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  • Latest Post - ‏2019-04-26T16:29:41Z by gpfs@us.ibm.com
gpfs@us.ibm.com
gpfs@us.ibm.com
662 Posts

Pinned topic IBM Spectrum Scale V4.2.1 announcements

‏2016-09-21T02:17:27Z |

GPFS 4.2.1.1 is now available from IBM Fix Central:

http://www-933.ibm.com/support/fixcentral

Problems fixed in GPFS 4.2.1.1

September 20, 2016

* Fix code for handling mmfsctl suspend-write operation to prevent blocking of close operation after reading file/directory. This issue only affect nodes running AIX.
* Fix a GNR logging issue that may cause RG recovery failure and data lost.
* Fix a SIGV problem when running mmdefrag on FPO file system with trace enabled.
* Make GSKit the default encryption engine on s390.
* Fix a bug in which start protocol tracing (with mmprotocoltrace) would fail on nodes where daemon node name and admin node name were not the same.
* Fix a problem in which updating quota files will fail after running mmfsck.
* Fix a problem in which GPFS may have incorrect contact nodes information in memory even though the correct contact nodes information was provided by the mmremotecluster add command.
 This could happen if the same cluster was previously added with incorrect contact nodes.
* Fix a race condition that could cause incorrect file size being reported to an application. This only affect Linux and only when the application checks the file size right after inc
reasing file size via writing past end of file.
* This fix will make sure the NFSv3 files are closed when using Ganesha.
* Resolve interdependencies of Mkdirs and Renames so as to avoid queue flush getting stuck.
* Fix a deadlock that can occur during look up of a .snapshots/ directory of a fileset.
* Fix a problem that causes mmsdrrestore on all CCR nodes to fail if the command is issued from a nonquorum node.
* Make GPFS work on Intel Broadwell CPU with kernel 3.7 or later.
* Workloads with heavy use of medium-sized writes (100K-500K) may see improved performance.
* Fix Assert exp(threadP != __null) in file rbmd11628b/src/avs/fs/mmfs/ts/classes/tscomm/llcomm.C which can occur under heavy stress.
* Fix a high contention in read code path which improves the performance when large number of threads/processes read the same block of a file concurrently.
* Fix a GPFS daemon failure during QosIoMon::startManager - logAssertFailed - acquireMgrMutex. Apply this fix if you use QOS features.
* Fix an issue in the AFM environment where fileset recovery causes gateway node to crash if recovery detects that the symlink have attribute(Example. chown -h user:name) changes.
* Fix snapshot restore when building restore operation lists. This issue only happens when there are files with inode numbers bigger than the maximum value of 32 bits integer in the file system.
* Fix a problem in which gpfs.snap prematurely exits if the GUI process is not running.

