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Release Notes 2.2

  • Release Date: Jan-06-2016

Availability of hot upgrade

  • From 2.0.x to 2.2
  • From 1.7.x to 2.2

Upgrading a replicated system

When upgrading an InfiniBox system that has active replicas:

  • Both source and target systems have to be upgraded
  • The upgrade is carried out by INFINIDAT Support
  • During the upgrade, existing replicas are deleted
  • As the upgrade is carried out by INFINIDAT support, there is no need to initialize the new replicas

Availability of host software products

See the Host Software section on this website.

INFINIDAT Software Compatibility

See the software compatibility section on this website.

What's New in release 2.2

Introducing NAS filesystems

InfiniBox features support for filesystems in addition to the already existing support for volumes. Filesystems and volumes share the backend storage and can co-exist within the same storage pool. This release includes support for NFS protocol version 3 and a lot of the storage capabilities of volumes (e.g. Snapshots, clones, Flash Cache).    

Consistency groups

A consistency group is a group of volumes that maintain write-order fidelity.

The consistency group allows to take snapshots of all of its volumes at the same point-in-time, thus ensuring a consistent image of the volumes at that time. The consistency group is typically used when a single application spans multiple volumes and there is a need to create a point-in-time copy of these volumes. From the application perspective, point-in-time backups of the entire application are crucial for maintaining data integrity.

Encryption of data-at-rest

INFINIDAT utilizes encryption of data-at-rest for regulatory compliance, security audit readiness and other purposes.

Disk encryption-at-rest allows for data protection across all scenarios in which data that is stored in the disks is compromised due to disks removal from the site. With data encryption using Self-Encrypting Drives (SED) and the ability to securely erase a disk, the risk of data exposure is eliminated. 

The InfiniBox storage system can be set to run either with data-at-rest protection or without it. InfiniBox encryption-at-rest uses the standard method of encrypting data, so there is no performance penalty.
This feature is supported only on systems equipped with self-encrypting disks.

InfiniSpares

The Infinispares feature enables the InfiniBox system to keep running even in a situation where dozens of disks have failed across a long period of time. In such a situation, where all of the system spare disks space is consumed, an additional disk failure will cause the system to activate the InfiniSpares feature. 

When the feature is engaged, InfiniBox utilizes unused parts of the remaining drives as spares. At any given time, InfiniBox ensures that the system has an enough spare capacity to hold 2 additional disks failures.

Replication improvements

RPO

The RPO (Recovery Point Objective) is a user-defined maximum lag time between the source and target sites of the replica. This lag is measured as the time that has passed since the current image on the target existed on the source. The RPO state is either OK or Lagging.

Sync now

InfiniBox allows for an extra-curricular synchronization of a replica. The sync now task synchronizes a replicated dataset (volume, or a consistency group) on demand, regardless on the scheduled replica cycle.

Throughput reporting

Querying for the replica now reports on the current replica throughput.

Capacity counters

The capacity that is dedicated for replica staging area. This field is available on both source and target. On the target system it is called staging area size.

Replicating consistency groups

InfiniBox allows to replicate consistency group members while maintaining a consistent replica on the target system.

The consistency group is replicated as a whole. The replica is comprised of a source consistency group and a target consistency group. All of the consistency group's members are replicated, and the replica state of the consistency group abides all of its members.

Replicating to up to 16 systems

This release supports replicating to up to 16 InfiniBox systems (each volume goes to only one InfiniBox system).

Increased number of snapshots and clones per dataset

This release introduces an increase in the number of dataset descendants (snapshots and clones). The increase is as follows:

  • Volume family members: 1000
  • Filesystem family members: 250

Increased flash cache

This release supports up to 86TB of flash cache.

Performance improvements

This release features the following performance improvements:

  • An increase to system maximum IOPS to 900K 
  • A 40% increase in system read from cache.
  • A 25% decrease in write latency
  • A 50% improvement in Rebuild 1 and Rebuild 2 times

Increased number of SCSI-3 reservations

This release features an increase of the maximum number of SCSI-3 reservations per volume to 1,024.

Limitations

  • CS-1958 - When using SRM for InfiniBox, up to 5 replicas can be initiated at the same time. Once the Initialization state of the 5 replicas has finished, and the replicas are running, it is possible to initialize the next 5 replicas, and so on
  • InfiniBox acknowledges all deletions from RAM and asynchronously reclaims the capacity from the drives. This process may take up to 5 minutes to complete.

