The 03.02.21 at 00:37, Paul Uiterlinden wrote:

Look in /etc/modules.conf. There you'll find some aliases (at least, I hope so):

alias md-personality-1 linear alias md-personality-2 raid0 alias md-personality-3 raid1 alias md-personality-4 raid5 alias md-personality-7 multipath

So I would think that raid1 should be included in initrd.

Right! I have just done so, and will check what happens tomorrow on boot; I'll report again then. Thanks! -- Cheers, Carlos R.

On Saturday 22 February 2003 02:38, Carlos E. R. wrote:

The 03.02.21 at 02:14, Carlos E. R. wrote:

...

The 03.02.21 at 00:37, Paul Uiterlinden wrote:

...

So I would think that raid1 should be included in initrd.

Right! I have just done so, and will check what happens tomorrow on boot; I'll report again then. Thanks!

It doesn't work. I think that at that point initrd is not yet loaded, so that raid1 should have to be in the kernel itself, not as a module. Or disable the kernel trying to mount the raid automatically, I think I saw an option. Or just ignore it.

Strange. I have a RAID0 root partion (/dev/md0, ext3) and it works fine. In INITRD_MODULES I have: "aic7xxx jbd ext3 raid0 ide-scsi". My /boot partion is non-RAID (/dev/sda3, ext2). This is (or was?) needed for LILO. What does your RAID1 partition contain? Paul.

On Saturday 22 February 2003 22:46, Carlos E. R. wrote:

No, no, you misunderstood me: I can mount my raid, that is no problem :-)

The thing is that I'm curious why the kernel tries to mount it very early on the boot process, but it fails. A bit later, initrd is read, the root partition (reiserfs) is mounted, and then the raid is successfully mounted, maybe after reading /etc/fstab (this last detail I'm not sure).

But this means the system is trying twice; I was trying to optimize the process, and understand why it is happening.

