January 2007 - xen - Fedora Mailing-Lists

by Felix Schwarz

Hi, my Dom0 is running with Fedora Core 6 and overall I would say it works. But I have a problem with HVM guests: I can start them just after system reboot but they won't start after I worked some time. "xm create" just gives me the error message "VmError: (12, 'Cannot allocate memory')". The error does always appear when my "free" memory (as shown by top) is lower than the amount required by my HVM guest. What I do not understand is why Xen is not able to use memory which is used as cache by the Kernel. It is not uncommon for me to have 2-3 GB memory used as cache but only 20-30 MB free. Furthermore I expected that even SWAP can be used for my Xen guest which are another 2 GB. Is there a workaround/bugreport for this behavior? Is there any hope it can be fixed? fs

17 years, 3 months

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guest debian on fedora host with virt-manager

by benjamin henrion

Hello every body! I have installed Xen on fedora to try virt-manager. All is allright to install an fedora guest. But now i want to install an debian guest . And i don't find the address to have the debian medium. I'have tried this one " http://ftp2.fr.debian.org/debian/" and this one " http://ftp2.de.debian.org/debian/" but it doesn't match... I just know the Fedora medium: http://download.fedora.redhat.com/pub/fedora/linux/core/6/i386/os/ So, please i need the address of the debian medium ... Thanks ! benjamin

17 years, 3 months

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Cannot get xen on RHEL5 to use a RHEL4 repository

by Frazier, Darrell USA CRC (Contractor)

I am running xen on a Dell 2850/ 3.0Ghz/ 12GB RAM/ RHEL5 Beta2 system. I am attempting to create a rhel4 guest. I have copied the rhel4 packages from cd into a directory (/var/www/html/rhel4) and enabled http. I created a repository on the host machine and updated yum to look at that repository using createrepo under /var/www/html/rhel4. I am able to see the repository with a web browser on another machine. My issue comes when I use the http://myhost/rhel4 <http://myhost/rhel4> in the configuration window asking where it asks where the installation media resides. I get the following error: Guest Install Error ERROR: Invalid URL location given: [Errno:14] HTTP Error 404: Not found. I am about at my wits end on how to rectify this issue. Any help would be greatly appreciated. Thanx in advance Darrell J. Frazier Unix System Administrator US Army Combat Readiness Center CAUTION: This electronic transmission may contain information protected by deliberative process or other privilege, which is protected from disclosure under the Freedom of Information Act, 5 U.S.C. § 552. The information is intended for the use of the individual or agency to which it was sent. If you are not the intended recipient, be aware that any disclosure, distribution or use of the contents of this information is prohibited. Do not release outside of DoD channels without prior authorization from the sender. The sender provides no assurance as to the integrity of the content of this electronic transmission after it has been sent and received by the intended email recipient.

17 years, 3 months

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RE: [Fedora-xen] Can't boot RH7.2 fully-virtualized guest

by Hanks, Dan

> > Hanks, Dan wrote: > > MXT page nr start=ffffffff len=ffffffff > > Ooops! Too many entries in the memory map" > > This ends in a kernel panic, complaining: > > "<0> Kernel panic: Attempted to kill the idle task! In idle task - not > > syncing" > > We ran into the same problem. The default kernel for RH7.2 is patched > to support "MXT" (automatic compression to/from RAM), and the HVM bios > confuses it. > > Upgrade the kernel to one that doesn't have MXT (such as > kernel-smp-2.4.20-28.7) and you'll be fine. > > There may also be a boot param to tell the kernel to ignore MXT, which > would likely have the same effect. Dr. Google indicated that setting mem=NNN in the kernel args effectively disables MXT, however when I tried that, I got no kernel panics, but the VM hung shortly after "Uncompressing the kernel" So, I went out and snagged an old kernel SRPM for RH72 from the RedHat archives, added one line to the spec file to swap CONFIG_MXT=y with CONFIG_MXT=n in the kernel configs, rebuilt, mounted up the RH72 disk image, chrooted to it, installed my new rpm in place of the existing rpm, fired it up, and voila, it appears to be working. Thanks much for your help, it pointed me in the right direction! -- Dan

