OpenVMS VAXF11X05_071 VAX V7.1 F11BXQP ECO Summary
TITLE: OpenVMS VAXF11X05_071 VAX V7.1 F11BXQP ECO Summary
Modification Date: 30-NOV-1999
Modification Type: Updated Kit: Supersedes VAXF11X04_071
NOTE: An OpenVMS saveset or PCSI installation file is stored
on the Internet in a self-expanding compressed file.
The name of the compressed file will be kit_name-dcx_vaxexe
for OpenVMS VAX or kit_name-dcx_axpexe for OpenVMS Alpha.
Once the file is copied to your system, it can be expanded
by typing RUN compressed_file. The resultant file will
be the OpenVMS saveset or PCSI installation file which
can be used to install the ECO.
Copyright (c) Compaq Computer Corporation 1998, 1999. All rights reserved.
PRODUCT: OpenVMS VAX
COMPONENTS: F11BXQP
F11AACP
FILESERV
VMS$CONFIG-050_CACHE_SERVER.COM
SOURCE: Compaq Computer Corporation
ECO INFORMATION:
ECO Kit Name: VAXF11X05_071
ECO Kits Superseded by This ECO Kit: VAXF11X04_071
VAXF11X03_071
ECO Kit Approximate Size: 440 Blocks
Kit Applies To: OpenVMS VAX V7.1
System/Cluster Reboot Necessary: Yes
Rolling Re-boot Supported: Yes
Installation Rating: INSTALL_1
1 - To be installed on all systems running
the listed version(s) of OpenVMS.
Kit Dependencies:
The following remedial kit(s) must be installed BEFORE
installation of this kit:
VAXY2K01_071
In order to receive all the corrections listed in this
kit, the following remedial kits should also be installed:
VAXSYSA02_071
ECO KIT SUMMARY:
An ECO kit exists for F11BXQP on OpenVMS VAX V7.1. This kit addresses
the following problems:
Problems Addressed in VAXF11X05_071:
o NOTFCBFCB Bugcheck on simultaneous dereference of file
When two processes are accessing a file via the MOVEFILE and
READATTR/FID_TO_SPEC mechanism, such as a data collector process
running on the same volume as a defragger competing for the same
data, both processes try to delete the 'primary_fcb' used to get the
information in question. In both of these circumstances, the
reference count on the FCB has not been bumped up so both accesses
appear to allow the deletion. This results in a NOTFCBFCB Bugcheck.
Image(s) Affected
- [SYS$LDR]F11BXQP.EXE
o Attempt to lock volume for REBUILDing meta-data on volume fails
If a process attempts to mount a Bound Volume Set (BVS) and all the
members of the BVS are not present, an attempt to lock the volume
for REBUILDing the meta-data on the volume will fail, but the
blocking lock (F11B$b) is left with the process.
Image(s) Affected
- [SYS$LDR]F11BXQP.EXE
o XQPERR bugcheck in LOCKERS when retry limit on F11B$x lock reached
An XQPERR Bugcheck occurs in LOCKERS when the retry limit on F11B$x
lock is reached. This happens when the owner of the $x lock is
running at a high process priority and there are a number of
processes in a clustered system that are also trying to validate
this lock but at a lower process priority. The high priority
process never really gives up the locks long enough to let the low
process priority processes to continue and either validate or
release the $v lock.
To avoid this situation, after (every) 256 attempts, the process
with the most retry iterations is stalled for a short period to
allow other processes to complete their accesses to the lock.
Image(s) Affected
- [SYS$LDR]F11BXQP.EXE
o NOSUCHFILE error.
When a directory with multiple headers, e.g. a large ACL, is deleted
on one mode in a cluster (Node A), if that directory had previously
been accessed on another node in the cluster (Node B), the files
created with the previously deleted headers would show up on Node B
with a NOSUCHFILE error."
Image(s) Affected:
- [SYS$LDR]F11BXQP.EXE
o Fix GETTIM to translate 64 bit time to RSX compatible time
Fix the internal GETTIM function so that it properly formats the 64
bit internal time to an RSX-11 compatible ASCII string.
