[LU-4682] Accessing migrating directory get IO error.

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.6.0
• Affects Version/s: Lustre 2.6.0
• Severity: 3
• Assignee: Di Wang
• Reporter: Di Wang

Description

John identify some problems for this patch.
1. create a 4 MDTs FS. 2. on the client side, one terminal will do this
mkdir /mnt/lustre/test1 touch /mnt/lustre/test1/a MDTCOUNT=4
while true; do
mdt_idx=$((RANDOM % MDTCOUNT))
../utils/lfs mv -M $mdt_idx /mnt/lustre/test1
done
3. another terminal will do
ls /mnt/lustre/test1 cp /etc/fstab /mnt/lustre/test1
and we can see some IO error during the process.

I will fix this problem in a later patch.

Issue Links

• is related to: LU-2430 Migration tool for DNE