* Fix the "Assert on Structure Error on FileMetadata::getSnapDataBlockDiskAddr" when reading a clone child file from a snapshot file system. This issue would only occur on a clone chi
ld file and only when the data of the clone child file is modified in the root file system after creating the snapshot.
* Fix a signal 11 error that was caused by a race condition of mmadddisk and block allocation.
* Fix an assert "fsdaP->getNValidAddrs() == nAllocated" which happens on a FPO file system while doing fragment block allocation.
* Fix signal 11 caused by a very rare race condition between recovery group resign/relinquish and pdisk I/O activities.
* Fix a bug in which mmgetstate reports the wrong status during heavy stress.
* Fix a problem in which the mmsmb exportacl getid command failed to return the correct SID of a user or group.
* Fix a GNR server crash that can occur during pdisk discovery.
* Fix a deadlock that can occur during a heavy IO-load while using LROC devices while requesting pagepool buffer allocations.
* This fix allows GPFS on Windows to fetch IMU/RFC2307 mappings from a single alternate trusted domain.
* Fix a deadlock that can occur when accessing snapshot file data.
* Fix a 760(E_CDITTO_LOCK) error which can occur on a punch hole operation on a clone child file.
* Fix a not implemented error that can occur calling GPFS APIs on a system in which we have reached the maximum number of open files.
* Fix a potential deadlock during a PIT repair/restripe run if a file is truncated when the new end of file is being repaired/restriped by the PIT process.
* Fix an assert which happens when logtipback vdisk is created before loghome vdisk.
* Fix a NT_STATUS_NONE_MAPPED error which can occur using the 'mmsmb export change' command when attempting to set the 'admin users' SMBOption.
* The logic for preserving the state of world for expel data collection is adjusted to avoid causing mutex contention resulting in an unstable cluster.
* Fix an assertion in GPFS send message when shutting down an invalid socket number.
* Fix a deadlock that can occur when prefetch recovery is happening and applications are trying to access the files in the fileset.
* mmchattr --delete-attr can remove gpfs.BGF, gpfs.WAD or gpfs.WADFG now.
* Fix a problem when both maxblocsize and scatterBufferSize are equal. The daemon asserts when the buffer memory usage is high.
* Fix an assert that is caused by a race between SGExceptionLocalPanicThread and repairFile.
* Fix a problem in which SGDesc migrate code handles multiple disk failures incorrectly.
* Fix information messages from mmapplypolicy which contain "hit" counts for EXCLUDE rules, which were incorrectly reported as 0 when -N and -g options are used.
* Fix a segmentation fault that can occur running the mmsetquota command. This issue would only happen when GPFS overwrite tracing is enabled on Linux.
* Fix a clone parent file restore failure. This issue would only happen when the clone files need to be restored and the clone parent files have "immutable" attribute in restoring snapsh* Fix rename issues with Recovery for Directories and files when the special block files inside a directory gets renamed.
* Before linux-2.6.38, the implementation of fallocate(2) on gpfs needs an open instance which has delay close semantics. This may cause a timing window after the open instance is closed. read(2) operation cannot see up to date mmap modification until the timing window is gone (Assume no msync(2) is called). This fix closes the time window.
* Fix output for mmgetstate with -Y flag so that it matches GPFS documentation.
* GPFS commands may fail when public key expired. This fix re-generated the key.
* Fix a possible segmentation fault in offline fsck during mutlipass dir scan. Multipass directory scan happens when there is insufficient memory to hold the fsck data structures required for the directory scan phase.
* Fix resync thread not getting killed by deadlock detection code if it takes a long time to complete.
* Fix a rare assert "isSGPanicked" in the Asynchronous Direct I/O code path.
* Fixed an assert on when DBGASSERT is enabled and dm_get_dmattr is called on files in .snapshot directory.
* Fix a ENOMEM failure in tslsenclslot. The error condition occurs under heavy loads only. This fix is required for all platforms.
* Fix an assert that can occur on a GW node if the dr primary conversion is stopped, and the fileset is unlinked and AFM is disabled.
* Fix errors that occur after a file set manager is moved from nodeA to nodeB and new filesets are created. The errors occur because nodeA can not see the new filesets.
* Fix a problem that causes ACL inconsistency on the sgmgr node. This may cause an FSSTRUCT or an assert.
* Fix code to prevent a potential GPFS daemon assert during file system restripe.
* Fix an alloc segment steal problem that can lead to a "More than 22 minutes searching for a free buffer" assert.
* This fix reduces the ThreadStateMutex hold time in deadlock detection and waiter related functions to make GPFS run more smoothly.
* mmexportfs: Fix an issue where the file system exported but the output data file is missing.
* Fix a minor problem by not sending a delete snapshot request to secondary.
* Fix a problem with PCACHE_REMOVES on renamed NFS files that contain special characters in their name returning E_BUSY from home.
* Fix the long waiter "InodeDeleteThread, 'waiting for XW lock'" caused by a self-deadlock issue, by correcting the release orders of GPFS file lock and Linux inode. This issue would see under Linux system only.
* Fix an issue in AFM environment where prefetch recovery could deadlock with already running management programs (ex. create snapshot).
* Add an undocumented config parameter dataCollectionPendingDelay which controls how long we try to preserve the state of the world while collecting expel debug data. The code path is also optimized in general.
* Fix allocation code to prevent an infinite loop during restripe that could cause long waiters. This could occur when disks are full in multiple failure groups.
* Add a "flushOnClose" config parameter to force dirty data to be flushed to disk whenever a file is closed.
* Fix revalidation issue with resync over gpfs backend.