That's why I asked what your RAID1 partition contains (boot, root?). My boot partition is non-RAID. I was guessing this would be the difference (it's just guessing). But now you mention that the system is trying twice: looking carefully to the output of dmesg, I see the same. Only thing is: the first time it succeeds, the second time it says "md: array md0 already exists!" (see below for complete output). My RAID stuff is all modularized (/usr/src/linux/.config): # # Multi-device support (RAID and LVM) # CONFIG_MD=y CONFIG_BLK_DEV_MD=y CONFIG_MD_LINEAR=m CONFIG_MD_RAID0=m # CONFIG_MD_RAID1 is not set # CONFIG_MD_RAID5 is not set # CONFIG_MD_MULTIPATH is not set CONFIG_BLK_DEV_LVM=m Hmmm, "all modularized"? Not quite: CONFIG_BLK_DEV_MD can be set to "m" as well. I wonder what happens if I do that. As soon as I've done that, I'll let you know. Paul. -------------------- Start of dmesg output -------------------- 0000009fc00 - 00000000000a0000 (reserved) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000001fff0000 (usable) BIOS-e820: 000000001fff0000 - 000000001fff3000 (ACPI NVS) BIOS-e820: 000000001fff3000 - 0000000020000000 (ACPI data) BIOS-e820: 00000000ffff0000 - 0000000100000000 (reserved) Scanning bios EBDA for MXT signature 511MB LOWMEM available. Advanced speculative caching feature not present On node 0 totalpages: 131056 zone(0): 4096 pages. zone(1): 126960 pages. zone(2): 0 pages. Building zonelist for node : 0 Kernel command line: auto BOOT_IMAGE=linux ro root=900 hdd=ide-scsi ide_setup: hdd=ide-scsi Initializing CPU#0 Detected 350.801 MHz processor. Console: colour VGA+ 132x25 Calibrating delay loop... 699.59 BogoMIPS Memory: 515240k/524224k available (1214k kernel code, 8596k reserved, 452k data, 144k init, 0k highmem) Dentry cache hash table entries: 65536 (order: 7, 524288 bytes) Inode cache hash table entries: 32768 (order: 6, 262144 bytes) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes) Page-cache hash table entries: 131072 (order: 7, 524288 bytes) CPU: Before vendor init, caps: 0183f9ff 00000000 00000000, vendor = 0 CPU: L1 I cache: 16K, L1 D cache: 16K CPU: L2 cache: 512K CPU: After vendor init, caps: 0183f9ff 00000000 00000000 00000000 Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU: After generic, caps: 0183f9ff 00000000 00000000 00000000 CPU: Common caps: 0183f9ff 00000000 00000000 00000000 CPU: Intel Pentium II (Deschutes) stepping 02 Enabling fast FPU save and restore... done. Checking 'hlt' instruction... OK. POSIX conformance testing by UNIFIX mtrr: v1.40 (20010327) Richard Gooch (rgooch@atnf.csiro.au) mtrr: detected mtrr type: Intel PCI: PCI BIOS revision 2.10 entry at 0xfb2f0, last bus=1 PCI: Using configuration type 1 PCI: Probing PCI hardware PCI: Probing PCI hardware (bus 00) PCI: Using IRQ router PIIX [8086/7110] at 00:02.0 Limiting direct PCI/PCI transfers. Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket apm: BIOS version 1.2 Flags 0x07 (Driver version 1.16) mxt_scan_bios: enter Starting kswapd bigpage subsystem: allocated 0 bigpages (=0MB). kinoded started aio_setup: num_physpages = 32764 aio_setup: sizeof(struct page) = 44 pty: 256 Unix98 ptys configured Real Time Clock Driver v1.10e Uniform Multi-Platform E-IDE driver Revision: 6.31 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx PIIX4: IDE controller on PCI bus 00 dev 11 PIIX4: chipset revision 1 PIIX4: not 100% native mode: will probe irqs later ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA hda: CD-ROM CDU771, ATAPI CD/DVD-ROM drive hdd: LITE-ON LTR-48246S, ATAPI CD/DVD-ROM drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15 Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 RAMDISK driver initialized: 16 RAM disks of 64000K size 1024 blocksize loop: loaded (max 16 devices) SCSI subsystem driver Revision: 1.00 kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2 md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP IP: routing cache hash table of 4096 buckets, 32Kbytes TCP: Hash tables configured (established 32768 bind 65536) NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. RAMDISK: Compressed image found at block 0 Freeing initrd memory: 259k freed VFS: Mounted root (ext2 filesystem). PCI: Found IRQ 9 for device 00:0c.0 PCI: Sharing IRQ 9 with 00:0f.0 scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.8 <Adaptec aic7880 Ultra SCSI adapter> aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs Vendor: SEAGATE Model: ST34520W Rev: 1444 Type: Direct-Access ANSI SCSI revision: 02 Vendor: SEAGATE Model: ST34520W Rev: 1444 Type: Direct-Access ANSI SCSI revision: 02 Vendor: HP Model: HP35470A Rev: T503 Type: Sequential-Access ANSI SCSI revision: 02 Vendor: DEC Model: RZ29B (C) DEC Rev: 0016 Type: Direct-Access ANSI SCSI revision: 02 Vendor: DEC Model: RZ29B (C) DEC Rev: 0016 Type: Direct-Access ANSI SCSI revision: 02 scsi0:A:0:0: Tagged Queuing enabled. Depth 32 scsi0:A:1:0: Tagged Queuing enabled. Depth 32 scsi0:A:8:0: Tagged Queuing enabled. Depth 32 scsi0:A:9:0: Tagged Queuing enabled. Depth 32 sd_init() sd: allocated major 8 sd_attach() sd: find_free_slot ...