[LU-8586] pios_ssf returning ENOSPC due to mixed OST size.

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.10.0
• Affects Version/s: Lustre 2.5.1
• Labels: patch
• Severity: 3
• Assignee: James Nunez (Inactive)
• Reporter: Arshad Hussain

Description

test(pios_ssf) failing intermittently is that the two OST’s are setup with different OST size by TB. The size difference is significant (~200MB). This leads to smaller OST filling up much faster during the pios run. Therefore, any subsequently write to FS now returns and ENOSPC.

Fail case.

/dev/vdc                                     688976      34196    618444   6% /mnt/ost1
/dev/vdd                                     468680      30108    412640   7% /mnt/ost2

Pass case. OST with identical space definition.

/dev/vdc                                     688976      34196    618444   6% /mnt/ost1
/dev/vdd                                     688976      34196    618444   6% /mnt/ost2