[LU-13610] ldiskfs_dx_add_entry large directory

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.12.3
• Type: Bug
• Priority: Minor
• Reporter: Paul Edmon
• Assignee: WC Triage
• Resolution: Not a Bug

Environment

CentOS7

• Severity: 3

Description

We are seeing a lot of warnings in our MDT logs:
May 28 19:24:13 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2628: Large directory feature is not enabled on this filesystem
May 28 19:24:14 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2624: inode 71413065: comm mdt00_084: index 2: reach max htree level
2
May 28 19:24:14 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2628: Large directory feature is not enabled on this filesystem
May 28 19:24:14 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2624: inode 71413066: comm mdt01_069: index 2: reach max htree level
2
May 28 19:24:14 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2628: Large directory feature is not enabled on this filesystem
May 28 19:24:15 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2624: inode 71413065: comm mdt02_115: index 2: reach max htree level
2
May 28 19:24:15 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2628: Large directory feature is not enabled on this filesystem
May 28 19:24:17 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2624: inode 71413066: comm mdt02_036: index 2: reach max htree level
2
May 28 19:24:17 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2628: Large directory feature is not enabled on this filesystem
May 28 19:24:21 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2624: inode 71413066: comm mdt03_119: index 2: reach max htree level
2
May 28 19:24:21 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2628: Large directory feature is not enabled on this filesystem
May 28 19:24:21 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2624: inode 71413061: comm mdt00_075: index 2: reach max htree level
2
May 28 19:24:21 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2628: Large directory feature is not enabled on this filesystem
May 28 19:24:25 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2624: inode 71413060: comm mdt03_106: index 2: reach max htree level
2
May 28 19:24:25 holyscratch01mds01 kernel: LDISKFS-fs warning (device dm-4): ldiskfs_dx_add_entry:2628: Large directory feature is not enabled on this filesystem
 

I'm guessing this is related to a directory having too many files in it.  Is there a way to figure out which directory it is?  Can an inode number be correlated back to a filesystem path?

Paul Edmon

Issue Links

• is related to: LU-12892 Large directory feature is not enable...

Comments

[Paul Edmon (Inactive)]

Also we are seeing this:

May 28 21:45:41 holyscratch01mds01 kernel: Lustre: 180976:0:(osd_handler.c:501:osd_ldiskfs_add_entry()) scratch1-MDT0000: directory (inode: 71413065, FID: [0x20001ef38:0x5b48
:0x0]) has reached maximum entry limit

[Paul Edmon (Inactive)]

We found this: https://jira.whamcloud.com/browse/LU-12892, and the lfs fid2path tool.  That solved this issue.  Thanks

[Peter Jones]

Ah great!