<7>sd: ... found 08:00 Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 sd_attach() sd: find_free_slot ...<7>sd: ... found 08:10 Attached scsi disk sdb at scsi0, channel 0, id 1, lun 0 sd_attach() sd_attach() sd: find_free_slot ...<7>sd: ... found 08:20 Attached scsi disk sdc at scsi0, channel 0, id 8, lun 0 sd_attach() sd: find_free_slot ...<7>sd: ... found 08:30 Attached scsi disk sdd at scsi0, channel 0, id 9, lun 0 sd_finish() sd_init_onedisk (0,0), sda 08:00 (scsi0:A:0): 40.000MB/s transfers (20.000MHz, offset 8, 16bit) SCSI device sda: 8888924 512-byte hdwr sectors (4551 MB) Partition check: sda: sda1 sda2 sda3 sda4 sd_init_onedisk (0,1), sdb 08:10 (scsi0:A:1): 40.000MB/s transfers (20.000MHz, offset 8, 16bit) SCSI device sdb: 8888924 512-byte hdwr sectors (4551 MB) sdb: sdb1 sdb2 sdb3 sd_init_onedisk (0,2), sdc 08:20 (scsi0:A:8): 20.000MB/s transfers (10.000MHz, offset 8, 16bit) SCSI device sdc: 8380080 512-byte hdwr sectors (4291 MB) sdc: sdc1 sdc2 sd_init_onedisk (0,3), sdd 08:30 (scsi0:A:9): 20.000MB/s transfers (10.000MHz, offset 8, 16bit) SCSI device sdd: 8380080 512-byte hdwr sectors (4291 MB) sdd: sdd1 sdd2 Journalled Block Device driver loaded md: raid0 personality registered as nr 2 hda: no flushcache support hdd: no flushcache support scsi1 : SCSI host adapter emulation for IDE ATAPI devices Vendor: SONY Model: CD-ROM CDU771 Rev: 1.0m Type: CD-ROM ANSI SCSI revision: 02 Vendor: LITE-ON Model: LTR-48246S Rev: SS09 Type: CD-ROM ANSI SCSI revision: 02 sd_init() sd_attach() sd_attach() sd_finish() md: Autodetecting RAID arrays. [events: 000001a1] [events: 000001a1] [events: 000001a1] [events: 000001a1] md: autorun ... md: considering sdd2 ... md: adding sdd2 ... md: adding sdc2 ... md: adding sdb2 ... md: adding sda2 ... md: created md0 md: bind md: bind md: bind md: bind md: running: <sdd2><sdc2><sdb2><sda2> md: sdd2's event counter: 000001a1 md: sdc2's event counter: 000001a1 md: sdb2's event counter: 000001a1 md: sda2's event counter: 000001a1 md0: max total readahead window set to 992k md0: 4 data-disks, max readahead per data-disk: 248k raid0: looking at sda2 raid0: comparing sda2(3775168) with sda2(3775168) raid0: END raid0: ==> UNIQUE raid0: 1 zones raid0: looking at sdb2 raid0: comparing sdb2(2747008) with sda2(3775168) raid0: NOT EQUAL raid0: comparing sdb2(2747008) with sdb2(2747008) raid0: END raid0: ==> UNIQUE raid0: 2 zones raid0: looking at sdc2 raid0: comparing sdc2(4056320) with sda2(3775168) raid0: NOT EQUAL raid0: comparing sdc2(4056320) with sdb2(2747008) raid0: NOT EQUAL raid0: comparing sdc2(4056320) with sdc2(4056320) raid0: END raid0: ==> UNIQUE raid0: 3 zones raid0: looking at sdd2 raid0: comparing sdd2(4056320) with sda2(3775168) raid0: NOT EQUAL raid0: comparing sdd2(4056320) with sdb2(2747008) raid0: NOT EQUAL raid0: comparing sdd2(4056320) with sdc2(4056320) raid0: EQUAL raid0: FINAL 3 zones raid0: zone 0 raid0: checking sda2 ... contained as device 0 (3775168) is smallest!. raid0: checking sdb2 ... contained as device 1 (2747008) is smallest!. raid0: checking sdc2 ... contained as device 2 raid0: checking sdd2 ... contained as device 3 raid0: zone->nb_dev: 4, size: 10988032 raid0: current zone offset: 2747008 raid0: zone 1 raid0: checking sda2 ... contained as device 0 (3775168) is smallest!. raid0: checking sdb2 ... nope. raid0: checking sdc2 ... contained as device 1 raid0: checking sdd2 ... contained as device 2 raid0: zone->nb_dev: 3, size: 3084480 raid0: current zone offset: 3775168 raid0: zone 2 raid0: checking sda2 ... nope. raid0: checking sdb2 ... nope. raid0: checking sdc2 ... contained as device 0 (4056320) is smallest!. raid0: checking sdd2 ... contained as device 1 raid0: zone->nb_dev: 2, size: 562304 raid0: current zone offset: 4056320 raid0: done. raid0 : md_size is 14634816 blocks. raid0 : conf->smallest->size is 562304 blocks. raid0 : nb_zone is 27. raid0 : Allocating 216 bytes for hash. md: updating md0 RAID superblock on device md: sdd2 [events: 000001a2]<6>(write) sdd2's sb offset: 4056320 md: sdc2 [events: 000001a2]<6>(write) sdc2's sb offset: 4056320 md: sdb2 [events: 000001a2]<6>(write) sdb2's sb offset: 2747008 md: sda2 [events: 000001a2]<6>(write) sda2's sb offset: 3775168 md: ... autorun DONE. kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. VFS: Mounted root (ext3 filesystem) readonly. Trying to move old root to /initrd ... failed Unmounting old root Trying to free ramdisk memory ... okay Freeing unused kernel memory: 144k freed isapnp: Scanning for PnP cards... isapnp: Card 'Plug & Play Ethernet Card' isapnp: 1 Plug & Play card detected total Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI ISAPNP enabled ttyS00 at 0x03f8 (irq = 4) is a 16550A ttyS01 at 0x02f8 (irq = 3) is a 16550A md: array md0 already exists! md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. EXT3 FS 2.4-0.9.18, 14 May 2002 on md(9,0), internal journal LVM version 1.0.5(mp-v6)(15/07/2002) module loaded Adding Swap: 128480k swap-space (priority 1) Adding Swap: 128480k swap-space (priority 1) Adding Swap: 128480k swap-space (priority 1) Adding Swap: 128480k swap-space (priority 1) EXT3 FS 2.4-0.9.18, 14 May 2002 on md(9,0), internal journal etc. etc.

