When taking an AppAssure for Linux base image/snapshot, while having multipath enabled, you may encounter the following error:
This can happen because the AppAssure snapshot device is being queried by the multipath daemon and is unable to complete the snapshot process because multipath has a handle on the device. This causes the AppAssure snapshot to fail.
The AppAssure snapshot device is a device that AppAssure creates to mirror the data on disk, while taking a snapshot. You can see a list of snapshot devices, which are only available during the snapshot, by running the following command (The snapshot device would be /dev/sbd0 and /dev/sbd1. ):
To fix this issue, you can modify the multipath configuration file to blacklist the AppAssure snapshot devices, which will always start with sbd* .
1. Edit the multipath configuration file:
2. Add to the blacklist section or create it if it does not already exist: