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    SubjectRe: [ANNOUNCE][CFT] kexec for v2.5.48 && kexec-tools-1.7 -- Success Story!
    On Mon, Nov 18, 2002 at 05:10:38PM -0800, Andy Pfiffer wrote:
    > On Mon, 2002-11-18 at 00:53, Eric W. Biederman wrote:
    > > kexec is a set of systems call that allows you to load another kernel
    > > from the currently executing Linux kernel. The current implementation
    > > has only been tested, and had the kinks worked out on x86, but the
    > > generic code should work on any architecture.
    >
    > Great News, Eric. For the first time *ever* I got a kexec reboot to
    > work on my most troublesome machine (see below).

    Same here - preloading the new kernel and issuing kexec -e after
    init 1 works on the troublesome SMP system I'd earlier been sending
    you earlier. Bootimg used to work on this setup, so bypassing the
    bios calls had the expected effect.

    If I issue the call earlier though, it runs into trouble with aic7xxx
    reporting interrupts during setup. Guess you know why we are looking
    at that case - eventually need to be able to transition directly at dump
    time without a chance to go through user-space shutdown ...

    Regards
    Suparna

    >
    > For those looking to replicate:
    >
    >
    > 0. apply these two patches to 2.5.48 (bk Changeset 1.842)
    > http://www.xmission.com/~ebiederm/files/kexec/linux-2.5.48.x86kexec.diff
    > http://www.xmission.com/~ebiederm/files/kexec/linux-2.5.48.x86kexec-hwfixes.diff
    >
    > 2. compile this:
    > http://www.xmission.com/~ebiederm/files/kexec/kexec-tools-1.7.tar.gz
    >
    > 3. my recipe for rebooting:
    > a) I have a script that I execute by hand after "init 1" to unmount
    > my filesystems and then remount / and /boot read-only.
    > b) I have the kexec binary installed in /boot.
    > c) ./kexec-1.7 --force --debug "--command-line=ro root=805
    > console=ttyS0,9600n8" ./linux-2.5
    >
    > Thanks, Eric!
    >
    > Andy
    >

