On Wed, 3 Feb 2021, BERTRAND Joël wrote:
raid0 and dk0 (raid1) are local disks, dk5 is my qNAP NAS.
Of course. You mentioned it was iSCSI.
legendre# dd if=/dev/zero of=/opt/bacula/test.dd count=100 bs=1m 100+0 records in 100+0 records out 104857600 bytes transferred in 0.313 secs (335008306 bytes/sec)
This is OK.
legendre# dd if=/dev/zero of=/opt/bacula/test.dd count=1000 bs=1m 1000+0 records in 1000+0 records out 1048576000 bytes transferred in 53.680 secs (19533830 bytes/sec) legendre# dd if=/dev/zero of=/opt/bacula/test.dd count=10000 bs=1m 10000+0 records in 10000+0 records out 10485760000 bytes transferred in 1046.321 secs (10021551 bytes/sec)
Can you retry with `iflag=direct oflag=creat,direct' added? -RVP