* Fix a problem when creating iSCSI volumes with more than 16 bytes name.
* Fix a problem in which Ganesha fails to start when netgroup name starts with numeric character.
* Fix a problem in which mmbackup --rebuild fails.  This occurs on AIX only.
* Fix an assert that can occur after a nfs error getting sparse info of a file using control interface.
* Fix the "Node name is not valid" failure for mmrestorefs command.
* Fix the way errorcodes are being decoded and converted to AFM range from GPFS or system range.
* Fix an issue in AFM DR environment where DR failback fails to restore from the RPO snapshot. This happens when fileset restore tries to punch hole on a file and file was sparse in RPO snapshot.
* Fix a bug where mmchcluster may fail when run on a non-configure server to disable CCR.
* This fix will not show old open file or directory names that are renamed while they are open.
* Fix a problem in which AFM does not honor async delay if softQMem threshold is set as 0. It plays ops to home immediately.
* This update addresses the following APARs: IV85089 IV87625 IV87626 IV87627 IV87628 IV87629 IV87630 IV87631 IV87632 IV87633 IV87634 IV87635 IV87636 IV87637 IV87638 IV87639 IV87645 IV87809 IV87813 IV88298 IV88855.

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2016-09-21T14:28:03Z  

    Security Bulletin: Vulnerability in Samba affects IBM Spectrum Scale SMB protocol access method (CVE-2016-2119)

    Summary
    A Samba vulnerability which could allow a remote attacker to conduct spoofing attacks affects IBM Spectrum Scale SMB protocol access method.


    See the complete bulletin at  www-01.ibm.com/support/docview.wss?uid=ssg1S1009255

     

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2016-10-12T17:23:03Z  

    Security Bulletin: IBM Spectrum Scale Object Protocols functionality (Linux Standard and Advanced) is affected by security vulnerabilities in the TLS and SSL protocols (CVE-2015-2808 and CVE-2014-3566)

    Summary

    IBM Spectrum Scale Object Protocols functionality (Linux Standard and Advanced) is affected by security vulnerabilities in the TLS and SSL protocols (CVE-2015-2808 and CVE-2014-3566)


    See the complete bulletin at http://www-01.ibm.com/support/docview.wss?uid=ssg1S1009336

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2016-11-07T15:36:07Z  

    Security Bulletin: A security vulnerability has been identified in GSKit shipped with IBM Spectrum Scale V4 (CVE-2016-2183)

    Summary

    A security vulnerability has been identified in one of the cipher suites supported by GSKit

    See the complete bulletin at http://www-01.ibm.com/support/docview.wss?uid=ssg1S1009579

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2016-11-16T19:13:52Z  

    GPFS 4.2.1.2 is now available from IBM Fix Central:

