tags 584294 + moreinfo thanks [Replying to a relatively old bug...]
03.06.2010 02:04, Gary Dale wrote: > Package: qemu-kvm > Version: 0.12.4+dfsg-1 > Severity: important > > I know you're going to hate this bug report, but this behaviour is very > consistent. I frequently copy large files from my Squeeze workstation to Not that I hate it, but well, I want to get rid of it, that's for sure :) Or, at the very least, to sort it somewhere. > my Lenny server (NFS) using the Dolphin file manager. While Dolphin is > hardly an exemplar of stability the copy works - despite frequent > short-duration freezes. I haven't tried it with other file managers - I > have an aversion to trying to make the system lock up. :) > > However, when I am running a KVM Windows XP virtual machine on my > Squeeze box, most of the time the machine locks up during the copy. It > doesn't respond to keyboard or mouse and the file copy never completes. > All I can do is hit the reset button. > > One potential candidate issue is that I'm using Samba to share the same > folders as NFS. This has been working for over a decade while I used a > separate Windows XP box. The problem has only cropped up since I started > using qemu-kvm. I'm never accessing the same files at the same time > (there is one share that both the Linux and Windows sessions both > access, but not the same files at the same time). However, the lockups > have even occurred when the XP session doesn't have any shares mapped. Please provide some more information about this issue. In particular, please show the kvm command line you use to start your windows guest. Also, please tell what do you use in windows to copy files (explorer?), and what are source and destinations - local files on windows guest? files on samba server exported from another machine over nfs? where's the samba server running - on the same machine where you're running kvm or on some other machine? I remember seeing issues when accessing files from windowsXP (and windows7 for that matter) that are serviced by samba (running on the kvm host machine) which are located on another machine and exported over nfs. In particular, some executables can't be started, win either locks up for a few minutes and does nothing, or reports that the executable has bad format, or somesuch. Copying that file to kvm host (i.e. removing nfs layer) always helped me in such situations (sure it's wrong solution). So please make sure it is samba+nfs, and not "just" samba, or describe your situation in more details if it's something else. I've no idea what is causing such erratic behavour, but for sure it's not _only_ kvm (if at all), because it should be irrelevant if the files are serviced by nfs server or are stored locally on samba machine - samba should work the same way. However, there also may be some permission issue here - you may not be able to perform some operations with files on nfs, especially when running as root, compared with the case when the same files are stored locally. Also watch for ngroup_max - in nfsv2 and nfsv3 you can't have >16 groups, nfsv4 relaxes this (i had to switch my nfs server to v4 due to this). Thanks! /mjt -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