RSX date string contain only a 2 character year field (ASCII). In
order to accommodate the year 2000, this ASCII encoding will now
include the value of decades (since 1900) into the string. This
means that for the years 1900 through 1999, the date string will
appear as 00 to 99. For the years 2000 into the years 39xx, the
string will show as ':0', ';0', etc.
For years prior to the year 1900, dates are encoded as binary zeros,
which is interpreted as 'no date'.
Image(s) Affected:
- [SYS$LDR]F11BXQP.EXE
Problems Addressed in VAXF11X04_071:
o A reserved operand fault bugcheck occurs on a $QIO exit.
During the mounting of the system disk, the error message that
the disk is mounted with a reduced cache is suppressed. Hence,
the System Manager may be unaware that the performance of the
system disk and all others attached to the same cache block is
questionable.
Image Affected: [SYSEXE]FILESERV.EXE
Note: [SYS$STARTUP]VMS$CONFIG-050_CACHE_SERVER.COM also is
needed to run the FILESERV.EXE image.
o When deleting a large file (such as a system dump file), a
UNXSIGNAL Bugcheck may occur. This particular bugcheck occurs
because a variable in the code causes a reference to memory
data that the file system does not own and an internal access
violation occurs (ACCVIO).
Image Affected: [SYS$LDR]F11BXQP.EXE
o On some systems with higher rates of system paging or with
WSDEC set to a non-standard value, a system can crash with a
PGFLIPLHI (Page Fault IPL too High) bugcheck. This problem
happened when the system returns from a SMP$ACQUIRE call.
Image Affected: [SYS$LDR]F11BXQP.EXE
o An XQPERR can occur in the RDBLOK module during disk cleanup
using DCL.
Image Affected: [SYS$LDR]F11BXQP.EXE
o When storing the value of a directory index buffer, the system
may crash with a PGFLIPLHI, SSRVEXCPTN error.
Image Affected: [SYS$LDR]F11BXQP.EXE
o A dismount on a shadowed device results in an unnecessary
copy.
Image Affected: [SYS$LDR]F11BXQP.EXE
o If a process is created with a termination mailbox unit
assigned, the files are not properly audited.
Image Affected: [SYS$LDR]F11BXQP.EXE
o An XQPERR bugcheck (crash) in the RETURN_CREDITS module can
occur during DISMOUNT.
Image Affected: [SYS$LDR]F11BXQP.EXE
o A XQPERR Bugcheck (crash) in XQP can occur during an SET ACL
(SET FILE/ACL) operation.
Image Affected: [SYS$LDR]F11BXQP.EXE
o When two processes are competing to dismount a volume, one
process may be just a bit faster than the other. This process
can delete the VCB and other structures before the second
process has time to finish up its processing. The result is
in an UNXSIGNAL/ACCVIO crash.
Image Affected: [SYS$LDR]F11BXQP.EXE
o A device reporting a read error (SS$_PARITY) during read/write
processing in the XQP will attempt to record the bad blocks
and FID in the BADLOG.SYS file. When the internal close
operation occurs (on BADLOG), the system XQPERR bugchecks when
it finds the process's dirty buffers have not been written
out.
Image Affected: [SYS$LDR]F11BXQP.EXE
o A UNXSIGNAL/ACCVIO error can occur at module F11BXQP. This
problem can occur during mount, when the primary volume is not
yet mounted.
Image Affected: [SYS$LDR]F11BXQP.EXE
o Processes can hang (deadlock) when dismounting a device.
Image Affected: [SYS$LDR]F11BXQP.EXE
o A 'no such file' error can occur on directory extension FCBs.
This problem can occur in at least two ways:
1. A file appears normal on one node but has an 'no such
file' error from another node.
2. BACKUP or DUMP /HEADER encounters a read attributes
error of NOSUCHFILE. This error occurs when an attempt
is made to read a file header, for which the FCB for the
old header is still in memory.