    http://www-933.ibm.com/support/fixcentral

    Problems fixed in GPFS 4.2.1.2

    November 10, 2016

    * Fix problem with choosing only fully cached files for Cache Eviction.
    * Fix a problem in which mmfsck ends prematurely with exit status 666:9:2.
    * Fix a mmcrsnapshot command hang. This would only happen if a snapshot exists before and after the inode space expanded on a problem file system or fileset.
    * Fix a deadlock that can occur because of a race condition between dmapi calls with file handles and a file deletion.
    * Fix a problem in which the node freezes and it is required to be restarted. This can occur when vfs hits it's open file limit found in /proc/sys/fs/file-max.
    * Fix an ioctl error that can occur when running the mmgetstate -a command.
    * Improve consistency check for CES-only related IP movements.
    * Fix a problem in which different up-calls are dropped.
    * Fix a faulty Events Exporter assertion. The faulty assertion could cause the mmfsd daemon to fail in rare instances while generating an internal dump or responding to certain "mmfsadm saferdump" commands.
    * Provide a new config option afmSyncAllXattrs to synchronize all xattrs.
    * Fix a "cryptographic library could not be initialized" error that can occur when changing a cipherList in a P8LE environment.
    * This fix improves GNR's error handling of pdisk faults that can occur after the fault-tolerance of the system is exceeded.
    * Fix the 'pStepReceiveP->phase == phase' assert that can occur when fsck is run in a tight loop.
    * When there are tons of users and groups intertwined with a lot of filesets with --perfileset-quota enabled this fix can improve the speed of mmcheckquota greatly.
    * Fix a problem in which an offline fsck overflowed a duplicate fragment buffer.
    * Fix a 'opP != __null' assert hit by offline fsck when handling a corrupt compressed files.
    * Fix a mmap read issue that can occur when getting stale data from the kernel page cache.
    * Fix a problem in which a NFS client gets an IO error. This can occur in a Ganesha environment.
    * Fix a problem in which fcntl lock waiters are not resumed when a linux holder downgrades.
    * Fix a problem in which 3524 storage enclosures are excluded when syncing storage enclosures. This fix applies to GSS/ESS customers.
    * Fix a problem in which mmrepquota shows the fileset id but does not show the name of the added fileset quota.
    * Fix a problem which is causing a disconnect between the AFM DR pairs. This can occur using the mmcesdr command after initial configuration has been completed on both clusters.
    * Fix a "[Errno 2] No such file or directory" error that shows up in the /var/adm/ras/mmsysmonitor.log when the sqlite3 and the tar executables do not exist in /usr/bin/tar and /usr/bin/sqlite3. This can cause the FILESYSTEM and DISK monitors of Sysmonitor toget into an UNKNOWN state.

    * Fix the exp(!ebP->replyDone) assert that can occur when DMAPI is being used.
    * Fix a problem in the AFM environment where replication would stop because of an error that might occur while replaying Rename operations. This can cause AFM filesets to go into a recovery and/or resync state.
    * Fix a problem in which IBM Spectrum Scale Object Protocols functionality is affected by security vulnerabilities in the TLS and SSL protocols (CVE-2015-2808 and CVE-2014-3566). This fix is applicable only if Object is enabled and SSL for keystone is configured.
    * Fix a slow down in offline fsck repair. This occurs when inodes in a fileset are not deleted when an afm fileset is converted to normal.
    * Fix a file system hang that occurs during mounting when migrating from an old version of GSS/ESS. This can occur when the logtip vdisk was created with a blocksize of 256k.
    * Fix a problem in a cluster configured with CCR, where a node which is rebooted may be unable to rejoin the cluster. After the reboot, files /var/mmfs/ccr/ccr.paxos.1 and /var/mmfs/ccr/ccr.paxos.2 may have a length of 0. The problem tends to happen in VMs. Error message "Not enough CCR quorum nodes available" (err 809) may be produced for most commands.
    * Fix offline fsck reporting false positive directory entry problems.
    * If some physical disks in GPFS Native RAID (GNR) suffer a large number timeouts (very slow IOs), they should be declared "slow", drained and scheduled for replacement. This defect may have prevented them from being declared slow, meaning they will continue to lower performance and risk outages.
    * Fix a deadlock that can occur when a pagepool is too small in a RDMA enabled environment.
    * Fix a problem in which a write fails on a file which does not have any remote Pcache EA's set. This will cause the fileset to need to be recovered later.
    * Fix a problem on LROC devices greater that 4TB in which the display of mmdiag lroc shows an incorrect Max Capacity value.
    * Fix a "FSErrBadDittoAddr" file system struct error that can occur on a clone child file.
    * Fix a problem in which extra snapshots are created. This can occur if an error 5 occurs while creating a snapshot at home.
    * Fix a gateway node crash that can occur if it accesses garbage content being passed in from gpfsReadAfmDRLastRPOSnapName.
    * Fix an error 124 which can occur if the control interface is not set up properly during DR setup.
    * Fix a setTime assert.  This can occur if mmap is being heavily used.
    * Fix a problem in which trying to set the remote attributes fails. This can occur during a prefetch on an already fetched immutable/appendOnly file.
    * This update addresses the following APARs: IV89733 IV89807 IV89861 IV89881 IV89883 IV89887 IV89899 IV89894 IV89900 IV90172 IV90173 IV90174 IV90107.