    > # ./kexec-1.7 --force --debug "--command-line=ro root=805 console=ttyS0,9600n8" ./linux-2.5
    > FIXME assuming 64M of ram
    > setup16_end: 00091b1f
    > FIXME assuming 64M of ram
    > Synchronizing SCSI caches:
    > Shutting down devices
    > Starting new kernel
    > Linux version 2.5.48 (andyp@joe) (gcc version 2.95.3 20010315 (SuSE)) #1 Mon Nov 18 15:03:14 PST 2002
    > Video mode to be used for restore is ffff
    > BIOS-provided physical RAM map:
    > BIOS-e820: 0000000000001000 - 000000000009ffff (usable)
    > BIOS-e820: 0000000000100000 - 0000000003ffffff (usable)
    > 63MB LOWMEM available.
    > hm, page 00000000 reserved twice.
    > On node 0 totalpages: 16383
    > DMA zone: 4096 pages, LIFO batch:1
    > Normal zone: 12287 pages, LIFO batch:2
    > HighMem zone: 0 pages, LIFO batch:1
    > IBM machine detected. Enabling interrupts during APM calls.
    > IBM machine detected. Disabling SMBus accesses.
    > Building zonelist for node : 0
    > Kernel command line: ro root=805 console=ttyS0,9600n8
    > Initializing CPU#0
    > Detected 799.717 MHz processor.
    > Console: colour VGA+ 80x25
    > Calibrating delay loop... 1581.05 BogoMIPS
    > Memory: 60868k/65532k available (2087k kernel code, 4204k reserved, 825k data, 304k init, 0k highmem)
    > Security Scaffold v1.0.0 initialized
    > Dentry cache hash table entries: 8192 (order: 4, 65536 bytes)
    > Inode-cache hash table entries: 4096 (order: 3, 32768 bytes)
    > Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
    > -> /dev
    > -> /dev/console
    > -> /root
    > CPU: L1 I cache: 16K, L1 D cache: 16K
    > CPU: L2 cache: 256K
    > Intel machine check architecture supported.
    > Intel machine check reporting enabled on CPU#0.
    > CPU: Intel Pentium III (Coppermine) stepping 0a
    > Enabling fast FPU save and restore... done.
    > Enabling unmasked SIMD FPU exception support... done.
    > Checking 'hlt' instruction... OK.
    > POSIX conformance testing by UNIFIX
    > Linux NET4.0 for Linux 2.4
    > Based upon Swansea University Computer Society NET3.039
    > Initializing RT netlink socket
    > mtrr: v2.0 (20020519)
    > Linux Plug and Play Support v0.9 (c) Adam Belay
    > PCI: PCI BIOS revision 2.10 entry at 0xfd5dc, last bus=1
    > PCI: Using configuration type 1
    > BIO: pool of 256 setup, 14Kb (56 bytes/bio)
    > biovec pool[0]: 1 bvecs: 116 entries (12 bytes)
    > biovec pool[1]: 4 bvecs: 116 entries (48 bytes)
    > biovec pool[2]: 16 bvecs: 58 entries (192 bytes)
    > biovec pool[3]: 64 bvecs: 29 entries (768 bytes)
    > biovec pool[4]: 128 bvecs: 14 entries (1536 bytes)
    > biovec pool[5]: 256 bvecs: 7 entries (3072 bytes)
    > block request queues:
    > 112 requests per read queue
    > 112 requests per write queue
    > 8 requests per batch
    > enter congestion at 27
    > exit congestion at 29
    > isapnp: Scanning for PnP cards...
    > isapnp: No Plug & Play device found
    > drivers/usb/core/usb.c: registered new driver usbfs
    > drivers/usb/core/usb.c: registered new driver hub
    > PCI: Probing PCI hardware
    > PCI: Probing PCI hardware (bus 00)
    > PCI: Discovered peer bus 01
    > Starting kswapd
    > aio_setup: sizeof(struct page) = 40
    > [c3fb2040] eventpoll: successfully initialized.
    > Journalled Block Device driver loaded
    > Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
    > udf: registering filesystem
    > Capability LSM initialized
    > Serial: 8250/16550 driver $Revision: 1.90 $ IRQ sharing disabled
    > ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
    > ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
    > parport0: PC-style at 0x378 [PCSPP]
    > pty: 256 Unix98 ptys configured
    > lp0: using parport0 (polling).
    > Linux agpgart interface v0.99 (c) Jeff Hartmann
    > agpgart: Maximum main memory to use for agp memory: 27M
    > agpgart: unable to determine aperture size.
    > agpgart: Maximum main memory to use for agp memory: 27M
