Problems with backup seems never ending for my servers.
Every 6 or 7 days a backup error happen:
mount error(5): Input/output error Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
Before and after the error the nas responds correctly at ping (i’ve activated a script to logging ping result every 10 minutes). So isn’t a NAS (mount for other pc work correctly) or a network problem.
The error doesn’t disappears simply doing a reboot. After the reboot it’s impossible mount the NAS shared folder.
The problem disappears only if i update:
yum update
After the update (also without reboot) the NAS shared folder mount correctly.
Anyone have encountered this problem ?
I cannot update the server every day or every six days. The servers are not connected to internet.
I also think it’s a coincidence because a simply reboot of the server doesn’t resolve the problem. So it’s not a block of the cifs service.
I think that is related to an “incomprehension” at “security level”.
The mount from windows system (10 and 7) always work.
The nas is set in SMB 2,1 (compatibility with samba version 1 and 2)
So i think that windows has a better “negotiation algorithm”.
In my mind windows (i don’t really know if it the used algo) if one protocol version or a security type fails, it try another combination.
I start the server and qnap and, “ideally”, for a month or more, they have to work without maintenance. (My setup isn’t connected to internet. Is connected only for update.).
I’ve the same settings for the shared folder.
Also the service SMB settings… Control Panel > Network services > Win/Mac/NFS > Advanced options
Mine it’s a TS-269 Pro, the same of your but with only 2 hd bay.
All cron task i’ve added are daily or minutes based:
Dump of application DB for backup (daily)
Ip Logger (every 10 minutes to monitor the reachability in lan, ping one/ two nas)
Hallo,
have you checked the exact time on NAS AND Nethserver ? Sometimes this is the reason for lost share.
I read, that your nethserver has no connection to internet.
What’s the timeserver for NAS/Nethserver - it should be the same,
And is there no error when time is updating ?
I’ve checked many times… it’s almost the same… after a month the difference is more or less 2-3 second. I think that both server and qnap are equipped with a stable RTC.
When they are connected to internet to do an update the time is also synchronized.