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-02-23T15:43:09Z  

    Flash (Alert) IBM Spectrum Scale V4.2.1/4.2.2 parallel log recovery function may result in undetected data corruption

    Abstract

    IBM has identified a problem with the IBM Spectrum Scale parallel log recovery function in V4.2.1/V4.2.2, which may result in undetected data corruption during the course of a file system recovery.

     

    See the complete Flash at http://www-01.ibm.com/support/docview.wss?uid=ssg1S1009965

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-03-07T15:54:24Z  

    Technote:  IBM Spectrum Scale Support: SKLM 2.7 UUID Length Workaround and fix

    Problem(Abstract)

    IBM Spectrum Scale versions up to and including 4.2.2.2 (and ESS versions up to and including ESS 5.0.0) only support master encryption keys with identifiers up to 42 characters in length. With V2.7, IBM Security Key Lifecycle Manager (SKLM) generates encryption keys which are by default up to 48 characters long. Therefore, such keys cannot be used for encryption by Spectrum Scale.

    See the complete Technote at  http://www.ibm.com/support/docview.wss?uid=ssg1S1010026

    Updated on 2017-04-27T20:12:26Z at 2017-04-27T20:12:26Z by gpfs@us.ibm.com
  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-03-29T17:45:02Z  

    Technote:  IBM Spectrum Scale support:  Kernel crashes on Ubuntu 16.04.1 with kernel version 4.4.0-57 or later

    Problem (Abstract)

    When using Ubuntu 16.04.1 and upgrading the kernel version to 4.4.0-57 or later, you may encounter a kernel crash issue when there are some operations involving setting and removing an extended file attribute, e.g. using the setxattr and removexattr syscall.

     

    See the complete technote at :  http://www.ibm.com/support/docview.wss?uid=ssg1S1010071

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-04-08T14:34:11Z  

    Security Bulletin: Multiple vulnerabilities in IBM Java SDK affect IBM Spectrum Scale

    Summary

    There are multiple vulnerabilities in IBM® SDK Java™ Technology Edition, Version 8 used by IBM Spectrum Scale. These issues were disclosed as part of the IBM Java SDK updates in Jan 2017.


    See the complete bulletin at http://www-01.ibm.com/support/docview.wss?uid=ssg1S1010033

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-05-09T22:11:31Z  

    Flash (Alert) IBM Spectrum Scale:  O_SYNC/O_DSYNC not honored, potentially causing some writes to be lost

    Abstract

    IBM has identified a problem with IBM Spectrum Scale V4.2.0.1 through V4.2.2.3, in which the  O_SYNC/O_DSYNC flag to the open() system call could be ignored, which may result in undetected data corruption due to writes to the file (which appear to have been completed) being lost if a node failure occurs before data is written to disk.

    See the complete Flash at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010130

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-05-30T21:58:11Z  

    Flash (Alert): IBM Spectrum Scale (GPFS): Asynchronous I/O write: file size change may not be updated

    Abstract

    IBM has identified an issue with IBM Spectrum Scale V4.1.0.4 through V4.1.1.14 and V4.2.0.0 through V4.2.3.0 levels when asynchronous Direct I/O is used to write to a file on LINUX, using the io_submit interface.

    Problem Summary:

    As a result of an asynchronous Direct I/O write using the io_ submit interface, file size change may not be updated correctly, leading to possible undetected loss of data when a node fails before file size change is committed to disk.

     

    See the complete Flash at: http://www-01.ibm.com/support/docview.wss?uid=ssg1S1010223

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-06-30T15:47:27Z  

    Flash (Alert): IBM Spectrum Scale (GPFS): On I/O with file size change on metanode takeover, the file size change may not be committed to disk

    Abstract

    IBM has identified an issue with IBM GPFS and IBM Spectrum Scale versions when a file size change that happens during a small timing window at the non-metanode may not be committed to the disk during metanode takeover.

    Problem Summary:

    A very small timing window exists in which a file size change, resulting from an append that happens on a non-metanode, may not be committed to the disk when that node takes over as metanode, leading to possible undetected data loss.  If the data involved uses GPFS encryption (IBM GPFS 4.1.x or later), this may also result in undetected data corruption. 

