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elastio / elastio-snap

kernel module for taking block-level snapshots and incremental backups of Linux block devices
GNU General Public License v2.0
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Snapshot reload doesn't work on AWS EC2 #297

Closed skypodolsky closed 1 year ago

skypodolsky commented 1 year ago

It was reported by @i-krasnoshchokov that the reload functionality doesn't work on the Debian 12 AWS EC2 instance. This issue has been confirmed and its root cause seems to be irrelevant to what was fixed previously.

i-krasnoshchokov commented 1 year ago

Retested on latest elastio-snap a7ac96f on Amazon EC2 instance with Debian on it.

Retesting result: accepted. Drivers state and snapshot state are the same after reboot. cat /proc/elastio-snap-info after reboot:

admin@ip-172-31-19-121:~$ cat /proc/elastio-snap-info
{
        "version": "0.12.2",
        "devices": [
                {
                        "minor": 0,
                        "cow_file": "/cow0",
                        "block_device": "/dev/nvme0n1p1",
                        "max_cache": 314572800,
                        "fallocate": 1167695872,
                        "seq_id": 1,
                        "uuid": "5da138299dbf484e9a754f183aa7e57d",
                        "version": 1,
                        "nr_changed_blocks": 1993,
                        "state": 3,
                        "ignore_errors": 0,
                        "cow_on_bdev": true
                }
        ]
}

Also, after reboot, transition from incremental to snapshot also works correctly.