17 years, 3 months

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Can't boot RH7.2 fully-virtualized guest

by Hanks, Dan

Hi folks, I'm using FC6 (kernel 2.6.19-1.2895.fc6xen), with SELinux disabled. I'm running on a Dell D820 laptop with vmx extensions enabled (confirmed by looking for vmx in /proc/cpuinfo), trying to boot a RH7.2 (uh, yeah, don't ask...) fully-virtualized guest. I used virt-manager to successfully install RH7.2 on a disk image. However when I then try to boot from the image, on the console I see: MXT page nr start=ffffffff len=ffffffff Ooops! Too many entries in the memory map" Spewed out a lot of times, followed by some kernel information, ending up with: "Unable to handle kernel paging request at virtual address ffffffff" This ends in a kernel panic, complaining: "<0> Kernel panic: Attempted to kill the idle task! In idle task - not syncing" Here's my config file: # Automatically generated xen config file name = "rh72a" builder = "hvm" memory = "500" disk = [ 'file:/home/user/rh72.xen.img,hda,w', ] vif = [ 'type=ioemu, mac=00:16:3e:57:24:2a, bridge=xenbr0', ] uuid = "c77c61e4-3294-2bc2-7005-92b92d3191d2" device_model = "/usr/lib/xen/bin/qemu-dm" kernel = "/usr/lib/xen/boot/hvmloader" vnc=1 vncunused=1 apic=1 acpi=1 pae=1 vcpus=1 serial = "pty" # enable serial console on_reboot = 'restart' on_crash = 'restart' Am I missing something obvious? Any more info I can provide that would be helpful? Thanks for any help you might offer. -- Dan Hanks

17 years, 3 months

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Re: [Fedora-xen] Unable to start a FC3 domU under FC6 using Fedora bundled Xen packages

