VMS712_SHADOWING-V0400 Alpha V7.1-2 Shadowing ECO Summary
TITLE: VMS712_SHADOWING-V0400 Alpha V7.1-2 Shadowing ECO Summary
Modification Date: 12-DEC-00
Modification Type: Updated Kit. Moved to correct ftp directory
Modification Date: 12-DEC-00
Modification Type: Updated Kit. Supersedes VMS712_SHADOWING-V0300
NOTE: An OpenVMS saveset or PCSI installation file is stored
on the Internet in a self-expanding compressed file.
For OpenVMS savesets, the name of the compressed saveset
file will be kit_name.a-dcx_vaxexe for OpenVMS VAX or
kit_name.a-dcx_axpexe for OpenVMS Alpha. Once the OpenVMS
saveset is copied to your system, expand the compressed
saveset by typing RUN kitname.dcx_vaxexe or kitname.dcx_alpexe.
For PCSI files, once the PCSI file is copied to your system,
rename the PCSI file to kitname-dcx_axpexe.pcsi, then it can
be expanded by typing RUN kitname-dcx_axpexe.pcsi. The resultant
file will be the PCSI installation file which can be used to install
the ECO.
Copyright (c) Compaq Computer Corporation 2000. All rights reserved.
OP/SYS: OpenVMS Alpha
COMPONENT: Volume Shadowing
SOURCE: Compaq Computer Corporation
ECO INFORMATION:
ECO Kit Name: VMS712_SHADOWING-V0400
DEC-AXPVMS-VMS712_SHADOWING-V0400--4.PCSI
VMS712_SHADOWING-V0300
ECO Kits Superseded by This ECO Kit: VMS712_SHADOWING-V0200
VMS712_SHADOWING-V0100
ECO Kit Approximate Size: 2096 Blocks
Kit Applies To: OpenVMS Alpha V7.1-2
System/Cluster Reboot Necessary: Yes
Rolling Re-boot Supported: Yes
Installation Rating: INSTALL_2
2 - To be installed on all systems running
the listed version(s) of OpenVMS and
using the following feature(s):
SHADOWING
Kit Dependencies:
The following remedial kit(s) must be installed BEFORE
installation of this kit:
VMS712_UPDATE-V0300
VMS62TO71U2_PCSI-V0200
In order to receive all the corrections listed in this
kit, the following remedial kits should also be installed:
None
ECO KIT SUMMARY:
An ECO kit exists for Shadowing on OpenVMS Alpha V7.1-2. This kit
addresses the following problems:
Problems Addressed VMS712_SHADOWING-V0400:
o Increase the merge factor for shadowing from 1,000 to 10,000.
This change also displays the merge factor only during an
actual merge operation.
Images Affected: [SYSEXE]SHADOW_SERVER.EXE
o An INVEXCPETN crash occurs in SHIN$RESTORE_WLE_ENTRY when a
write completes to a multi-member shadow set.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o An "Incompatible Shadow Set Member" (SS$_INCSHAMEM) error
message displays.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o A SHADDETICON error occurs after removing or adding a shadow
set member.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o Removal of the master shadow set member may cause data
corruption.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o When a path to a device is lost during a write operation, the
SCB (system control block) can contain a stale master member
index value. This will cause the system to crash.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o A system crash occurs on a cluster node when a SS$_VALNOTVALID
error occurs in MERGE_SIGNAL on another cluster.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o Add changes to SHADDEF.SDL to support per member FibreChannel
features.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
Problems addressed in VMS712_SHADOWING-V0300:
o The VMS712_SHADOWING-V0200 kit documentation contained an
incorrect kit name for the dependent PCSI kit. This
incorrect name also appeared in kit installation messages.
This lead to user confusion regarding what dependent kits
needed to be installed prior to installing the VMS712_SHADOWING
kit.
This kit corrects the above documentation error. Functionally,
it is the same as the previous SHADOWING kit, VMS712_SHADOWING-V0200.
If you have installed the VMS712_SHADOWING-V0200 kit, you do not
need to install the VMS712_SHADOWING-V0300 kit.
Problems addressed in VMS712_SHADOWING-V0200:
o Multipath secondary UCBs cannot be shadow set members. The
multipath disk would be immediately removed from the shadow
set and an OPCOM message would be issued. Since MOUNT retries
this operation a number of times, even with /NOASSIST, the
failure would be repeated a number of times.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o Disabling a FibreChannel cascade connection corrupts a
shadowset member. When the cascade connection is broken,
two nodes can only see their local FC device. They enter
Mountverifaction. One node will throw out its remote member
and continue using the last member. The other node will then
throw out its remote member, i.e., the disk that has just been
used by the first node. This causes the first node to have
zero members and the second node continues with a member that
did not get the last set of writes.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o Disabling a FibreChannel cascade connection results in an
INVEXCPTN crash.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o SHADOWSET goes MOUNTVERIFYTIMEOUT and cannot be remounted.
The process attempting the remount hangs.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o The Master Member SCB hangs until MVTIMEOUT expires.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
Problems addressed in VMS712_SHADOWING-V0100:
o When a copy operation that interrupts a merge operation is
terminating, it finds that there are no members marked for the
merge and the thread crashes the system with a SHADDETINCON
bug check.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o SHOW DEVICES shows zero percent merged status although the
shadow set status does not indicate that a merge is required.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o Bit 16 in SHADOW_SYS_DISK can be set by the user to eliminate
using remote members of the shadowset for reads. Occasionally,
use of bit 16 fails to eliminate remote members from being used.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o A CPUSPINWAIT bug check can occur if the read of the SCB of
a shadow set member cannot pass the checksum test.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o DCD (Disk Copy Data) will not always be initiated properly.
