[LU-5937] 'lfs find --size ...' fails to detect striped directories above a given size

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.8.0
• Affects Version/s: Lustre 2.7.0
• Labels: dne2
• Severity: 3
• Assignee: John Hammond
• Reporter: John Hammond

Description

The supporting code for lfs find implicitly assumes a regular file in a few places. See the LL_IOC_LOV_GETSTRIPE, LL_IOC_MDC_GETINFO, IOC_MDC_GETFILEINFO, IOC_MDC_GETFILESTRIPE case of ll_dir_ioctl() where we return the attributes of the master inode

q:lustre# mkdir d0
q:lustre# lfs mkdir -c4 d1
q:lustre# touch d0/f{0..4095} d1/f{0..4095}
q:lustre# stat d0 d1
  File: `d0'
  Size: 184320    	Blocks: 368        IO Block: 4096   directory
Device: 2c54f966h/743766374d	Inode: 180144002274699275  Links: 2
Access: (0755/drwxr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2014-11-19 11:19:46.000000000 -0600
Modify: 2014-11-19 11:20:24.000000000 -0600
Change: 2014-11-19 11:20:24.000000000 -0600
  File: `d1'
  Size: 212992    	Blocks: 8          IO Block: 4096   directory
Device: 2c54f966h/743766374d	Inode: 180144002274699276  Links: 2
Access: (0755/drwxr-xr-x)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2014-11-19 11:19:53.000000000 -0600
Modify: 2014-11-19 11:20:37.000000000 -0600
Change: 2014-11-19 11:20:37.000000000 -0600
q:lustre# lfs find --size +1K .
.
./d0
./d1
q:lustre# lfs find --size +4K .
./d0