Fujitsu ETERNUS DX Disk Configuration Manual - Page 12

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Fujitsu ETERNUS DX Disk Configuration Manual
Chapter 3
Notes
3.5

Notes on Creating and Mounting File Systems

3.5
Notes on Creating and Mounting File Systems
If the environment meets all the following conditions, the file system creation command may fail due to an
error.
RHEL7.3 or later, or SLES12 SP2 or later is used
•
ETERNUS DX S3 series is used with firmware version earlier than V10L70
•
A TPV or an FTV with an Allocation setting of "Thick" is used
•
Add the following options according to the file system type and execute the command.
If the file system is ext3/ext4
•
-E discard option
Example:
# mkfs.ext4 -E discard <Device name>
If the file system is xfs
•
-K option
Example:
# mkfs.xfs -K <Device name>
Do not specify the "discard" option when mounting these file systems.
3.6

Notes on Changing the max_sectors_kb Value

Change /sys/block/sdX/queue/max_sectors_kb to a value of 7992 or less when tuning the maximum I/O size.
FUJITSU Storage ETERNUS DX Configuration Guide -Server Connection- (SAS) for Linux
Copyright 2018 FUJITSU LIMITED
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P3AM-3472-14ENZ0