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- From: geo@george.austin.ibm.com (George Noren)
- Newsgroups: comp.unix.aix
- Subject: Re: List of fixes in 3.2.3???
- Message-ID: <1992Nov4.151214.19266@awdprime.austin.ibm.com>
- Date: 4 Nov 92 15:12:14 GMT
- References: <AUVNELE.92Oct27144657@acis11.tamu.edu> <1992Oct28.153435.18100@ils.nwu.edu> <1992Oct29.104036@se05.wg2.waii.com> <1992Nov4.094520.15590@awdprime.austin.ibm.com>
- Sender: news@awdprime.austin.ibm.com (USENET News)
- Organization: IBM AWD Early Systems Support
- Lines: 67
-
- All good information in the following response about quorum, but please
- note that it refers to a feature in "AIX Version 3.2.3 for RISC
- System/6000 Extended Support" which is the version that will be available
- in December (12/25). The version that is available now is
- "AIX Version 3.2.3 for RISC System/6000 Base".
-
- Sincerely,
- George Noren
-
- +-----------------------+----------------------------------+-----------------+
- | AIX | Inet: geo@austin.ibm.com | PH: 512/838-4930|
- | Technical Consulting | VNET: GEORGE at AUSTIN | TL: 678-4930 |
- | IBM Austin - Zip 2830 | AIX : geo@austin.ibm.com | FX: 512/838-4851|
- +-----------------------+----------------------------------+-----------------+
-
-
- In article <1992Nov4.094520.15590@awdprime.austin.ibm.com>, konopik@konopik.austin.ibm.com (Brad Konopik) writes:
- |> In article <1992Oct29.104036@se05.wg2.waii.com> acker@se01.wg2.waii.com writes:
- |> >
- |> >3.2.3 is available now ... the X11R5 AixWindows is available in December ....
- |> >
- |> >I heard that 3.2.3 will now support booting of rootvg without quorum of the
- |> >VGDA (we mirror roovg over 2 disks instead of 3)...is this true?
- |> >
- |> >Douglas L.Acker Western Geophysical Exploration Products
- |>
- |> I pulled this from the announcement letter (292-532) off the anonymous ftp
- |> machine Marc Prawlinger advertised a while back (IP address 192.35.233.1
- |> in /pub/announcements after looking at 00INDEX):
- |>
- |> NUMBER 292-532
- |> DATE 920922
- |> CATEGORY GD00, GD70, WS00, AS60
- |> TYPE Programming
- |> TITLE IBM AIX VERSION 3.2.3 FOR RISC SYSTEM/6000
- |> :
- |> [stuff omitted]
- |> :
- |> o Improved disk mirroring capability
- |> AIX Version 3.2.3 for RISC System/6000 Extended Support
- |> allows the user to turn off Logical Volume Manager (LVM) quorum
- |> protection. Quorum protection is designed to ensure data
- |> consistency and integrity. When activating a logical volume
- |> group, the LVM reads management data from each physical volume
- |> defined in the volume group. If the LVM cannot read a majority
- |> (quorum) of the copies of the management data, it will not
- |> activate a logical volume group. However, if there are only two
- |> physical volumes in a volume group, losing one physical volume
- |> can cause the volume group to lose a majority of its management
- |> data areas (quorum) and thus prevent the volume group from being
- |> made available. Turning off quorum protection allows a volume
- |> group to be available even when a quorum of its disks are not
- |> online. For instance, this would make the alternate copy of data
- |> in a mirrored logical volume in a two-disk volume group
- |> accessible. While this is a less expensive availability option,
- |> it is not as secure as running with LVM quorum on (which may
- |> require three disks to help guarantee no loss of data and no
- |> off-line time). Users run the risk of data loss with quorum
- |> protection turned off, since the data may be accessible but not
- |> mirrored.
- |>
- |>
- |> --
- |> tcpnet: konopik@konopik.austin.ibm.com | Brad Konopik
- |> ibmvnet: KONOPIK at AUSTIN | IBM AIX Porting Center, Austin
- |> internet: konopik.austin.ibm.com!konopik@ibmpa.awdpa.ibm.com
- |> uunet: ..!uunet!ibmsupt!ibmpa!konopik.austin.ibm.com!konopik
-