On Sun, Feb 04, 2018 at 01:27:07PM -0600, Benjamin Kaduk wrote: > On Sun, Feb 04, 2018 at 12:29:30PM +0000, Jose M Calhariz wrote: > > > > Hi, > > > > I am chasing the root problem in my infra-structure of afsdb and > > afs-fileservers. Sometimes my afsdb loses quorum in the middle of a > > It is a pretty disruptive event to lose quorum; do you have any idea > what might be responsible for that happening?
In recent times I have seen two times a "vos release" of a critical volume to fail. I may have wrongly interpreted the error message. So I past it here the last one: Could not release lock on the VLDB entry for volume XXXXXXXXXXX u: major synchronization error Error in vos release command. u: major synchronization error > > > vos operation or the Linux clients time out talking to the > > file servers. To help diagnose the problem I would like to know how > > long is the timeout and if I can change the time out connections in > > the Debian clients and for the vos operations. My plan is to increase and > > The ubik election to determine quorum happens every SMALLTIME (60) > seconds, but normally the current coordinator will retain that role > and operations can span multiple election cycles. > > Most of the timeouts involved (e.g., RX_IDLE_DEAD_TIME and > AFS_RXDEADTIME) are also on the order of a minute. > > I think you'd need to recompile in order to adjust these timeouts, > though. And I really would recommend tracking down why you're > losing quorum before trying to paper over things with longer > timeouts. I am too chasing a second problem where a Debian OpenAFS client fail to comunicate with the fileserver and this problem is frequent. May I think that this timeout is about 60 seconds? And that I need to recompile the client to increase or decrease the timeout? > > -Ben > > > decrease the timeouts in OpenAFS and other timeouts in Linux to > > identify if I have a possible problem with the data network, iSCSI > > network, overload on the hosts of VM, overload on the file servers or > > other possible problem. > > > > The core of my infra-structure are 4 afsdb running Debian 9, and using > > OpenAFS from Debian 1.6.20, on a shared virtualization platform. The > > file-servers running Debian 9 and using OpenAFS from Debian, 1.6.20, > > are VMs in dedicated hosts for OpenAFS on top of libvirt/KVM. > > > > > > Kind regards > > Jose M Calhariz > > > _______________________________________________ > OpenAFS-info mailing list > OpenAFSfirstname.lastname@example.org > https://lists.openafs.org/mailman/listinfo/openafs-info > Kind regards Jose M Calhariz -- -- .adanibober odnes enilgaT .edraugA _______________________________________________ OpenAFS-info mailing list OpenAFSemail@example.com https://lists.openafs.org/mailman/listinfo/openafs-info