LVM (Jordi Prats)
> 3. Re: OCF2 and LVM (Alexei_Roudnev)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 08 Oct 2007 12:35:54 +0200
> From: "Riccardo Paganini"
> Subject: [Ocfs2-users] OCF2 and LVM
> To: ocfs2-users at oss.oracle.com
> Message-ID:
> Content-Type: text/plain;charset="iso-8859-1";format="flowed"
>
> Does anybody knows if is there a certified procedure in to
> backup a RAC DB 10.2.0.3 based on OCFS2 ,
> via split mirror or snaphots technology ?
>
>
> Using Linux LVM and OCFS2, does anybody knows if is
> possible to dinamically extend an OCFS filesystem,
> once the underlying LVM Volume has been extended ?
>
> Thanks in advance
> Riccardo Paganini
>
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 08 Oct 2007 20:20:08 +0200
> From: Jordi Prats
> Subject: Re: [Ocfs2-users] OCF2 and LVM
> To: Riccardo Paganini
> Cc: ocfs2-users at oss.oracle.com
> Message-ID: <470A74D8.9090702 at cesca.es>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hi,
> I'm not an expert on oracle, but I don't think using a snapshot is a
> recommended backup solution. You should use data pump or exp
> utilities
> to backup your database.
>
> To extend your fs, tune2fs.ocfs2 requires you to umount it,
> according to
>
> it's man page:
>
> ==
> tunefs.ocfs2 is used to adjust OCFS2 file system parameters on disk.
> In order to prevent data loss, tunefs.ocfs2 will not perform any
> action on the specified device if it is mounted on any node in the
> cluster. This tool requires the O2CB cluster to be online.
> ==
>
> The concrete command should be: tune2fs.ocfs2 -S /dev/LVM_volume
>
> I don't know if there's any way to extend it without umounting it.
>
> If you want to extend your fs without umounting it you should use ASM
> instead of OCFS2.
>
> regards,
> Jordi
>
> Riccardo Paganini wrote:
> > Does anybody knows if is there a certified procedure in to backup a
> RAC
> > DB 10.2.0.3 based on OCFS2 ,
> > via split mirror or snaphots technology ?
> >
> >
> > Using Linux LVM and OCFS2, does anybody knows if is possible to
> > dinamically extend an OCFS filesystem,
> > once the underlying LVM Volume has been extended ?
> >
> > Thanks in advance
> > Riccardo Paganini
> >
> > _______________________________________________
> > Ocfs2-users mailing list
> > Ocfs2-users at oss.oracle.com
> > http://oss.oracle.com/mailman/listinfo/ocfs2-users
> >
> >
>
>
>
> ------------------------------
>
> Message: 3
> Date: Mon, 8 Oct 2007 11:49:29 -0700
> From: "Alexei_Roudnev"
> Subject: Re: [Ocfs2-users] OCF2 and LVM
> To: "Jordi Prats" , "Riccardo Paganini"
>
> Cc: ocfs2-users at oss.oracle.com
> Message-ID: <069101c809db$f5540070$7031a8c0 at exigengroup.com>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
> I dont knoiw any lvm technology which can make a snapshort in
> clustered
> environment, so better forget this idea.
>
> Recommended method to do oracle backups is rman. Any violation of
> this
> brings you into the swamp of possible oracle bugs.
>
>
> ----- Original Message -----
> From: "Jordi Prats"
> To: "Riccardo Paganini"
> Cc:
> Sent: Monday, October 08, 2007 11:20 AM
> Subject: Re: [Ocfs2-users] OCF2 and LVM
>
>
> > Hi,
> > I'm not an expert on oracle, but I don't think using a snapshot
> is a
> > recommended backup solution. You should use data pump or exp
> utilities
> to
> > backup your database.
> >
> > To extend your fs, tune2fs.ocfs2 requires you to umount it,
> according
> to
> > it's man page:
> >
> > ==
> > tunefs.ocfs2 is used to adjust OCFS2 file system parameters on disk.
> In
> > order to prevent data loss, tunefs.ocfs2 will not perform any
> action
> > on the specified device if it is mounted on any node in the cluster.
> This
> > tool requires the O2CB cluster to be online.
> > ==
> >
> > The concrete command should be: tune2fs.ocfs2 -S /dev/LVM_volume
> >
> > I don't know if there's any way to extend it without umounting it.
> >
> > If you want to extend your fs without umounting it you should
> use ASM
> > instead of OCFS2.
> >
> > regards,
> > Jordi
> >
> > Riccardo Paganini wrote:
> >> Does anybody knows if is there a certified procedure in to backup a
> RAC
> >> DB 10.2.0.3 based on OCFS2 ,
> >> via split mirror or snaphots technology ?
> >>
> >>
> >> Using Linux LVM and OCFS2, does anybody knows if is possible to
> >> dinamically extend an OCFS filesystem,
> >> once the underlying LVM Volume has been extended ?
> >>
> >> Thanks in advance
> >> Riccardo Paganini
> >>
> >> _______________________________________________
> >> Ocfs2-users mailing list
> >> Ocfs2-users at oss.oracle.com
> >> http://oss.oracle.com/mailman/listinfo/ocfs2-users
> >>
> >>
> >
> > _______________________________________________
> > Ocfs2-users mailing list
> > Ocfs2-users at oss.oracle.com
> > http://oss.oracle.com/mailman/listinfo/ocfs2-users
> >
>
>
>
>
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