    See the complete Flash at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010293

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-06-30T15:48:21Z  

    Flash (Alert): IBM Spectrum Scale (GPFS): RDMA-enabled network adapter failure on the NSD server may result in file IO error

    Abstract

    IBM has identified an issue with all IBM GPFS and IBM Spectrum Scale versions where the NSD server is enabled to use RDMA for file IO and the storage used in your GPFS cluster accessed via NSD servers (not fully SAN accessible) includes anything other than IBM Elastic Storage Server (ESS) or GPFS Storage Server (GSS); under these conditions, when the RDMA-enabled network adapter fails, the issue may result in undetected data corruption for file write or read operations.

    Problem Summary:

    As a result of a logic error when the NSD server is processing a file write or read request after the RDMA-enabled network adapter fails, the data intended to be written to the file will not be written or the data intended to be read from the file will not be read, and in both cases, the application file operation will return success as if the file IO was completed.

    See the complete Flash at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010233

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-08-14T13:27:01Z  

    Security Bulletin: A vulnerability in Samba affects IBM Spectrum Scale SMB protocol access method (CVE-2017-9461)

    Summary

    A Samba vulnerability affects IBM Spectrum Scale SMB protocol access method which could allow denial of service, caused by
    improper handling of dangling symlinks in smbd. A remote attacker could exploit this vulnerability to cause a fd_open_atomic infinite
    loop with high CPU usage and memory consumption on the system.


    See the complete bulletin at http://www-01.ibm.com/support/docview.wss?uid=ssg1S1010376

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-09-14T14:26:30Z  

    Security Bulletin: IBM Spectrum Scale Object Protocols functionality is affected by a security vulnerability in Python (CVE-2017-2592)

    Summary
    IBM Spectrum Scale Object Protocols functionality is affected by a security vulnerability in Python that could allow a local authenticated attacker to obtain sensitive information, caused by including sensitive data in the CatchError class. A local attacker could exploit this vulnerability to obtain sensitive information. (CVE-2017-2592)

    See the complete bulletin at http://www-01.ibm.com/support/docview.wss?uid=ssg1S1010471

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-09-15T16:42:25Z  

    IBM Spectrum Scale NFS Cluster Export Services may experience NFSv3 access loss during upgrade from v4.2.1.x

    Abstract


    IBM has identified an issue with IBM Spectrum Scale v4.2.1 cluster export services (CES) during upgrades from IBM Spectrum Scale v4.2.1.x to IBM Spectrum Scale v4.2.2.0 leading to NFSv3 access loss if the SHORT_FILE_HANDLE option is set to True.

    Problem summary

    NFS configuration of IBM Spectrum Scale v4.2.1.x requires the SHORT_FILE_HANDLE option set to True in order to maintain compatibility with VMware. However, with IBM Spectrum Scale v4.2.2.0 and later, SHORT_FILE_HANDLE option must be set to False. An upgrade from IBM Spectrum Scale v4.2.1.x to v4.2.2.0 or higher level will result in loss of NFSv3 access to NFS cluster export services (CES) until NFS SHORT_FILE_HANDLE is set to False. An upgrade to IBM Spectrum Scale v4.2.3.3 or later may require a re-mount of NFSv3 for which no parameter change is required (parameter is removed).

    See the complete Flash at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010628

     

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-09-22T20:04:50Z  

    Flash (Alert):  IBM Spectrum Scale (GPFS) AFM incorrectly replicates data when write and truncate operations are interleaved

    Abstract:

    IBM has identified an issue with AFM in IBM GPFS (V3.5.0.0 through V3.5.0.34, or V4.1.0.0 through V4.1.0.8), or IBM Spectrum Scale (V4.1.1.0 through V4.1.1.16, or V4.2.0.0 through V4.2.3.4) levels where AFM might not transfer write operations completely when a file is truncated. This may cause a data mismatch between cache (or primary) and home (or secondary). This issue may result in undetected data corruption at home (or secondary).

     

    See the complete Flash at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010629

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-10-03T22:17:54Z  

    Technote (Troubleshooting):  IBM Spectrum Scale: SMB cluster export services (CES) must not be upgraded concurrently

    Problem (Abstract):
    SMB cluster export services (CES) within IBM Spectrum Scale must not be upgraded concurrently nor have differing versions of the gpfs.smb rpm active across multiple CES nodes at once.

