Exalytics - After Configuring Flash Using Configure_Flash.sh script and Rebooting Server "/u02" Mount Missing

Asset ID:	1-72-2213297.1
Update Date:	2016-12-19
Keywords:

Solution Type Problem Resolution Sure

Solution 2213297.1 : Exalytics - After Configuring Flash Using Configure_Flash.sh script and Rebooting Server "/u02" Mount Missing

Applies to:

Exalytics In-Memory Machine X5-4 - Version All Versions and later
Linux OS - Version Oracle Linux 6.6 and later
Information in this document applies to any platform.

Symptoms

Rebooted server after configuring flash by running the Configure_Flash.sh script on an Exalytics, Release 2.0.0.0 server with Linux 6. After reboot the /u01 mount is missing.

df -h command below does not show "/u02" mount point:

[root@server ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
1004G 9.0G 944G 1% /
tmpfs 1010G 4.0K 1010G 1% /dev/shm
/dev/sda1 485M 63M 397M 14% /boot
/dev/mapper/VolGroup01-LogVol00
3.3T 1.1T 2.0T 35% /u01

On "/dev/nvme0n1” disk all partitions are lost as shown below:

[root@server ~]# parted /dev/nvme0n1
GNU Parted 2.1
Using /dev/nvme0n1
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print
Model: Unknown (unknown)
Disk /dev/nvme0n1: 1600GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number Start End Size File system Name Flags

(parted) quit

This problem can occur on any Exalytics, Linux 6 server with Release 2.0.0.0.0 or Release 2.0.0.1.0.

Cause

During the initial execution of configure_flash.sh script something caused corruption in the partitioning of flash cards.

Solution

To resolve this issue, apply below patches:

1) <Patch 24427676> FAI : FLASH CONFIGURATION FAILED AND DID NOT CREATE /U02 (Patch)

2) <Patch 24901336> PATCH CREATION FOR BUG # 21474262 AND 24691425 (Patch)

These patches provide updated flash utilities and updated configure_flash.sh and exalytics_CheckFlash.sh scripts. After applying the patches re-run configure_flash.sh to clean up the corrupt partitions and re-configure flash and mount /u02 successfully.

Reboot the server and confirm that "/u02" mount point is present (i.e. run "df -h" command).

References

<BUG:25070488> - EXALYTICS X5-4 /U02 MOUNT MISSING AFTER FLASH CONFIGURATION
<BUG:24427676> - FAI : FLASH CONFIGURATION FAILED AND DID NOT CREATE /U02

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