by AndreGround

Hi Ninny, thanks for your help. Here's what I get without using the initrd: VFS: Cannot open root device "sda1" or unknown-block(0,0) Please append a correct "root=" boot option Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) Please let me have your considerations. Thanks again, Andrea On 1/25/07, ninny issac <ninyissac(a)gmail.com> wrote: > Hi, > Could you try to use sda1/sda2 instead of xvda1/2. > ie, disk = > ['tap:aio:/xen/mail/fedora.img,sda1,w','tap:aio:/xen/mail/swap1.img,sda2,w'] > Also can you comment out the initrd line from DomU grub: > title Fedora Core 3 > root (hd0,0) > kernel /boot/vmlinuz-2.6.18-1.2869.fc6xen root=/dev/sda1 > # initrd /boot/initrd-2.6.18-1.2869.fc6xenU.img > > The error says that kernel could not find /sbin/init , so just try with the > above configuration. > > > > > > On 1/18/07, AndreGround <andreground(a)gmail.com> wrote: > > Hi, > > here are all my config files & logs taken from my test: > > > > Please note that the kernel used is the one provided by Fedora RPM > Packages. > > The initrd (initrd-2.6.18-1.2869.fc6xenU.img) has been > generated using > > the mkinitrd syntax listed below. > > > > - Test 1) > > > > Xen config file: > > #kernel ="/boot/vmlinuz-2.6.18-1.2869.fc6xen" > > #ramdisk = "/boot/initrd-2.6.18-1.2869.fc6xenU.img" > > memory = 256 > > name = "mail" > > bootloader="/usr/bin/pygrub" > > #vif = ['mac=aa:00:00:00:00:01'] > > disk = > ['tap:aio:/xen/mail/fedora.img,xvda1,w','tap:aio:/xen/mail/swap1.img,xvda2,w'] > > #root = "/dev/sda1 ro" > > #extra = "ro selinux=0 3" > > > > DomU grub: > > title Fedora Core 3 > > root (hd0,0) > > kernel /boot/vmlinuz-2.6.18-1.2869.fc6xen root=/dev/xvda1 > > initrd /boot/initrd-2.6.18-1.2869.fc6xenU.img > > > > DomU fstab: > > # This file is edited by fstab-sync - see 'man fstab-sync' for details > > /dev/xvda1 / ext3 > defaults 1 1 > > none /dev/pts devpts > gid=5,mode=620 0 0 > > none /dev/shm tmpfs > defaults 0 0 > > none /proc proc > defaults 0 0 > > none /sys sysfs > defaults 0 0 > > /dev/xvda2 swap swap > defaults 0 0 > > > > Initrd creation script: > > mkinitrd -f --with=xennet --preload=xenblk > > /xen/mnt/boot/initrd-2.6.18-1.2869.fc6xenU.img > > --fstab=/xen/mnt/etc/fstab 2.6.18-1.2869.fc6xen > > > > Initrd: > > [root@hulk initrd]# cat init > > #!/bin/nash > > > > mount -t proc /proc /proc > > setquiet > > echo Mounting proc filesystem > > echo Mounting sysfs filesystem > > mount -t sysfs /sys /sys > > echo Creating /dev > > mount -o mode=0755 -t tmpfs /dev /dev > > mkdir /dev/pts > > mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts > > mkdir /dev/shm > > mkdir /dev/mapper > > echo Creating initial device nodes > > mknod /dev/null c 1 3 > > mknod /dev/zero c 1 5 > > mknod /dev/systty c 4 0 > > mknod /dev/tty c 5 0 > > mknod /dev/console c 5 1 > > mknod /dev/ptmx c 5 2 > > mknod /dev/rtc c 10 135 > > mknod /dev/tty0 c 4 0 > > mknod /dev/tty1 c 4 1 > > mknod /dev/tty2 c 4 2 > > mknod /dev/tty3 c 4 3 > > mknod /dev/tty4 c 4 4 > > mknod /dev/tty5 c 4 5 > > mknod /dev/tty6 c 4 6 > > mknod /dev/tty7 c 4 7 > > mknod /dev/tty8 c 4 8 > > mknod /dev/tty9 c 4 9 > > mknod /dev/tty10 c 4 10 > > mknod /dev/tty11 c 4 11 > > mknod /dev/tty12 c 4 12 > > mknod /dev/ttyS0 c 4 64 > > mknod /dev/ttyS1 c 4 65 > > mknod /dev/ttyS2 c 4 66 > > mknod /dev/ttyS3 c 4 67 > > echo Setting up hotplug. > > hotplug > > echo Creating block device nodes. > > mkblkdevs > > echo "Loading xenblk.ko module" > > insmod /lib/xenblk.ko > > echo "Loading uhci-hcd.ko module" > > insmod /lib/uhci-hcd.ko > > echo "Loading ohci-hcd.ko module" > > insmod /lib/ohci-hcd.ko > > echo "Loading ehci-hcd.ko module" > > insmod /lib/ehci-hcd.ko > > mount -t usbfs /proc/bus/usb /proc/bus/usb > > echo "Loading jbd.ko module" > > insmod /lib/jbd.ko > > echo "Loading ext3.ko module" > > insmod /lib/ext3.ko > > echo "Loading scsi_mod.ko module" > > insmod /lib/scsi_mod.ko > > echo "Loading sd_mod.ko module" > > insmod /lib/sd_mod.ko > > echo "Loading 3w-xxxx.ko module" > > insmod /lib/3w- xxxx.ko > > echo "Loading xennet.ko module" > > insmod /lib/xennet.ko > > mkblkdevs > > resume /dev/xvda2 > > echo Creating root device. > > mkrootdev -t ext3 -o defaults,ro /dev/xvda1 > > echo Mounting root filesystem. > > mount /sysroot > > echo Setting up other filesystems. > > setuproot > > echo Switching to new root and running init. > > switchroot > > > > Result: > > exec of init (/sbin/init) failed!!!: No such file or directory > > Kernel panic - not syncing: Attempted to kill init! > > > > Log: > > [root@hulk ~]# xm create -c mail > > Using config file "/etc/xen/mail". > > Going to boot Fedora Core 3 > > kernel: /boot/vmlinuz-2.6.18-1.2869.fc6xen > > initrd: /boot/initrd-2.6.18-1.2869.fc6xenU.img > > Started domain mail > > Linux version 2.6.18-1.2869.fc6xen > > (brewbuilder(a)ls20-bc2-14.build.redhat.com ) (gcc version > 4.1.1 20061011 > > (Red Hat 4.1.1-30)) #1 SMP Wed Dec 20 15:28:06 EST 2006 > > BIOS-provided physical RAM map: > > Xen: 0000000000000000 - 0000000010800000 (usable) > > 0MB HIGHMEM available. > > 264MB LOWMEM available. > > Using x86 segment limits to approximate NX protection > > ACPI in unprivileged domain disabled > > Built 1 zonelists. Total pages: 67584 > > Kernel command line: root=/dev/xvda1 > > Enabling fast FPU save and restore... done. > > Enabling unmasked SIMD FPU exception support... done. > > Initializing CPU#0 > > CPU 0 irqstacks, hard=c078b000 soft=c076b000 > > PID hash table entries: 2048 (order: 11, 8192 bytes) > > Xen reported: 1800.059 MHz processor. > > Console: colour dummy device 80x25 > > Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) > > Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) > > Software IO TLB disabled > > vmalloc area: d1000000-f4ffe000, maxmem 2d7fe000 > > Memory: 250940k/270336k available (2099k kernel code, 10876k reserved, > > 842k data, 180k init, 0k highmem) > > Checking if this processor honours the WP bit even in supervisor mode... > Ok. > > Calibrating delay using timer specific routine.. 4503.36 BogoMIPS > (lpj=9006734) > > Security Framework v1.0.0 initialized > > SELinux: Initializing. > > SELinux: Starting in permissive mode > > selinux_register_security: Registering secondary module > capability > > Capability LSM initialized as secondary > > Mount-cache hash table entries: 512 > > CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) > > CPU: L2 Cache: 256K (64 bytes/line) > > Checking 'hlt' instruction... OK. > > SMP alternatives: switching to UP code > > Freeing SMP alternatives: 12k freed > > Brought up 1 CPUs > > checking if image is initramfs... it is > > Freeing initrd memory: 3324k freed > > Grant table initialized > > NET: Registered protocol family 16 > > Brought up 1 CPUs > > PCI: setting up Xen PCI frontend stub > > ACPI: Interpreter disabled. > > Linux Plug and Play Support v0.97 (c) Adam Belay > > pnp: PnP ACPI: disabled > > xen_mem: Initialising balloon driver. > > usbcore: registered new driver usbfs > > usbcore: registered new driver hub > > PCI: System does not support PCI > > PCI: System does not support PCI > > NetLabel: Initializing > > NetLabel: domain hash size = 128 > > NetLabel: protocols = UNLABELED CIPSOv4 > > NetLabel: unlabeled traffic allowed by default > > NET: Registered protocol family 2 > > IP route cache hash table entries: 4096 (order: 2, 16384 bytes) > > TCP established hash table entries: 16384 (order: 6, 327680 bytes) > > TCP bind hash table entries: 8192 (order: 5, 163840 bytes) > > TCP: Hash tables configured (established 16384 bind 8192) > > TCP reno registered > > IA-32 Microcode Update Driver: v1.14-xen < tigran(a)veritas.com> > > audit: initializing netlink socket (disabled) > > audit(1169130101.084:1): initialized > > VFS: Disk quotas dquot_6.5.1 > > Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) > > SELinux: Registering netfilter hooks > > Initializing Cryptographic API > > ksign: Installing public key data > > Loading keyring > > - Added public key 1E0E64C0A8BD9F26 > > - User ID: Red Hat, Inc. (Kernel Module GPG key) > > io scheduler noop registered > > io scheduler anticipatory registered > > io scheduler deadline registered > > io scheduler cfq registered (default) > > pci_hotplug: PCI Hot Plug PCI Core version: 0.5 > > rtc: IRQ 8 is not free. > > Non-volatile memory driver v1.2 > > Linux agpgart interface v0.101 (c) Dave Jones > > RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize > > Xen virtual console successfully installed as xvc0 > > Linux version 2.6.18-1.2869.fc6xen > > ( brewbuilder(a)ls20-bc2-14.build.redhat.com) (gcc version > 4.1.1 20061011 > > (Red Hat 4.1.1-30)) #1 SMP Wed Dec 20 15:28:06 EST 2006 > > BIOS-provided physical RAM map: > > Xen: 0000000000000000 - 0000000010800000 (usable) > > 0MB HIGHMEM available. > > 264MB LOWMEM available. > > Using x86 segment limits to approximate NX protection > > ACPI in unprivileged domain disabled > > Built 1 zonelists. Total pages: 67584 > > Kernel command line: root=/dev/xvda1 > > Enabling fast FPU save and restore... done. > > Enabling unmasked SIMD FPU exception support... done. > > Initializing CPU#0 > > CPU 0 irqstacks, hard=c078b000 soft=c076b000 > > PID hash table entries: 2048 (order: 11, 8192 bytes) > > Xen reported: 1800.059 MHz processor. > > Console: colour dummy device 80x25 > > Dentry cache hash table entries: 65536 (order: 6, 262144 bytes) > > Inode-cache hash table entries: 32768 (order: 5, 131072 bytes) > > Software IO TLB disabled > > vmalloc area: d1000000-f4ffe000, maxmem 2d7fe000 > > Memory: 250940k/270336k available (2099k kernel code, 10876k reserved, > > 842k data, 180k init, 0k highmem) > > Checking if this processor honours the WP bit even in supervisor mode... > Ok. > > Calibrating delay using timer specific routine.. 4503.36 BogoMIPS > (lpj=9006734) > > Security Framework v1.0.0 initialized > > SELinux: Initializing. > > SELinux: Starting in permissive mode > > selinux_register_security: Registering secondary module > capability > > Capability LSM initialized as secondary > > Mount-cache hash table entries: 512 > > CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) > > CPU: L2 Cache: 256K (64 bytes/line) > > Checking 'hlt' instruction... OK. > > SMP alternatives: switching to UP code > > Freeing SMP alternatives: 12k freed > > Brought up 1 CPUs > > checking if image is initramfs... it is > > Freeing initrd memory: 3324k freed > > Grant table initialized > > NET: Registered protocol family 16 > > Brought up 1 CPUs > > PCI: setting up Xen PCI frontend stub > > ACPI: Interpreter disabled. > > Linux Plug and Play Support v0.97 (c) Adam Belay > > pnp: PnP ACPI: disabled > > xen_mem: Initialising balloon driver. > > usbcore: registered new driver usbfs > > usbcore: registered new driver hub > > PCI: System does not support PCI > > PCI: System does not support PCI > > NetLabel: Initializing > > NetLabel: domain hash size = 128 > > NetLabel: protocols = UNLABELED CIPSOv4 > > NetLabel: unlabeled traffic allowed by default > > NET: Registered protocol family 2 > > IP route cache hash table entries: 4096 (order: 2, 16384 bytes) > > TCP established hash table entries: 16384 (order: 6, 327680 bytes) > > TCP bind hash table entries: 8192 (order: 5, 163840 bytes) > > TCP: Hash tables configured (established 16384 bind 8192) > > TCP reno registered > > IA-32 Microcode Update Driver: v1.14-xen < tigran(a)veritas.com> > > audit: initializing netlink socket (disabled) > > audit(1169130101.084:1): initialized > > VFS: Disk quotas dquot_6.5.1 > > Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) > > SELinux: Registering netfilter hooks > > Initializing Cryptographic API > > ksign: Installing public key data > > Loading keyring > > - Added public key 1E0E64C0A8BD9F26 > > - User ID: Red Hat, Inc. (Kernel Module GPG key) > > io scheduler noop registered > > io scheduler anticipatory registered > > io scheduler deadline registered > > io scheduler cfq registered (default) > > pci_hotplug: PCI Hot Plug PCI Core version: 0.5 > > rtc: IRQ 8 is not free. > > Non-volatile memory driver v1.2 > > Linux agpgart interface v0.101 (c) Dave Jones > > RAMDISK driver initialized: 16 RAM disks of 16384K size 4096 blocksize > > Xen virtual console successfully installed as xvc0 > > Event-channel device installed. > > Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 > > ide: Assuming 50MHz system bus speed for PIO modes; override with > idebus=xx > > ide-floppy driver 0.99.newide > > usbcore: registered new driver libusual > > usbcore: registered new driver hiddev > > usbcore: registered new driver usbhid > > drivers/usb/input/hid-core.c: v2.6:USB HID core driver > > PNP: No PS/2 controller found. Probing ports directly. > > i8042.c: No controller found. > > mice: PS/2 mouse device common for all mice > > md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27 > > md: bitmap version 4.39 > > TCP bic registered > > Initializing IPsec netlink socket > > NET: Registered protocol family 1 > > NET: Registered protocol family 17 > > Using IPI No-Shortcut mode > > XENBUS: Device with no driver: device/vbd/51713 > > XENBUS: Device with no driver: device/vbd/51714 > > Freeing unused kernel memory: 180k freed > > Write protecting the kernel read-only data: 357k > > Red Hat nash version 5.1.19.0.2 starting > > Mounting proc filesystem > > Mounting sysfs filesystem > > Creating /dev > > Creating initial device nodes > > Setting up hotplug. > > Creating block device nodes. > > Loading xenblk.ko module > > Registering block device major 202 > > Loading uhci-hcd.ko module > > USB Universal Host Controller Interface driver v3.0 > > Loading ohci-hcd.ko module > > Loading ehci-hcd.ko module > > Loading jbd.ko module > > Loading ext3.ko module > > Loading scsi_mod.ko module > > SCSI subsystem initialized > > Loading sd_mod.ko module > > Loading 3w-xxxx.ko module > > 3ware Storage Controller device driver for Linux v1.26.02.001. > > Loading xennet.ko module > > netfront: Initialising virtual ethernet driver. > > Creating root device. > > Mounting root filesystem. > > EXT3-fs: INFO: recovery required on readonly filesystem. > > EXT3-fs: write access will be enabled during recovery. > > kjournald starting. Commit interval 5 seconds > > EXT3-fs: recovery complete. > > EXT3-fs: mounted filesystem with ordered data mode. > > Setting up other filesystems. > > Setting up new root fs > > no fstab.sys, mounting internal defaults > > Switching to new root and running init. > > unmounting old /dev > > unmounting old /proc > > unmounting old /sys > > exec of init (/sbin/init) failed!!!: No such file or directory > > Kernel panic - not syncing: Attempted to kill init! > > > > Other test reports will follow. > > > > Let me have your thoughts. > > > > Thanks in advance, > > Andrea Maurizio Gnerre > > > > On 1/18/07, AndreGround <andreground(a)gmail.com > wrote: > > > Andrew, Ninny, > > > thanks a lot for your reply! > > > > > > I'm collecting data (configurations and logs) from different tests > > > I've made and then I'll post everything in order to let you better > > > analyze my issue. > > > > > > Thanks again, > > > Andrea > > > > > > On 1/18/07, ninny issac <ninyissac(a)gmail.com> wrote: > > > > Hi, > > > > The error is probably due to incorrect root partition for your guest > domain. > > > > The kernel will start /sbin/init after mounting the root partion. > > > > Could you provide more details like what is the root partion for FC3 > domU , > > > > whether it is a partition or file and also your configuration file for > domU, > > > > so people can easily figure it out. > > > > > > > > > > > > > > > > > > > > On 1/17/07, AndreGround < andreground(a)gmail.com > wrote: > > > > > > > > > > Hi, > > > > > this is the error I get when I try to start my FC3 domU. > > > > > > > > > > exec of init (/sbin/init) failed!!!: No such file or directory > > > > > Kernel panic - not syncing: Attempted to kill init! > > > > > > > > > > I can share any config if you need to check something. > > > > > > > > > > Any help/idea is *REALLY* appreciated. > > > > > > > > > > Thanks in advance, > > > > > Andrea > > > > > > > > > > -- > > > > > Fedora-xen mailing list > > > > > Fedora-xen(a)redhat.com > > > > > https://www.redhat.com/mailman/listinfo/fedora-xen > > > > > > > > > > > > > > > > > > > > > > -- > Please avoid sending me Word or PowerPoint attachments. > See http://www.gnu.org/philosophy/no-word-attachments.html > > thanks... > niny...