Issues resolved in this release

The table lists issues along with their priority. The issue priority is indicated by column 'P' with icons as follows:

  •  Critical
  •  Major
  •  Minor
  •  Trivial

P Key fixed in version release notes title release notes description
Major INFINIBOX-18631 2.2.0 A change to the network space rate limit is not reflected on the replication it services

After setting rate limit on a network space, consequent modification to the rate limit do not take effect. (Removal of the limit and re-setting a limit is required.)

Major INFINIBOX-17303 2.2.0 Logging into InfiniBox takes too long in an environment that has over 100 Active Directory servers

When InfiniBox is configured with a large LDAP domain, logging in may take up to 2 minutes.

Major INFINIBOX-15383 2.2.0 The replica source system is not updated upon remote pool and volume name changes.

This issue does not affect the replication itself. It only affects the visibility of the pool and volume names on the UI.

Major INFINIBOX-16933 2.2.0 Upon a node failure, some of the services are shown as Active, while they are actually Degraded.
Major INFINIBOX-16817 2.2.0 A user with Pool Admin role cannot perform replication operations

A user with a Pool Admin role cannot perform operations that involve the remote system (such as replica operations).

Minor INFINIBOX-18727 2.2.0 The system does not allow SMTP user address that ends with '.trust'

The fix includes support for .trust and other new top-level-domains.

Minor INFINIBOX-18732 2.2.0 Email event notifications may have their content added as an attachment instead of part of the message body

On some SMTP servers, event notifications are sent with their content stripped out from the body of the email message and added as an attachment.

Minor INFINIBOX-17498 2.2.0 Resizing a pool generates incorrect events

When the change in capacity is lower than the granularity of capacity display, the event description does not show the change.

Minor INFINIBOX-18282 2.2.0 AIX ODM fails to distinguish controller device from disk

The fix adds "CTRL" in the INQUIRY vendor specific bytes of controller device (LUN 0).

9 issues

More resolved issues:

  • CS-1583, CS-1874, GUI10-3329 - The GUI patch panel displays ports incorrectly
  • CS-2028 - Deleting a volume that was replicated using pre-2.0 Asynchronous Replication, the system reports that the volume cannot be deleted as the volume has snapshots and clones
    • To delete the volume, contact INFINIDAT Support
  • CS-2267 - The GUI dashboard does not display the replication state; the Health screen displays the replication service as Active when the link is Down.

Known issues in 2.2.0

The table lists issues along with their priority. The issue priority is indicated by column 'P' with icons as follows:

  •  Critical
  •  Major
  •  Minor
  •  Trivial

P Key release notes title release notes description
Major INFINIBOX-20384 Changing the role of a replicated dataset from source to target fails if the dataset is mapped

Workaround: unmap the dataset and retry to operation.

Major INFINIBOX-19984 NAS: File truncation may not reclaim space immediately

When a file system space is exhausted and it becomes "locked", truncating a file may not free up the space from the file system until the next file delete/truncate on the file system.

Major INFINIBOX-14604 Link down on the master node may fail the replica management link

When the replication link fails on the system's master node, the data connections failover to the other nodes. The management connection, however, does not failover and becomes unavailable until the link is up again. During this time, although the replication keeps working as usual, the replica state may not be reported correctly and replication provisioning operations cannot be performed.

Major INFINIBOX-16813 In scenarios with large SAN fabric or long initiator latency the system average latency counter may be inflated
4 issues

Events that have changed since release 2.0

Events that are new in this release

(Events that belong to new features are not listed here)

  • DNS_CONFIGURATION_UPDATED
  • NTP_CONFIGURATION_UPDATED
  • REPLICA_LINK_DEGRADED
  • NODE_ACTIVATION_FAILED
  • NODE_DEACTIVATION_FAILED
  • REPLICA_INITIAL_SYNC_ENDED
  • DRIVE_ENCRYPTION_FAILED

Events that were removed in this release

  • CORE_ACTIVATION_REQUESTED
  • NETWORK_SPACE_MODIFIED
    • Replaced with: NETWORK_SPACE_CONFIG_CHANGED
  • NETWORK_SPACE_CONFIG_CHANGED
    • Replaced with NETWORK_SPACE_INTERFACES_MODIFIED, NETWORK_SPACE_SERVICE_MODIFIED
  • NODE_DEACTIVATION_REQUESTED

 

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