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Forum Discussion
RN314 with 2 EDA500, new volume sync causes system lockup
When creating a new volume on my second EDA500, the sync process will eventually cause a system lockup. My indication that this has occurred is the progress information on the LED screen of my RN314 ...
So I purged my snapshots to increase available capacity and ran volume maintenance on my two existing volumes. The second volume running on my EDA500 caused the same lock-up during my first attempt at Scrubbing the volume. The second attempt to Scrub succeeded.
Once maintenance was complete, I recreated the third volume on my second EDA500. It made it 19.3% through the sync before it locked up again.
I am monitoring over ssh now (top) and I can see that there is an increased number of processes stuck in uninterruptible sleep. Most of them appear to be systemd-journal and are waiting on btrfs_sync_file. The sync process itself (md125_resync) is stuck in uninterruptible sleep as well and waiting on raise_barrier.
I'm not sure what else I can do. Would disconnecting one of the EDA500 possibly improve my chances of creating a new volume? I might try that next.
I don't think the second EDA500 has any impact unless there are operations trying to be done concurrently on it.
It's not a good idea to disconnect and re-connect an EDA volume without doing an EXPORT and IMPORT (EXPORT is on the Volume menu, IMPORT is automatic at power-on once the volume is re-connected).
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