** Changed in: zfs-linux (Ubuntu)
Status: Fix Committed => Fix Released
** Changed in: spl-linux (Ubuntu)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1856704
Title:
backport 5.3 zfs support to bionic for HWE kernel support
Status in spl-linux package in Ubuntu:
Fix Released
Status in zfs-linux package in Ubuntu:
Fix Released
Status in spl-linux source package in Bionic:
Fix Released
Status in zfs-linux source package in Bionic:
Fix Released
Bug description:
== SRU Justification Bionic ==
The HWE 5.3 kernel requires ZFS + SPL to support dkms module build
functionality for kernels 4.15 through to 5.3. Basically, the ZFS+SPL
compat commits between 4.15 and 5.3 are required to allow the modules
to build on kernels upto and include the HWE 5.3 kernel.
== The Fix ==
Backport of upstream commits:
SPL:
- 0002-fix-spl-build-shrinker-callback-check.patch
- 0003-remove-deprecated-set-fs-pwd-check.patch
- 0004-Linux-4.18-compat-inode-timespec-timespec64.patch
- 0005-Linux-4.20-compat-current_kernel_time.patch
- 0006-Linux-4.18-compat-Use-ktime_get_coarse_real_ts64.patch
- 0007-Linux-5.0-compat-Use-totalram_pages.patch
- 0008-Linux-5.0-compat-Fix-SUBDIRs.patch
- 0009-Linux-4.20-compat-Fix-VERIFY-RW_READ_HELD-hash-mh_co.patch
- 0010-Linux-5.1-compat-get_ds-removed.patch
- 0011-Linux-5.0-compat-Use-totalhigh_pages.patch
- 0012-Linux-5.2-compat-rw_tryupgrade.patch
- 0013-Linux-5.3-compat-rw_semaphore-owner.patch
- 0014-Linux-5.3-compat-retire-rw_tryupgrade.patch
- 0015-Linux-5.3-compat-Makefile-subdir-m-no-longer-support.patch
- 0016-Linux-compat-4.16-SECTOR_SIZE.patch
- 0017-Linux-compat-spl-timespec_sub.patch
- 0018-deprecate-splat-rwlock-test6.patch
ZFS:
- 3300-Linux-4.16-compat-inode_set_iversion.patch
- 3301-Linux-4.16-compat-use-correct-_dec_and_test.patch
- 3302-Linux-4.16-compat-get_disk_and_module.patch
- 3303-Linux-compat-4.16-blk_queue_flag_-set-clear.patch
- 3304-Linux-4.18-compat-inode-timespec-timespec64.patch
- 3305-Linux-4.14-compat-blk_queue_stackable.patch
- 3306-Linux-4.19-rc3-compat-Remove-refcount_t-compat.patch
- 3307-Linux-5.0-compat-access_ok-drops-type-parameter.patch
- 3308-Linux-5.0-compat-Use-totalram_pages.patch
- 3309-Linux-5.0-compat-Convert-MS_-macros-to-SB_.patch
- 3310-Linux-5.0-compat-Fix-SUBDIRs.patch
- 3311-Linux-5.0-compat-Disable-vector-instructions-on-5.0-.patch
- 3312-Linux-5.0-compat-Fix-bio_set_dev.patch
- 3313-Linux-5.0-compat-Remove-incorrect-ASSERT.patch
- 3314-Linux-5.0-compat-Use-totalhigh_pages.patch
- 3315-Linux-5.0-compat-ASM_BUG-macro.patch
- 3316-Linux-5.2-compat-rw_tryupgrade.patch
- 3317-Linux-5.2-compat-Directly-call-wait_on_page_bit.patch
- 3318-Linux-5.3-compat-Makefile-subdir-m-no-longer-support.patch
- 3319-Linux-5.3-Fix-switch-fall-though-compiler-errors.patch
- 3320-zpios-deprecate-current-kernel-time.patch
- 3321-add-compat-check-disk-size-change.patch
== Testcase ==
Without these commits users who install kernels and kernel headers
from 4.16 through to 5.3 inclusive won't be able to build spl + zfs in
Bionic because of the lack of the kernel compat fixes. With the
commits, zfs + spl dkms modules can build cleanly and pass the ubuntu
ZFS regression tests found in the kernel team autotests git
repository.
== Risk ==
This is a sizeable backport that touches a fair amount of spl + zfs
kernel interfacing code. There is a risk that the backport may cause a
regression in functionality that has not been exercised by the ZFS
regression tests. This backport with the zfs regression testing
ensures that no regression in core zfs functionality has been found.
It must be noted that most of the patches are upstream compat fixes
that are known to be working with the latest ZFS that is being used in
focal, so we are confident the original compat changes work.
Note that these updates have all been build tested on x86-64, arm64
and s390x systems with kernels from 4.16 to 5.3 and regression tested
with the ubuntu zfs regression tests.
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