     

    See the complete Technote at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010619

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-10-03T22:19:03Z  

    Flash (Alert): IBM Spectrum Scale: Quick restart of ctdb under SMB load can lead to a race condition

    Abstract:
    IBM has identified an issue with IBM Spectrum Scale V4.2.0.x in which a quick restart of ctdb under SMB load can lead to a race condition that keeps ctdb stuck in an endless recovery. This can occur during upgrade or by rapidly bringing the SMB service online / offline.

     

    See the complete Flash at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010618

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-10-09T19:15:23Z  

    Flash (Alert):  IBM Spectrum Scale (GPFS) V4.1 and 4.2 levels: network reconnect function may result in file system corruption or undetected file data corruption

    Abstract
    IBM has identified a problem with IBM Spectrum Scale (GPFS) V4.1 and V4.2 levels, in which resending an NSD RPC after a network reconnect function may result in file system corruption or undetected file data corruption.


    See the complete Flash at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010668

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-10-09T19:16:18Z  

    Technote (Troubleshooting):  IBM Spectrum Scale support:  mmchfs -V full command will fail on upgrade from file system 2.2

    Problem (Abstract):
    If your file system version is still at the 2.2 level, then running mmchfs -V full on certain levels of IBM Spectrum Scale will cause the mmchfs command to fail.  The file system will be unusable until the fix is applied.

     

    See the complete Technote at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010654

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-11-28T13:30:25Z  

    Security Bulletin: Vulnerabilities in Samba affect IBM Spectrum Scale SMB protocol access method (CVE-2017-12163, CVE-2017-12151, CVE-2017-12150)

    Summary

    Vulnerabilities in Samba affect IBM Spectrum Scale SMB protocol access method that:
    - could allow a remote authenticated attacker to obtain sensitive information, caused by a memory leak over SMB1 (CVE-2017-12163)
    - could provide weaker than expected security, caused by the failure to properly sign and encrypt DFS redirects when the max protocol for the original connection is set as ''SMB3'' (CVE-2017-12151)
    - could allow a remote attacker to obtain sensitive information, caused by the failure to require SMB signing in SMB1/2/3 connections (CVE-2017-12150)

     

    See the complete bulletin at http://www-01.ibm.com/support/docview.wss?uid=ssg1S1010703

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-11-30T22:25:06Z  

    Technote (troubleshooting): IBM Spectrum Scale v4.2.x may experience cluster hangs, unacceptably high CPU load spikes, or high Command Line Interface command execution time on IBM System z14

    Problem (Abstract)

    Core components of Spectrum Scale initialize and use encrypted communication. This communication is happening whenever certain Spectrum Scale commands are performed, even when the system appears to be idle. Depending on the IBM System z14 configuration, cluster hangs may occur. In addition, encryption initialization may temporarily spike CPU usage to 100% and response times will slow down to unreasonable speeds.

    IBM has corrected the issues in IBM Spectrum Scale v4.2.3.6 and later releases for zLinux only.

     

    See the complete Technote at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010859

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2017-12-12T14:41:38Z  

    Technote (troubleshooting): IBM Spectrum Scale: Using O_DIRECT and fork(2) in the same process in Linux

    Problem(Abstract):
    IBM Spectrum Scale: Using O_DIRECT and fork(2) in the same process in Linux

    Symptom:
    System call read() may fail to record data into the user buffer when direct I/O is used, that is, when specifying the O_DIRECT flag when opening the file.

     

    See the complete Technote at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1010878

     

  • gpfs@us.ibm.com
    gpfs@us.ibm.com
    662 Posts

    Re: IBM Spectrum Scale V4.2.1 announcements

    ‏2018-02-02T18:00:52Z  

    Flash (Alert):  IBM Spectrum Scale (GPFS):  Undetected corruption of archived sparse files (Linux)

    Abstract

    IBM has identified an issue with IBM GPFS and IBM Spectrum Scale for Linux environments, in which a sparse file may be silently corrupted during archival, resulting in the file being restored incorrectly.

     

    See the complete Flash at:  http://www.ibm.com/support/docview.wss?uid=ssg1S1012054