Estos contenidos se han traducido de forma automática para su comodidad, pero Huawei Cloud no garantiza la exactitud de estos. Para consultar los contenidos originales, acceda a la versión en inglés.
Centro de ayuda/ Elastic Cloud Server/ Preguntas frecuentes/ Disk Management/ Others/ Why Are Disk Error Logs Printed After a Disk Attached to an ECS Is Formatted with the ext4 File System?
Actualización más reciente 2023-08-08 GMT+08:00
Ver PDF
Compartir

Why Are Disk Error Logs Printed After a Disk Attached to an ECS Is Formatted with the ext4 File System?

Symptom

When a VBD disk is attached to an ECS and the partition is in ext4 format, the following log may be displayed on the console:

blk_update_request: operation not supported error, dev vdb, sector 826298624 op 0x9:(WRITE_ZEROES) flags 0x800 phys_seg 0 prio class 0

Figura 1 Printed logs

Involved OSs: Ubuntu 20.04, CentOS 8.0, CentOS 8.1, and other ECSs whose kernel versions are 4.18 or later

Root Cause

VBD disks do not support the advanced SCSI command WRITE_ZEROES.

If the ECS OS kernel version is 4.18 or later and the disk partition is formatted with the ext4 file system, the WRITE_ZEROES command is delivered. The system does not support the command and prints a log, which has no impact on the ECS performance and you can ignore it.

Tema principal: Others