[2.2.5-only] Make 'rmmod zfs' work after zfs-2.2.4 #16406
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db65272 was added to zfs-2.2.4 to stub in the VDEV_PROP_RAIDZ_EXPANDING enum without adding the RAIDz expansion feature. This was needed to provide the right enum count for when the VDEV_PROP_SLOW_IO proprieties got added. This had the unfortunate side effect of breaking module removal though. Specifically, with the VDEV_PROP_RAIDZ_EXPANDING stub added, the module would correctly omit making kobjects for the RAIDz expansion vdev property, but then would try to blindly remove its non-existent kobjects during module unload. This commit fixes the issue by checking for an uninitialized kobject. Fixes: openzfs#16249 Signed-off-by: Tony Hutter <hutter2@llnl.gov>
behlendorf
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Aug 1, 2024
ixhamza
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Aug 2, 2024
mcmilk
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Aug 2, 2024
ptr1337
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Aug 4, 2024
db65272 was added to zfs-2.2.4 to stub in the VDEV_PROP_RAIDZ_EXPANDING enum without adding the RAIDz expansion feature. This was needed to provide the right enum count for when the VDEV_PROP_SLOW_IO proprieties got added. This had the unfortunate side effect of breaking module removal though. Specifically, with the VDEV_PROP_RAIDZ_EXPANDING stub added, the module would correctly omit making kobjects for the RAIDz expansion vdev property, but then would try to blindly remove its non-existent kobjects during module unload. This commit fixes the issue by checking for an uninitialized kobject. Fixes: openzfs#16249 Signed-off-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Ameer Hamza <ahamza@ixsystems.com> Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
tonyhutter
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db65272 was added to zfs-2.2.4 to stub in the VDEV_PROP_RAIDZ_EXPANDING enum without adding the RAIDz expansion feature. This was needed to provide the right enum count for when the VDEV_PROP_SLOW_IO proprieties got added. This had the unfortunate side effect of breaking module removal though. Specifically, with the VDEV_PROP_RAIDZ_EXPANDING stub added, the module would correctly omit making kobjects for the RAIDz expansion vdev property, but then would try to blindly remove its non-existent kobjects during module unload. This commit fixes the issue by checking for an uninitialized kobject. Fixes: #16249 Signed-off-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Ameer Hamza <ahamza@ixsystems.com> Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de>
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Motivation and Context
Fix broken
rmmod zfsfrom zfs-2.2.4: #16249Description
db65272 was added to zfs-2.2.4 to stub in the VDEV_PROP_RAIDZ_EXPANDING enum without adding the RAIDz expansion feature. This was needed to provide the right enum count for when the VDEV_PROP_SLOW_IO proprieties got added. This had the unfortunate side effect of breaking module removal though.
Specifically, with the VDEV_PROP_RAIDZ_EXPANDING stub added, the module would correctly omit making kobjects for the RAIDz expansion vdev property, but then would try to blindly remove its non-existent kobjects during module unload.
This commit fixes the issue by checking for an uninitialized kobject.
How Has This Been Tested?
Verified multiple module unload/reload cycles on Almalinux 9.
Types of changes
Checklist:
Signed-off-by.