During an assisted copy operation, if the source member was
dismounted or otherwise removed from the shadow set, the
connection to the controller would not clean up correctly.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o A full copy operation that is interrupted for a mini-merge
will not complete the full copy operation correctly.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o Typing incorrect commands results in a system crash.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o When two disks are added to a shadowset in the same mount
command, the copies are done sequentially instead of in
parallel. This causes the copies to take twice as long as
they should.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
INSTALLATION NOTES:
The images in this kit will not take effect until the system is
rebooted. If there are other nodes in the VMScluster, they must
also be rebooted in order to make use of the new image(s).
If it is not possible or convenient to reboot the entire cluster at
this time, a rolling re-boot may be performed.
All trademarks are the property of their respective owners.
Copyright (c) Compaq Computer Corporation 2000. All rights reserved.
Modification Date: 12-DEC-00
Modification Type: This kit has been ARCHIVED.
OP/SYS: OpenVMS Alpha
COMPONENT: Volume Shadowing
SOURCE: Compaq Computer Corporation
ECO INFORMATION:
ECO Kit Name: VMS712_SHADOWING-V0300
DEC-AXPVMS-VMS712_SHADOWING-V0300--4.PCSI
ECO Kits Superseded by This ECO Kit: VMS712_SHADOWING-V0200
VMS712_SHADOWING-V0100
ECO Kit Approximate Size: 2064 Blocks
Kit Applies To: OpenVMS Alpha V7.1-2
System/Cluster Reboot Necessary: Yes
Rolling Re-boot Supported: Yes
Installation Rating: INSTALL_2
2 - To be installed on all systems running
the listed version(s) of OpenVMS and
using the following feature(s):
SHADOWING
Kit Dependencies:
The following remedial kit(s) must be installed BEFORE
installation of this kit:
VMS712_UPDATE-V0300
VMS62TO71U2_PCSI-V0200
In order to receive all the corrections listed in this
kit, the following remedial kits should also be installed:
None
ECO KIT SUMMARY:
An ECO kit exists for Shadowing on OpenVMS Alpha V7.1-2. This kit
addresses the following problems:
Problems addressed in VMS712_SHADOWING-V0300:
o The VMS712_SHADOWING-V0200 kit documentation contained an
incorrect kit name for the dependent PCSI kit. This
incorrect name also appeared in kit installation messages.
This lead to user confusion regarding what dependent kits
needed to be installed prior to installing the VMS712_SHADOWING
kit.
This kit corrects the above documentation error. Functionally,
it is the same as the previous SHADOWING kit, VMS712_SHADOWING-V0200.
If you have installed the VMS712_SHADOWING-V0200 kit, you do not
need to install the VMS712_SHADOWING-V0300 kit.
Problems addressed in VMS712_SHADOWING-V0200:
o Multipath secondary UCBs cannot be shadow set members. The
multipath disk would be immediately removed from the shadow
set and an OPCOM message would be issued. Since MOUNT retries
this operation a number of times, even with /NOASSIST, the
failure would be repeated a number of times.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o Disabling a FibreChannel cascade connection corrupts a
shadowset member. When the cascade connection is broken,
two nodes can only see their local FC device. They enter
Mountverifaction. One node will throw out its remote member
and continue using the last member. The other node will then
throw out its remote member, i.e., the disk that has just been
used by the first node. This causes the first node to have
zero members and the second node continues with a member that
did not get the last set of writes.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o Disabling a FibreChannel cascade connection results in an
INVEXCPTN crash.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o SHADOWSET goes MOUNTVERIFYTIMEOUT and cannot be remounted.
The process attempting the remount hangs.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
o The Master Member SCB hangs until MVTIMEOUT expires.
Images Affected: [SYS$LDR]SYS$SHDRIVER.EXE
Problems addressed in VMS712_SHADOWING-V0100:
o When a copy operation that interrupts a merge operation is
terminating, it finds that there are no members marked for the
merge and the thread crashes the system with a SHADDETINCON
bug check.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o SHOW DEVICES shows zero percent merged status although the
shadow set status does not indicate that a merge is required.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o Bit 16 in SHADOW_SYS_DISK can be set by the user to eliminate
using remote members of the shadowset for reads. Occasionally,
use of bit 16 fails to eliminate remote members from being used.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o A CPUSPINWAIT bug check can occur if the read of the SCB of
a shadow set member cannot pass the checksum test.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o DCD (Disk Copy Data) will not always be initiated properly.
During an assisted copy operation, if the source member was
dismounted or otherwise removed from the shadow set, the
connection to the controller would not clean up correctly.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o A full copy operation that is interrupted for a mini-merge
will not complete the full copy operation correctly.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o Typing incorrect commands results in a system crash.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
o When two disks are added to a shadowset in the same mount
command, the copies are done sequentially instead of in
parallel. This causes the copies to take twice as long as
they should.
Images Affected:
- [SYS$LDR]SYS$SHDRIVER.EXE
- [SYSEXE]SHADOW_SERVER.EXE
INSTALLATION NOTES:
The images in this kit will not take effect until the system is
rebooted. If there are other nodes in the VMScluster, they must
also be rebooted in order to make use of the new image(s).
If it is not possible or convenient to reboot the entire cluster at
this time, a rolling re-boot may be performed.
All trademarks are the property of their respective owners.
This patch can be found at any of these sites:
Colorado Site
Georgia Site
Files on this server are as follows:
dec-axpvms-vms712_shadowing-v0400--4.README
dec-axpvms-vms712_shadowing-v0400--4.CHKSUM
dec-axpvms-vms712_shadowing-v0400--4.pcsi-dcx_axpexe
vms712_shadowing-v0400.CVRLET_TXT
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