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My system had this disk configuration running 14.04 without issue:
1 SATA SSD ext4 on internal 6Gb SATA port was /dev/sda with 14.04 OS installed.
3 SATA disks (zfs raidz) on internal 3Gb SATA ports was /dev/sd[bcd]
8 SATA disks ext4 on LSI Megaraid 9240-8i in IT mode was /dev/sd[efghijkl]
Upgrade to 16.04.1 LTS now looks like this:
1 SATA SSD ext4 on internal 6Gb SATA port is now /dev/sdi with 16.04.1
installed.
3 SATA disks (zfs raidz) on internal 3Gb SATA ports is now /dev/sd[jkl]
8 SATA disks ext4 on LSI Megaraid 9240-8i in IT mode are /dev/sd[abcdefgh]
The sytem boots, but any utils e.g. smartd, hdparm etc. referencing
/dev/sda are now fubared.
Booting a 12.04 LiveCD enumerates the disks correctly.
Booting a 16.04 Lice CD enumarates the disks incorrectly as described above.
I'm pointing the blame for this at mpt3sas.ko (kernel module loaded for
the LSI hba) which was previously mpt2sas.ko
This bug is completely repeatable on every boot.
See attached:
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment mpt3sas upgrade-software-version
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Upgrade to 16.04.1 LTS incorrect disk enumeration
https://bugs.launchpad.net/bugs/1621699
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