Image Affected: [SYS$LDR]F11BXQP.EXE
o Alternate file access checking does not provide the correct
information for files on ODS-1 disks. That is, an ODS-1 disk
access does not process the alternate file access checking
parameters FIB$L_ALT_ACCESS and FIB$L_STATUS.
Image Affected: [SYSEXE]F11AACP.EXE
o The F11A routine ACPCONTROL only understands the control
function REMAP_FILE. Hence, for illegal function codes,
all other control functions return NORMAL, when ILLIOFUNC
should be returned instead.
Image Affected: [SYSEXE]F11AACP.EXE
o Occasional false end-of-file (EOF) errors can occur on a read
operation.
Image Affected: [SYS$LDR]F11BXQP.EXE
o The XQP fails after an IO$_DEACCESS call with an SS$_BADPARAM
error. One cannot determine whether a file is still open or
not due to the failed IO$_DEACCESS call.
Image Affected: [SYS$LDR]F11BXQP.EXE
o Non-privileged users can change the revision date (and count)
of a file for which they should have only READ access. For
example, if a non-privileged user with READ-only file access
tries to set the file protection, a failure occurs with an
SS$_NOPRIV error as expected. However, the revision date
(and count) are modified.
Image Affected: [SYS$LDR]F11BXQP.EXE
Problems Addressed in VAXF11X03_071:
o An XQPERR bugcheck error, "all the index buffers are active",
occurs when running with a reduced cache or during a backup.
o An XQPERR bugcheck error, "wrong lock basis with FCB present",
occurs when files with ACLs are created on a full volume.
o It is possible to serialize on the wrong volume in a volume set.
o If more than one process queues for a volume's activity
blocking lock, the XQP can deadlock.
o The user-mode crasher in VALIDATE_FILE needed to be fixed.
Specifically, the FIB$C_VALIDATE_FILE ACP control function
caused a bugcheck if called on a channel which was not
accessed.
o Various XQPERR bugchecks occur in directory scanning/shuffling.
o A crash may occur during creation of a file with a version
limit of 1 if SYSTEM_CHECK is on or bit 5 or 6 of ACP_DATACHECK
is 1. An XQPERR bugcheck occurs due to a corrupted directory.
o The NOTIFY_USER for final status of an XQP request occurs too
early in XQP request completion to report any errors produced
in cleanup or auditing. This normally does not cause a problem
since USER_STATUS is not expected to change during cleanup.
However, if it does change, then the output of SET WATCH FILE
is misleading.
o XQP requests to create a new file with version limits set can
fail with an SS$_NOSUCHFILE error.
o Deleting a stale alias on a directory with extension headers
can bugcheck with an XQPERR "lock index has shifted" error.
This problem occurs when:
1. An alias to an existing file is created;
2. The original file is deleted; and
3. The original file's file header is reused as an
extension header of the alias's parent directory
(when ACEs are added to the directory).
o Prevent access to file headers beyond index file highwater-marking
(HWM).
It is possible to ACCESS by FID a file header beyond the
current end of the index file on a freshly-initialized volume.
Creating a new file accessed in this way can bugcheck the
system with the XQPERR error.
o Fix a reserved operand fault bugcheck on $QIO exit. The
$QIO failed on return because the IPL was set to zero but
was entered at IPL 2.
o The code was in a pageable psect and managed to get paged out.
o $GET_SECURITY was reading the ORB on a file without any
synchronization with the file system. In the best case,
this problem can lead to bad information being returned.
In the worst case, if the filesystem was rebuilding the
ORB's ACL chain at the time, a kernel mode ACCVIO can occur.
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.
This patch can be found at any of these sites:
Colorado Site
Georgia Site
European Site
Files on this server are as follows:
vaxf11x05_071.README
vaxf11x05_071.CHKSUM
vaxf11x05_071.CVRLET_TXT
vaxf11x05_071.a-dcx_vaxexe
vaxf11x05_071.CVRLET_TXT
