We are running Idera's R1 CDP backups manager on an Azure VM and we get disk errors almost every day.
The VM is running Linux, CentOS 6.
In the backups manager we get errors like this:
7/1/14 4:01:34 PM Error replicating device C:\ (CA588057588043E3)
7/1/14 4:01:34 PM Failed to commit changes to block store
7/1/14 4:01:34 PM [1034] exec(): disk I/O error(1034): Input/output error(5)
The server logs show this:
Jul 1 15:22:24 backups03 kernel: hv_storvsc vmbus_0_13: cmd 0x2a scsi status 0x2 srb status 0x86
Jul 1 15:22:24 backups03 kernel: hv_storvsc vmbus_0_13: stor pkt ffff88014d1722c0 autosense data valid - len 20
Jul 1 15:22:24 backups03 kernel: storvsc: Sense Key : Illegal Request [current]
Jul 1 15:22:24 backups03 kernel: storvsc: Add. Sense: Invalid command operation code
Jul 1 15:22:24 backups03 kernel: sd 5:0:0:1: [sdd] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Jul 1 15:22:24 backups03 kernel: sd 5:0:0:1: [sdd] Sense Key : Illegal Request [current]
Jul 1 15:22:24 backups03 kernel: sd 5:0:0:1: [sdd] Add. Sense: Invalid command operation code
Jul 1 15:22:24 backups03 kernel: sd 5:0:0:1: [sdd] CDB: Write(10): 2a 00 43 ad ef c0 00 00 80 00
Jul 1 15:22:24 backups03 kernel: __ratelimit: 6 callbacks suppressed
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933816
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933817
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933818
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933819
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933820
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933821
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933822
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933823
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933824
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Jul 1 15:22:24 backups03 kernel: Buffer I/O error on device sdd1, logical block 141933825
Jul 1 15:22:24 backups03 kernel: lost page write due to I/O error on sdd1
Why is this happening and what can be done to solve this?
Thanks.