ECS: NFS migration to ECS using rsync shows error: rsync: [generator] failed to set times on "/tmp/T/.": Read-only file system (30)

Summary: A NFS migration to ECS Bucket with retention / autocommit enabled is showing errors.

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Symptoms

  • RSYNC is being used for migration from a NFS host filesystem to ECS File system enabled bucket.
  • the ECS bucket is having retention and autocommit enabled (n days)
  • Errors occurring after migration in last step made a chown on target directory with rsync.
rsync: [generator] failed to set times on "/tmp/T/.": Read-only file system (30)
rsync: [generator] chown "/tmp/T/W2006HHKV0001a" failed: Read-only file system (30)
rsync: [generator] chown "/tmp/T/W2006HHKV0001a/000" failed: Read-only file system (30)
rsync: [generator] chown "/tmp/T/W2006HHKV0001a/000/000" failed: Read-only file system (30)



Cause

ECS NFS buckets with retention / autocommit enabled are used to be WORM (Write Once Read Many) compliant.

The autocommit period is the time interval relative to the object's last modified time during which certain retention constraints (example: file modifications, file deletions, and so on) are not applied. This does not have any effect outside of the retention period.

chown / chmod file system operations are not allowed during the autommit period according to https://dl.dell.com/content/docu98311_ECS_3.5_Administration_Guide.pdf?language=en_US


 

Resolution

The error message is expected since chown is not allowed during autocommit period.
All needed modification not allowed during autocommit period need to be done beforehand the migration.

Affected Products

ECS

Products

ECS Appliance Gen 1, ECS Appliance Gen 2, ECS Appliance Gen 3, Elastic Cloud Storage
Article Properties
Article Number: 000182779
Article Type: Solution
Last Modified: 06 Mar 2022
Version:  4
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