[LU-8974] Сhange force_over_256tb lustre mount option to force_over_512tb for ldiskfs

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.10.0
• Assignee: Andreas Dilger
• Reporter: Artem Blagodarenko (Inactive)

Description

Currently attempts of creating ldisk file system with size >256TB finished with message.
"LDISKFS-fs does not support file systems greater than 256TB and can cause data corruption.Use "force_over_256tb" mount option to override."
Before using "force_over_256tb" parameter in production systems lustre file system software should be analyzed to point possible large disks support issues. This issue is about research of some aspects of Lustre software. Finally patch that change "force_over_256tb" to "force_over_512tb" should be landed. This gives ability use ldiskfs partitions <512tb without options.

Issue Links

• is related to: LU-7592 Сhange force_over_128tb lustre mount option to force_over_256b for ldiskfs
• is related to: LU-8465 parallel e2fsck performance at scale
• is related to: LU-8443 Can't create Lustre FS with enabled meta_bg option
• is related to: LU-1365 Implement ldiskfs LARGEDIR support for e2fsprogs
• is related to: LU-12950 Сhange force_over_512tb lustre mount option to force_over_1024tb for ldiskfs
• is related to: LU-8444 Add test for LU-7325 patch
• is related to: LU-8976 Apply patch "libext2fs: fix maximum bg overhead calculation with meta_bg enabled"