17 years, 3 months

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FC6/Xen/CIFS mount broken

by master＠bradleyland.com

With further narrowing down, I've isolated my FC6/xen crashes to mounting a CIFS volume. A single mount is all that is required to cause the kernel oops. Please see fedora bugzilla # 214622. It looks as though the base kernel has been patched, but the xenified kernel has not. (?) If the xen kernels have been patched, then the problem still exists. Doesn't matter whether the Windows share is mounted rw or ro. Same behavior. No IO required. After the mount, the machine will crash within a minute or so, virtually every time so it should be easy to test. Can anyone tell me when the non-xen CIFS kernel patch will make it into the xen kernels? This bug has been driving me crazy. Thanks, Dave [root@firewall2 ~]# uname -a Linux firewall2.xxxxxxx.com 2.6.19-1.2895.fc6xen #1 SMP Wed Jan 10 19:47:12 EST 2007 i686 athlon i386 GNU/Linux

17 years, 3 months

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xen images gone from rawhide.

by Naoki

http://redhat.download.fedoraproject.org/pub/fedora/linux/core/developmen... doesn't exist. Is he coming back? Sorry I had a flick through devel-list archives but didn't see a matching subject and fedora-devel suggested asking the xen maintainer.. To be honest I don't know who that is.

17 years, 3 months

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FC6/Xen crash -- isolated to rsnapshot job

