I am seeing this error after an incremental image backup. What can I do to fix this this please?
WARNING: Trimming file failed. Image backup may use too much storage.
My UrBackup Server is running on Debian 10 with a mirrored vdev ZFS pool dedicated solely to UrBackups.
In /var/log/urbackup.log I am seeing these entries related to this warning above.
2020-06-12 01:20:49: Basing image backup on last incremental or full image backup
2020-06-12 01:20:49: Creating writable snapshot of previous image backup…
2020-06-12 01:29:33: WARNING: fallocate failed (setting unused image range) with errno 22
2020-06-12 01:29:33: WARNING: Trimming syscall failed. Stopping trimming.
2020-06-12 01:29:33: WARNING: Trimming file failed. Image backup may use too much storage.
2020-06-12 01:29:34: Transferred 2.74271 GB - Average speed: 44.9153 MBit/s
2020-06-12 01:29:34: Time taken for backing up client M92p: 8m 52s
2020-06-12 01:29:34: Backup succeeded
Any help will be appreciated