[LU-13357] striped directory doesn't support lookup

Duplicate — Sun, 8 Aug 2021 06:43:54 +0000

The dt_index_operations::dio_lookup() function is not implemented for striped directory, which will cause subdirectory mount from a striped directory fail.

# cd /system/

### Setup test directories
# lfs mkdir -c 1 -i 0 dir-mdt0-nostripe
# lfs mkdir -c 1 -i 1 dir-mdt1-nostripe
# lfs mkdir -c 2 dir-stripe
# mkdir dir-mdt0-nostripe/mountme
# mkdir dir-mdt1-nostripe/mountme
# mkdir dir-stripe/mountme

### Attempt mounts
# cd /tmp/lustremnt
# mkdir mount-dir

### Successful mounts from the non-striped directories on either MDT
# mount -t lustre 10.6.254.71@o2ib2:10.6.254.72@o2ib2:10.6.254.76@o2ib2:10.6.254.77@o2ib2:/testsys/dir-mdt0-nostripe/mountme mount-dir
# umount
# mount -t lustre 10.6.254.71@o2ib2:10.6.254.72@o2ib2:10.6.254.76@o2ib2:10.6.254.77@o2ib2:/testsys/dir-mdt1-nostripe/mountme mount-dir
# umount

### Fails to mount from striped directory
# mount -t lustre 10.6.254.71@o2ib2:10.6.254.72@o2ib2:10.6.254.76@o2ib2:10.6.254.77@o2ib2:/testsys/dir-stripe/mountme mount-dir

mount.lustre: mount 10.6.254.71@o2ib2:10.6.254.72@o2ib2:10.6.254.76@o2ib2:10.6.254.77@o2ib2:/testsys/dir-stripe/mountme at /mnt/mount-dir failed: No such file or directory
Is the MGS specification correct?
Is the filesystem name correct?
If upgrading, is the copied client log valid? (see upgrade docs)

Whamcloud Community JIRA

[LU-13357] striped directory doesn't support lookup