Hi everyone, I've got the first time today an error with my backup:
- 5 vms were successfully backuped
- 2 didn't and failed with:
Error: no writers left
- I restarted those two vms and one finished successful but the other didn't, this is the log:
{
"data": {
"mode": "delta",
"reportWhen": "failure"
},
"id": "1621848907079",
"jobId": "d3ada465-98aa-4f30-bf53-289d00249d17",
"jobName": "delta_all",
"message": "backup",
"scheduleId": "5b2e2c96-2919-496f-9a4d-7db06fd28634",
"start": 1621848907079,
"status": "failure",
"infos": [
{
"data": {
"vms": [
"61673574-80c8-ae18-c379-562cc38a7eaf",
"1d2b0597-69c3-9a07-34ea-f45a801affad"
]
},
"message": "vms"
}
],
"tasks": [
{
"data": {
"type": "VM",
"id": "61673574-80c8-ae18-c379-562cc38a7eaf"
},
"id": "1621848910981",
"message": "backup VM",
"start": 1621848910981,
"status": "failure",
"tasks": [
{
"id": "1621848913457",
"message": "snapshot",
"start": 1621848913457,
"status": "success",
"end": 1621848918206,
"result": "6053c653-1c21-12f6-6a4d-56419373bf9c"
},
{
"data": {
"id": "f34266e4-aaf7-4e70-88d1-ae1b811b7e55",
"isFull": true,
"type": "remote"
},
"id": "1621848918208",
"message": "export",
"start": 1621848918208,
"status": "failure",
"tasks": [
{
"id": "1621848918254",
"message": "transfer",
"start": 1621848918254,
"status": "failure",
"end": 1621851676334,
"result": {
"errno": -122,
"code": "Unknown system error -122",
"syscall": "write",
"message": "Unknown system error -122: Unknown system error -122, write",
"name": "Error",
"stack": "Error: Unknown system error -122: Unknown system error -122, write"
}
}
],
"end": 1621851676344,
"result": {
"errno": -122,
"code": "Unknown system error -122",
"syscall": "write",
"message": "Unknown system error -122: Unknown system error -122, write",
"name": "Error",
"stack": "Error: Unknown system error -122: Unknown system error -122, write"
}
}
],
"end": 1621851678754,
"result": {
"message": "no writers left",
"name": "Error",
"stack": "Error: no writers left\n at VmBackup._callWriters (/opt/xo/xo-builds/xen-orchestra-202105071253/@xen-orchestra/backups/_VmBackup.js:118:13)\n at async VmBackup._copyDelta (/opt/xo/xo-builds/xen-orchestra-202105071253/@xen-orchestra/backups/_VmBackup.js:190:5)\n at async VmBackup.run (/opt/xo/xo-builds/xen-orchestra-202105071253/@xen-orchestra/backups/_VmBackup.js:371:9)"
}
},
any ideas what this error means, what could be the root cause? I've googled and searched in the forum for it, but couldn't find anything 
cheers, Ringo
but that is not really a solution, because xoa backup runs every night and i don't want to remove all snapshots from the VMs every time I move them to the other host