The 03.02.24 at 13:38, Paul Uiterlinden wrote:

It's been an interesting excercize, though not very fruitfull.

:-) My mother tells an anecdote of Edison. He had to test hundred of materials for the filament of the electric bulb lamp he was inventing, but all of them burnt too soon. Someone told him he had failed, and he replied that no, he had learnt that those hundreds of materials were no good for the task. I read somewhere the one that finally worked was made from carbonized sugar cane fibers! -- Cheers, Carlos Robinson

The 03.02.24 at 13:38, Paul Uiterlinden wrote:

On Monday 24 February 2003 11:23, Paul Uiterlinden wrote:

...

Hmmm, "all modularized"? Not quite: CONFIG_BLK_DEV_MD can be set to "m" as well. I wonder what happens if I do that. As soon as I've done that, I'll let you know.

Setting CONFIG_BLK_DEV_MD to m creates a module not suprisingly called md.o. Without adding this to initrd, module raid0 cannot be loaded (undefined symbols), and the root partition cannot be mounted. So far, clear.

Ah! I bumped into that the other day, without knowing. I updated the patch for the kernel sources, but not for the kernel binary, in order to save transmission time (and money), as I use a V90 modem. So I set up to compile the kernel, and I got the error you mention above. I couldn't see what I had done wrong, so I had to download the patch for binary as well (k_deflt). After that, i made a make cloneconfig and compiled without problems. -- Cheers, Carlos Robinson

On Monday 24 February 2003 15:11, Carlos E. R. wrote:

Ahh. No, my root partition is plain reiser, and /boot is ext2, both non raid, on /dev/hdb. I only have an extra 3 Gb partition as raid, to experiment with :-)

OK, I see. It only adds to the mystery. Why does it still fail? You suggested in an earlier mail it might be because initrd is not yet loaded at that point. But I think that's not possible. I mean: the whole idea of initrd is that you can insert modules even before the root partition is mounted.

...

But now you mention that the system is trying twice: looking carefully to the output of dmesg, I see the same. Only thing is: the first time it succeeds, the second time it says "md: array md0 already exists!" (see below for complete output).

Interesting...

Ah, but yours are scsi disks, it seems. Maybe there is a difference there :-?

Yes, they are indeed SCSI disks. I would not expect any difference on that account. But then again: who am I? Paul.

Some time ago, on 03.02.25 we were talking about a strange sequence of events when mounting a software raid:

...

On Monday 24 February 2003 15:11, Carlos E. R. wrote: [...] The sequence is this: the kernel loads, initialises a lot of things, like IDE, checks the partitions, sees some of them are raid, and tries to load

The 03.02.24 at 21:44, Paul Uiterlinden wrote: them: [but fails the first time] [ ...] Now the root filesystem has been really mounted, and the raid is again considered:

