silly question, but I had a similar issue (cpu and ram) when my guest was
running an FSCK. Are you running an fsck or is it idle?
--
Jason
The place where you made your stand never mattered. Only that you were there..
And still on your feet.
On Wed, 20 Jul 2005, Ruaidhri Power wrote:
I've just upgraded UML, and came across this problem: when starting the
guest, output stops after "VFS: Mounted root (ext3 filesystem)
readonly." - at that point the guest takes 100% CPU, consuming both user
and system time.
The host is Debian sarge, running vanilla 2.6.12 with the
skas-2.6.12-v8.2 patch. The guest is vanilla 2.6.12 with Paolo's
2.6.12-bs7 patch, though I've verified the problem still occurs without
that patch. I can post the host and guest's .configs if needed.
The problem occurs on my own images which previously worked on older UML
versions, and I've also tried one of the images from the Sourceforge
site.
Has anyone any idea why this is happening? If not, how should I go
about debugging it to help the UML developers?
The complication is that this is a headless box. I've added `debug' to
the kernel command line, but I don't get an xterm with gdb in. Yes,
xterm and gdb are installed and I've run xlogo to test that X11
forwarding is working. Running gdb as `gdb linux' doesn't seem to work
because I keep receiving SIGTRAPs. I've heard debugging in skas mode is
hard, any pointers here?
Thanks in advance for any help you can give. Guest output follows:
[EMAIL PROTECTED]:~$ linux ubd1=swap eth0=tuntap,,,x.x.x.29 mem=768M
Checking for /proc/mm...found
Checking for the skas3 patch in the host...found
Checking PROT_EXEC mmap in /tmp...OK
Kernel virtual memory size shrunk to 32505856 bytes
Linux version 2.6.12-bs7 ([EMAIL PROTECTED]) (gcc version 3.3.5 (Debian
1:3.3.5-13)) #1 Wed Jul 20 12:32:41 IST 2005
Built 1 zonelists
Kernel command line: ubd1=swap eth0=tuntap,,,x.x.x.29 mem=768M root=98:0
PID hash table entries: 2048 (order: 11, 32768 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 467200k available
Mount-cache hash table entries: 512
Checking for host processor cmov support...Yes
Checking for host processor xmm support...No
Checking that ptrace can change system call numbers...OK
Checking syscall emulation patch for ptrace...OK
Checking advanced syscall emulation patch for ptrace...OK
Checking that host ptys support output SIGIO...Yes
Checking that host ptys support SIGIO on close...No, enabling workaround
Checking for /dev/anon on the host...Not available (open failed with errno 2)
NET: Registered protocol family 16
mconsole (version 2) initialized on /home/ruaidhri/.uml/2JjIYf/mconsole
Netdevice 0 : TUN/TAP backend - IP = x.x.x.29
highmem bounce pool size: 64 pages
devfs: 2004-01-31 Richard Gooch ([EMAIL PROTECTED])
devfs: boot_options: 0x0
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
loop: loaded (max 8 devices)
tun: Universal TUN/TAP device driver, 1.6
tun: (C) 1999-2004 Max Krasnyansky <[EMAIL PROTECTED]>
NET: Registered protocol family 2
IP: routing cache hash table of 8192 buckets, 64Kbytes
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 6, 262144 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
ip_tables: (C) 2000-2002 Netfilter core team
NET: Registered protocol family 1
NET: Registered protocol family 10
IPv6 over IPv4 tunneling driver
ip6_tables: (C) 2000-2002 Netfilter core team
NET: Registered protocol family 17
Initialized stdio console driver
Console initialized on /dev/tty0
Initializing software serial port version 1
/dev/ubd/disc0: unknown partition table
/dev/ubd/disc1: unknown partition table
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
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