by master＠bradleyland.com

I've isolated my FC6/xen crashing problems to cron backup jobs that were running in my dom0. I have moved the jobs into a domU and now observe the crashing behavior in the domU. At least the entire environment doesn't come down when it's in a domU. In my crontab, I have a series of rsnapshot backup jobs to backup a handful of windows and linux servers. For windows machines, the script mounts a share on the windows machine using CIFS (samba). It seems only the Windows backup jobs crash the machine and then only crash when two are scheduled to start at exactly the same time. I can replicate the problem by running the crontab command from the command line. If I run the commands one at a time, no crash. If I start them both back to back, the crash occurs within 30 seconds or so. Under FC4, these scripts/backup jobs worked fine for almost a year without intervention. I've read there have been a host of problems with CIFS in FC6, but I thought they had been resolved. As a workaround, I can change the job schedule for now, but something is still broken in the kernel, samba or both. Here's a trace: list_del corruption. prev->next should be c2f5c640, but was c2f50080 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:65! invalid opcode: 0000 [#1] SMP last sysfs file: /block/ram0/range Modules linked in: nls_utf8 cifs ipv6 autofs4 hidp l2cap bluetooth iptable_raw xt_policy xt_multiport ipt_ULOG ipt_TTL ipt_ttl ipt_TOS ipt_tos ipt_TCPMSS ipt_SAME ipt_REJECT ipt_REDIRECT ipt_recent ipt_owner ipt_NETMAP ipt_MASQUERADE ipt_LOG ipt_iprange ipt_hashlimit ipt_ECN ipt_ecn ipt_CLUSTERIP ipt_ah ipt_addrtype ip_nat_tftp ip_nat_snmp_basic ip_nat_pptp ip_nat_irc ip_nat_ftp ip_nat_amanda ip_conntrack_tftp ip_conntrack_pptp ip_conntrack_netbios_ns ip_conntrack_irc ip_conntrack_ftp ts_kmp ip_conntrack_amanda xt_tcpmss xt_pkttype xt_physdev bridge xt_NFQUEUE xt_MARK xt_mark xt_mac xt_limit xt_length xt_helper xt_dccp xt_conntrack xt_CONNMARK xt_connmark xt_CLASSIFY xt_tcpudp xt_state iptable_nat ip_nat ip_conntrack iptable_mangle nfnetlink iptable_filter ip_tables x_tables tun sunrpc xennet parport_pc lp parport pcspkr dm_snapshot dm_zero dm_mirror dm_mod raid456 xor ext3 jbd xenblk CPU: 0 EIP: 0061:[<c04e9d0b>] Not tainted VLI EFLAGS: 00010082 (2.6.19-1.2895.fc6xen #1) EIP is at list_del+0x23/0x6c eax: 00000048 ebx: c2f5c640 ecx: c0683b30 edx: f5416000 esi: c117a7c0 edi: c32af000 ebp: c117eda0 esp: c0d2def0 ds: 007b es: 007b ss: 0069 Process events/0 (pid: 5, ti=c0d2d000 task=c006e030 task.ti=c0d2d000) Stack: c0646145 c2f5c640 c2f50080 c2f5c640 c0467706 c078afc0 c028c980 c0619b9d 00000014 00000002 c1176228 c1176220 00000014 c1176200 00000000 c0467809 00000000 00000000 c117eda0 c117a7e4 c117a7c0 c117eda0 c0d404a0 00000000 Call Trace: [<c0467706>] free_block+0x77/0xf0 [<c0467809>] drain_array+0x8a/0xb5 [<c0468e22>] cache_reap+0x85/0x117 [<c042d603>] run_workqueue+0x97/0xdd [<c042dfc0>] worker_thread+0xd9/0x10d [<c043058c>] kthread+0xc0/0xec [<c0405253>] kernel_thread_helper+0x7/0x10 ======================= Code: 00 00 89 c3 eb e8 90 90 53 89 c3 83 ec 0c 8b 40 04 8b 00 39 d8 74 1c 89 5c 24 04 89 44 24 08 c7 04 24 45 61 64 c0 e8 9a 4b f3 ff <0f> 0b 41 00 82 61 64 c0 8b 03 8b 40 04 39 d8 74 1c 89 5c 24 04 EIP: [<c04e9d0b>] list_del+0x23/0x6c SS:ESP 0069:c0d2def0 <3>BUG: sleeping function called from invalid context at kernel/rwsem.c:20 in_atomic():0, irqs_disabled():1 [<c04056ff>] dump_trace+0x69/0x1b6 [<c0405864>] show_trace_log_lvl+0x18/0x2c [<c0405e4b>] show_trace+0xf/0x11 [<c0405e7a>] dump_stack+0x15/0x17 [<c0433252>] down_read+0x12/0x28 [<c042aca2>] blocking_notifier_call_chain+0xe/0x29 [<c0420d75>] do_exit+0x1b/0x787 [<c0405dec>] die+0x2af/0x2d4 [<c0406262>] do_invalid_op+0xa2/0xab [<c0619deb>] error_code+0x2b/0x30 [<c04e9d0b>] list_del+0x23/0x6c [<c0467706>] free_block+0x77/0xf0 [<c0467809>] drain_array+0x8a/0xb5 [<c0468e22>] cache_reap+0x85/0x117 [<c042d603>] run_workqueue+0x97/0xdd [<c042dfc0>] worker_thread+0xd9/0x10d [<c043058c>] kthread+0xc0/0xec [<c0405253>] kernel_thread_helper+0x7/0x10 ======================= BUG: spinlock lockup on CPU#0, rsync/11148, c117a7e4 (Not tainted) [<c04056ff>] dump_trace+0x69/0x1b6 [<c0405864>] show_trace_log_lvl+0x18/0x2c [<c0405e4b>] show_trace+0xf/0x11 [<c0405e7a>] dump_stack+0x15/0x17 [<c04e9b6f>] _raw_spin_lock+0xbf/0xdc [<c0467a45>] cache_alloc_refill+0x74/0x4dc [<c04679b8>] kmem_cache_alloc+0x54/0x6d [<c0413ec1>] pgd_alloc+0x54/0x230 [<c041c020>] mm_init+0x94/0xb9 [<c047056d>] do_execve+0x6f/0x1f5 [<c0402e08>] sys_execve+0x2f/0x4f [<c0404efb>] syscall_call+0x7/0xb [<00b98402>] 0xb98402 =======================

17 years, 3 months

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[Fwd: Re: [Fedora-xen] xen images gone from rawhide.]

by Juan Quintela

[ Sending also to the mailing list]

17 years, 3 months

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xen January 2007