<6>Freeing unused kernel memory: 168k freed <6>md: Autodetecting RAID arrays. <6> [events: 00000344] <6> [events: 00000344] <6>md: autorun ... <6>md: considering hda11 ... <6>md: adding hda11 ... <6>md: adding hdb14 ... <6>md: created md0 <6>md: bind <6>md: bind <6>md: running: <hda11><hdb14> <6>md: hda11's event counter: 00000344 <6>md: hdb14's event counter: 00000344 <6>md: RAID level 1 does not need chunksize! Continuing anyway. <6>md: raid1 personality registered as nr 3 <6>md0: max total readahead window set to 508k <6>md0: 1 data-disks, max readahead per data-disk: 508k <6>raid1: device hda11 operational as mirror 0 <6>raid1: device hdb14 operational as mirror 1 <6>raid1: raid set md0 active with 2 out of 2 mirrors <6>md: updating md0 RAID superblock on device <6>md: hda11 [events: 00000345]<6>(write) hda11's sb offset: 3124544 <6>md: hdb14 [events: 00000345]<6>(write) hdb14's sb offset: 3124544 <6> [events: 0f227faa] <3>md: invalid raid superblock magic on md0 <4>md: md0 has invalid sb, not importing! <4>md: no nested md device found <6>md: ... autorun DONE.

Now I'm noticing that it says "invalid raid superblock magic on md0". I

Well, that's a extract of what we were saying then. I have discovered some new info. I was watching the console 10 when halting the system, and noticed a message about md being stoped, and something that failed - unfortunately, the system powers off at that precise moment, and I can not read it. I have edited "/etc/init.d/halt" right at the end. First, I added a "sleep 20": echo "----------- real halt comming in 20\" ----------" sleep 20 echo "----------- real halt now ----------------------" # Now talk to kernel exec $command -d -f I do see those lines on the output, and I read a message about md being stopped. But that's all! The error message I see goes after that "exec $command -d -f" (probably halt -p -d -f), so I still can not read it. It's probably doing a "halt -p -d -f": -f Force halt or reboot, don't call shutdown(8). -d Don't write the wtmp record. The -n flag implies -d. -p When halting the system, do a poweroff. This is the default when halt is called as poweroff. So, I remove the "-p" (not shown), and this is what I see on console number 10, copied by hand: analog.c [...] gameport md: recovery thread got woken up ... md: recovery thread finished ... ---> kernel halt is called here md: stopping al md devices md: marking sb clean md: updating md0 RAID superblock on device md: hda11 [events: 000004c2]<6>(write) hda11's sb offset: 3124544 md: hdb14 [events: 000004c2]<6>(write) hdb14's sb offset: 3124544 md: md0 switched to read_only mode flushing ide devices: hda hdb hdc hdd System halted My guess is that the software raid is trying to do something as a result of the halt command, but can not finish writing it to disk. Thus, on the next wakeup, there are always errors: <6>md: created md0 <6>md: bind <6>md: bind <6>md: running: <hda11><hdb14> <6>md: hda11's event counter: 000004c2 <6>md: hdb14's event counter: 000004c2 <6>md: RAID level 1 does not need chunksize! Continuing anyway. <6>md: raid1 personality registered as nr 3 <6>md0: max total readahead window set to 508k <6>md0: 1 data-disks, max readahead per data-disk: 508k <6>raid1: device hda11 operational as mirror 0 <6>raid1: device hdb14 operational as mirror 1 <6>raid1: raid set md0 active with 2 out of 2 mirrors <6>md: updating md0 RAID superblock on device <6>md: hda11 [events: 000004c3]<6>(write) hda11's sb offset: 3124544 <6>md: hdb14 [events: 000004c3]<6>(write) hdb14's sb offset: 3124544 <6> [events: d20feae5] <3>md: invalid raid superblock magic on md0 <4>md: md0 has invalid sb, not importing! <4>md: no nested md device found <6>md: ... autorun DONE. Interesting... I could be wrong, because you see that the event log is indeed incremented after boot (or perhaps it is so because this time I had disabled the power off), so something got written (and the offset is exactly the same every time). But a few more people have reported that "invalid raid superblock" and events messages, so something weird is still happening. -- Cheers, Carlos Robinson

I've been trying to install free swan and in so doing killed my machine. I installed 2.4.19 kernel. With the appropriate patchs. For some reason when I boot. Even with the failsafe kernel my interfaces fail to load. I can do a modprob eth1 and eth2 and it loads. Then I can also do an ifconfig eth1 up 192.168.1.1 and it loads. I tried using yast to remove and re-add the interfaces with no luck. Any ideas where to check next. ?