v0.12.2

About this release

This release introduces the support of the direct IO functionality and resolves issues with data integrity. Supported kernels: v3.10 - v6.2

What's Changed

• Flush bio requests before the module unload
• Add default bio path if orig mrf is not found
• Implement direct read/write IO
• Add retry logic on elastio_snap_destroy
• Fix the issue with the COW file lock
• Add tests to cover the immutable cow file functionality
• Tests and behavior for redirected cow file
• Added support of Amazon Linux 2023
• Fix for the Linux Kernel v6.2 (Fedora 37/38)
• Fix cow file size in /proc/elastio-snap-info
• Create cow file precisely according to the user setting

Full Changelog: v0.12.1...v0.12.2

0.12.1

About this release

This release brings Linux kernel 6.0 support and Fedora 37 support and API change to control behavior of a snapshot device in the failed state in read.

What's Changed

0.12.1:

• Fixed module compilation on Linux 6.0.14 for complete Fedora 37 support
• Implemented 6.0.X Linux kernel support
• Added sytemd shutdown script for consistency of the rootfs in snapshots

0.12.0:

• Simplified error handling, got rid of sd_memory_fail_code and sd_cow_fail_state snapshot struct members
• Added arg to some IOCTLs and lib functions to switch off IO errors on read of a snap device in the failed state
  This helps to avoid SIGBUS in upper userspace application when using snapshot device as memory-mapped file

Full Changelog: v0.11.1...v0.12.1

0.11.1

About this release

This is the 1st release since elastio-snap was forked from dattobd of 0.10.11.

In general, all the changes are related to the support of the new Linux kernel versions and stability improvements. There was a breaking change in the kernel in 5.8 and 5.9 versions.

The main 3 significant changes

• Supported kernels up to 5.18 with support for corresponding Linux distributions (see support platform matrix).
• Added support of arm64 architecture.
• Fixed memory overflow when working with slow storages. Finally, elastio-snap can now be used with AWS ec2 instances and with similar cloud instances in the Azure and Google Cloud.

What's Changed

0.11.1:

• Fixed memory overflow on slow storage by splitting large bio requests in advance, if necessary
• Fixed module compilation on 5.19.13
• Fixed issue with sync when CoW is full on Fedora 35
• Shared all API to elioctl CLI: added commands info and get-free-minor
• Fixed functionality of the redirected CoW file to another partition
• Fixed rootfs mount on boot by typo fix in initramfs script
• Adjusted appearance of errors in /proc/elastio-snap-info
• Added support for CentOS Stream 9
• Fixed refcnt become -1 at the snapshot creation on XFS
• Fixed attempt to access beyond end of device
• Fix slab cache kernel warnings on rmmod
• Fixed driver stuck processing BIOs on ext4 RAID1 volume on Debian 9
• Fixed kernel panic on snapshot destroy for a partition (not a disk)

0.11.0:

• Added support of Linux kernel 5.18 as on Fedora 36
• Fixed data corruption if bio request was split (LVM/RAID)
• Added support for LVM and software RAID on Linux kernels 5.8+
• Modified tests to cover ext2/3/4, XFS filesystems
• Fixed syscall table location and dormant snapshots functionality after umount/mount
• Added support of arm64 architecture
• Fixed default library installation path and added permissions check before build
• Added package repositories for Fedora 36 and Ubuntu 22.04
• Supported Linux kernel 5.16 - 5.17
• Fixed ability to take snapshots from the multiple devices at one time on kernels 5.9+
• Added functionality to allow COW file to be located on non-protected volume
• Fixed memory leak on free of cloned bio
• Fixed system crash during memory overflow

0.10.16:

• Fix for the module loading after installation by DKMS v. 3.0+
• Linux kernel 5.11 - 5.15 support
• Support CentOS 8.4 with the Linux kernel 4.18.0-305
• Fix device busy error on immediate command right after snapshot creation

0.10.15:

• Update from upstream: Additional fix for multipage bios in kernel 5.4
• Update from upstream: Corruption fix found on CentOS 6/7
• Linux kernel 5.9 and 5.10 support
• Linux kernel 5.8 support

Full Changelog: v0.10.11...v0.11.1