    > agpgart: unable to determine aperture size.
    > [drm] Initialized radeon 1.7.0 20020828 on minor 0
    > Floppy drive(s): fd0 is 1.44M
    > FDC 0 is a National Semiconductor PC87306
    > Intel(R) PRO/100 Network Driver - version 2.1.24-k2
    > Copyright (c) 2002 Intel Corporation
    >
    > e100: eth0: Intel(R) PRO/100+ Server Adapter (PILA8470B)
    > Mem:0xfeb7f000 IRQ:11 Speed:0 Mbps Dx:N/A
    > Hardware receive checksums enabled
    > cpu cycle saver enabled
    >
    > Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
    > ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
    > hda: LG CD-ROM CRD-8484B, ATAPI CD/DVD-ROM drive
    > ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
    > hda: ATAPI 48X CD-ROM drive, 128kB Cache
    > Uniform CD-ROM driver Revision: 3.12
    > end_request: I/O error, dev hda, sector 0
    > SCSI subsystem driver Revision: 1.00
    > PCI: Enabling device 01:03.0 (0156 -> 0157)
    > scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.4
    > <Adaptec aic7892 Ultra160 SCSI adapter>
    > aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
    >
    > (scsi0:A:0): 160.000MB/s transfers (80.000MHz DT, offset 31, 16bit)
    > Vendor: IBM-PSG Model: ST318436LC !# Rev: 3281
    > Type: Direct-Access ANSI SCSI revision: 03
    > (scsi0:A:1): 160.000MB/s transfers (80.000MHz DT, offset 31, 16bit)
    > Vendor: IBM-PSG Model: ST318436LC !# Rev: 3281
    > Type: Direct-Access ANSI SCSI revision: 03
    > Vendor: IBM Model: YGLv3 S2 Rev: 0
    > Type: Processor ANSI SCSI revision: 02
    > scsi0:A:0:0: Tagged Queuing enabled. Depth 64
    > SCSI device sda: drive cache: write through
    > SCSI device sda: 35548320 512-byte hdwr sectors (18201 MB)
    > sda: sda1 sda2 < sda5 sda6 sda7 sda8 sda9 sda10 >
    > Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
    > scsi0:A:1:0: Tagged Queuing enabled. Depth 64
    > SCSI device sdb: drive cache: write through
    > SCSI device sdb: 35548320 512-byte hdwr sectors (18201 MB)
    > sdb: sdb1
    > Attached scsi disk sdb at scsi0, channel 0, id 1, lun 0
    > Attached scsi generic sg2 at scsi0, channel 0, id 8, lun 0, type 3
    > Initializing USB Mass Storage driver...
    > drivers/usb/core/usb.c: registered new driver usb-storage
    > USB Mass Storage support registered.
    > mice: PS/2 mouse device common for all mice
    > input: ImPS/2 Generic Wheel Mouse on isa0060/serio1
    > serio: i8042 AUX port at 0x60,0x64 irq 12
    > input: AT Set 2 keyboard on isa0060/serio0
    > serio: i8042 KBD port at 0x60,0x64 irq 1
    > Advanced Linux Sound Architecture Driver Version 0.9.0rc5 (Sun Nov 10 19:48:18 2002 UTC).
    > request_module[snd-card-0]: not ready
    > request_module[snd-card-1]: not ready
    > request_module[snd-card-2]: not ready
    > request_module[snd-card-3]: not ready
    > request_module[snd-card-4]: not ready
    > request_module[snd-card-5]: not ready
    > request_module[snd-card-6]: not ready
    > request_module[snd-card-7]: not ready
    > ALSA device list:
    > No soundcards found.
    > NET4: Linux TCP/IP 1.0 for NET4.0
    > IP: routing cache hash table of 512 buckets, 4Kbytes
    > TCP: Hash tables configured (established 4096 bind 4096)
    > NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
    > kjournald starting. Commit interval 5 seconds
    > EXT3-fs: mounted filesystem with ordered data mode.
    > VFS: Mounted root (ext3 filesystem) readonly.
    > Freeing unused kernel memory: 304k freed
    > INIT: version 2.82 booting
    > Running /etc/init.d/boot
    > Mounting /proc device done
    > Mounting /dev/ptsblogd: console=/dev/console, stdin=/dev/console, must differ, boot logging disabled
    > showconsole: Warning: the ioctl TIOCGDEV is not known by the kerAdding 530104k swap on /dev/sda6. Priority:42 extents:1
    > nel
    > Activating swap-devices in /etc/fstab... done
    > showconsole: Warning: the ioctl TIOCGDEV is not known by the kernel
