Automation Suite
2023.10
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Azure disk not marked as SSD - Automation Suite 2023.10
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Automation Suite on Linux Installation Guide
Last updated Feb 13, 2024

Azure disk not marked as SSD

Description

An Azure known issue incorrectly shows the rotational flag enabled for the Azure SSD disk. As a result, the Azure disk is not marked as SSD, and the following error occurs when trying to configure the Objectstore disk:

ERROR][2022-08-18T05:26:35+0000]: Rotational device: '/dev/sdf' is not recommended for ceph OSDERROR][2022-08-18T05:26:35+0000]: Rotational device: '/dev/sdf' is not recommended for ceph OSD

Solution

To fix this issue and mark the Azure SSD disk as non-rotational, run the following commands:

echo "0" > "/sys/block/{raw_device_name}/queue/rotational"
echo "KERNEL==\"${raw_device_name}\", ATTR{queue/rotational}=\"0\"" >> "/etc/udev/rules.d/99-ceph-raw-osd-mark-ssd.rules"
udevadm control --reload
udevadm triggerecho "0" > "/sys/block/{raw_device_name}/queue/rotational"
echo "KERNEL==\"${raw_device_name}\", ATTR{queue/rotational}=\"0\"" >> "/etc/udev/rules.d/99-ceph-raw-osd-mark-ssd.rules"
udevadm control --reload
udevadm trigger

Example:

echo "0" > "/sys/block/sdf/queue/rotational"
echo "KERNEL==\"sdf\", ATTR{queue/rotational}=\"0\"" >> "/etc/udev/rules.d/99-ceph-raw-osd-mark-ssd.rules"
udevadm control --reload
udevadm triggerecho "0" > "/sys/block/sdf/queue/rotational"
echo "KERNEL==\"sdf\", ATTR{queue/rotational}=\"0\"" >> "/etc/udev/rules.d/99-ceph-raw-osd-mark-ssd.rules"
udevadm control --reload
udevadm trigger
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