Hello, F12 with qemu-kvm updated components. Also installed virt-manager 0.8.1 from updates-testing repo.
I have a CentOS 5.4 guest x86_64. If I remember well (probably from the kvm test day for which I don't find the full log I found at time...), hot add of scsi disk should work if there is already a scsi disk into the guest (and if the guest supports it). I presume CentOS 5.4 supports in general hot add of scsiu disks, as I do this sometimes to SAN connected disks. So I have this pre-condition with an sda device already configured and used on a running guest. I add a new scsi disk, but I don't see any new disk in guest. I have acpihp kernel module loaded in guest. >From posts in other mailing lists it seems that probably I should also have pci_hotplug kernel module, but I don't find it under 2.6.18-164.6.1.el5 kernel .... When I add the disk from virt-manager (it doesn't say that it will be operational after next reboot, btw) I see a new controller in guest and not a new disk attached to the same controller.... and in dmesg: sym1: <895a> rev 0x0 at pci 0000:00:06.0 irq 11 sym1: No NVRAM, ID 7, Fast-40, LVD, parity checking sym1: SCSI BUS has been reset. scsi2 : sym-2.2.3 and in messages: Dec 10 17:21:04 c54vm1 kernel: PCI: Ignore bogus resource 6 [0:0] of 0000:00:02.0 Dec 10 17:21:04 c54vm1 kernel: decode_hpp: Could not get hotplug parameters. Use defaults Dec 10 17:21:04 c54vm1 kernel: PCI: Enabling device 0000:00:06.0 (0000 -> 0003) Dec 10 17:21:04 c54vm1 kernel: ACPI: PCI Interrupt 0000:00:06.0[A] -> Link [LNKB] -> GSI 11 (level, high) -> IRQ 11 Dec 10 17:21:04 c54vm1 kernel: sym1: <895a> rev 0x0 at pci 0000:00:06.0 irq 11 Dec 10 17:21:04 c54vm1 kernel: sym1: No NVRAM, ID 7, Fast-40, LVD, parity checking Dec 10 17:21:04 c54vm1 kernel: sym1: SCSI BUS has been reset. Dec 10 17:21:04 c54vm1 kernel: scsi2 : sym-2.2.3 But fdisk -l gives no added scsi disk. tried also with: [r...@c54vm1 ~]# echo "- - -" > /sys/class/scsi_host/host2/scan but nothing. [r...@c54vm1 ~]# find /sys -iname "*scan" gives /sys/class/scsi_host/host2/scan /sys/class/scsi_host/host0/scan /sys/devices/pci0000:00/0000:00:04.0/host0/target0:0:0/0:0:0:0/rescan in /sys filesystem, this is the situation about the newly added controller [r...@c54vm1 ~]# ll /sys/devices/pci0000\:00/0000\:00\:06.0/host2/ total 0 drwxr-xr-x 2 root root 0 Dec 10 17:21 power lrwxrwxrwx 1 root root 0 Dec 11 15:23 scsi_host:host2 -> ../../../../class/scsi_host/host2 lrwxrwxrwx 1 root root 0 Dec 11 15:23 spi_host:host2 -> ../../../../class/spi_host/host2 --w------- 1 root root 4096 Dec 11 15:23 uevent while for the controller related to sda: [r...@c54vm1 ~]# ll /sys/devices/pci0000\:00/0000\:00\:04.0/host0/ total 0 drwxr-xr-x 2 root root 0 Dec 10 12:57 power lrwxrwxrwx 1 root root 0 Dec 10 12:57 scsi_host:host0 -> ../../../../class/scsi_host/host0 lrwxrwxrwx 1 root root 0 Dec 10 12:57 spi_host:host0 -> ../../../../class/spi_host/host0 drwxr-xr-x 4 root root 0 Dec 10 12:57 target0:0:0 --w------- 1 root root 4096 Dec 10 12:57 uevent any hint or clarification about current hot add of scsi (or virtio) disks? And also about suggested disk type (ide vs scsi vs virtio) in case of RHEL/CentOS 4 and 5 guests with F12 hosts. Thanks in advance, Gianluca _______________________________________________ Fedora-virt mailing list [email protected] https://www.redhat.com/mailman/listinfo/fedora-virt
