Resolve retryable I/O failure - STC errors (ShadowProtect Snapshot Driver)

Written By Tami Sutcliffe (Super Administrator)

Updated at August 23rd, 2021

Problem

Received these errors:

Got a retryable I/O failure at byte 12345678 (will retry): [13:21: The device is not ready.]

30000: The system cannot find the path specified.

30000: Failed to get information for file '\\?\STC_SnapShot_Volume

Error Logs

The error you will see in the logs will look something like this: 

2015-08-25 00:01:26 INFO: [CONN#:1000] Finished directory index prefetch for ABC customer [E:\VolumeImages]; total of 2 directories

 2015-08-25 21:00:12 INFO: |--> Got a retryable I/O failure at byte 8,937,275,392 (will retry): [13:21: The device is not ready.]

 If you scroll down the error logs, you will then see these additional error messages: 

2015-08-25 21:06:31 ERROR: 30000: The system cannot find the path specified. [3 (0x3)] {eFS:ClieBackup:2200}

 2015-08-25 21:06:31 WARN: 30000: Failed to get information for file '\\?\STC_SnapShot_Volume_21_5\VolumeImages\C_VOL-b001-i017-cd-cm.spi.bitmap': The system cannot find the path specified.

 

Indicators

Note that the time the first error started was a few seconds after the top of the hour:

2015-08-25 21:00:12

 

The third message provides all of the information needed to resolve the error:

WARN: 30000: Failed to get information for file '\\?\STC_SnapShot_Volume_21_5

 

STC stand for the Shadowprotect Snapshot Driver. The Axcient cloud backup was working properly but Shadowprotect then simultaneously began a pre-scheduled backup. The ShadowProtect backup deleted the current snapshot when it created one of its own and, in doing so, deleted the snapshot which the Axcient cloud backup was previously using.

 

Solution:

  1. First, turn off the VSS snapshots in the Axcient Backup Manager. Do this by clicking Options > Backup and then scrolling down to Volume Shadow Copy Mode. Change this setting to Off.
  2. If that does not work, adjust the backup schedules. Allow ample time for the Axcient cloud backup to finish before the scheduled Shadowprotect backup begins.

Eample:

CopyMode