    > Checking file systems...
    > fsck 1.26 (3-Feb-2002)
    > /dev/sda5: clean, 16935/66264 files, 104836/265041 blocks
    > /dev/sda1: clean, 55/10040 files, 24115/40131 blocks
    > /dev/sdb1: clean, 11/2223872 files, 78008/4441964 blocks
    > /dev/sda10: clean, 523256/1198208 files, 2052639/2393677 blocks
    > /dev/sda9: clean, 51895/263296 files, 310582/526120 blocks
    > /dev/sda8: clean, 140195/525888 files, 590977/1050241 blocks
    > /dev/sda7: clean, EXT3 FS 2.4-0.9.16, 02 Dec 2001 on sd(8,5), 2747/131616 fileinternal journal
    > s, 111363/263056 blocks done
    > Setting up /lib/modules/2.5.48 failed
    > Mounting local file systems...
    > kjournald starting. Commit interval 5 seconds
    > proc on /proc tyEXT3 FS 2.4-0.9.16, 02 Dec 2001 on sd(8,17), pe proc (rw)
    > deinternal journal
    > vpts on /dev/ptsEXT3-fs: mounted filesystem with ordered data mode.
    > type devpts (rw,mode=0620,gid=5)
    > /dev/sdb1 on /2nd type ext3 (kjournald starting. Commit interval 5 seconds
    > rw)
    > /dev/sda1 oEXT3 FS 2.4-0.9.16, 02 Dec 2001 on sd(8,10), n /boot type extinternal journal
    > 2 (rw)
    > EXT3-fs: mounted filesystem with ordered data mode.
    > /dev/sda10 on /home type ext3 (rw)
    > kjournald starting. Commit interval 5 seconds
    > EXT3 FS 2.4-0.9.16, 02 Dec 2001 on sd(8,9), internal journal
    > EXT3-fs: mounted filesystem with ordered data mode.
    > /dev/sda9 on /opt type ext3 (rw)
    > kjournald starting. Commit interval 5 seconds
    > EXT3 FS 2.4-0.9.16, 02 Dec 2001 on sd(8,8), internal journal
    > EXT3-fs: mounted filesystem with ordered data mode.
    > /dev/sda8 on /usr type ext3 (rw)
    > kjournald starting. Commit interval 5 seconds
    > EXT3 FS 2.4-0.9.16, 02 Dec 2001 on sd(8,7), internal journal
    > EXT3-fs: mounted filesystem with ordered data mode.
    > /dev/sda7 on /var type ext3 (rw) done
    > Restore device permissions done
    > Activating remaining swap-devices in /etc/fstab... done
    > Setting up the CMOS clock done
    > Setting up timezone data done
    > Configuring serial ports...
    > ttyS0 at 0x03f8 (irq = 4) is a 16550A
    > ttyS1 at 0x02f8 (irq = 3) is a 16550A
    > Configured serial ports done
    > Setting up hostname 'joe' done
    > Setting up loopback interface done
    > Creating /var/log/boot.msg done
    > showconsole: Warning: the ioctl TIOCGDEV is not known by the kernel
    > INIT: Entering runlevel: 5
    > blogd: console=/dev/console, stdin=/dev/console, must differ, boot logging disabled
    > Master Resource Control: previous runlevel: N, switching to runlevel:5
    > Starting personal-firewall (initial) [not active] unused
    > Initializing random number generator done
    > Setting up network interfaces:
    > lo done
    > eth0 (DHCP) IP address: 172.20.1.38 done
    > Starting syslog services done
    > Starting hotplugging services [ net pci usb ] failed
    > Starting hardware scan on boote100: eth0 NIC Link is Up 100 Mbps Full duplex
    > done
    > Starting RPC portmap daemon done
    > Starting SSH daemon done
    > Starting sound driver: already running done
    > Starting service at daemon done
    > Initializing SMTP port (sendmail) done
    > Loading keymap qwerty/us.map.gz done
    > Loading compose table winkeys shiftctrl latin1.add done
    > Loading console font lat1-16.psfu done
    > Loading screenmap none done
    > Setting up console ttys done
    > Starting service kdm done
    > Starting CRON daemon done
    > Starting Name Service Cache Daemon done
    > Starting inetd done
    > Starting personal-firewall (final) [not active] unused
    > Master Resource Control: runlevel 5 has been reached
    > Failed services in runlevel 5: hotplug
    > Skipped services in runlevel 5: personal-firewall.initial splash personal-firewall.final
    >


    --
    Suparna Bhattacharya (suparna@in.ibm.com)
    Linux Technology Center
    IBM Software Labs, India

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