Re: [Lug-bg] RAID и debian

[Marian Marinov <mm@xxxxxxxx>]

Споделям мнението на цеци, подобни RAID контролери много рядко са добър избор, 
Причините да са лош избор са следните:
1. Трудно се подкарват да работят правилно
2. При счупване на масива ти си ограничен до софтуера който имаш в BIOS-а и 
съответно има много ситуации в които все едно нямаш RAID
3. В повечето случаи софтуерният RAID на Linux ядрото вади по добър 
performance отколкото този на дъното.

Поздрави
Мариян

On Monday 08 December 2008 21:30:57 ceci v wrote:
> Що за "хардуерен" райд може да е това, след като му виждаш дисковете по
> отделно ?!?
>
> П.С. според мен си ползвай софтуерния ... по-малко главоболия ще те
> сполетят.
>
> Поздрави,
> Цветин.
>
>
>
>
> ________________________________
> From: Атанас Мавров / Atanas Mavrov <bugar@xxxxxxxxxxxx>
> To: lug-bg@xxxxxxxxxxxxxxxxxx
> Sent: Monday, December 8, 2008 7:54:28 PM
> Subject: [Lug-bg] RAID и debian
>
> Здравейте,
> имам следния проблем, ще се радвам ако някой може да помогне - става въпрос
> за RAID контролер INTEL 82801HR/HO/HH (дъното е supermicro X7SBL-LN2).
> Опитвам се да използвам хардуерния RAID, но нещо не мога да се справя. Ето
> какво съм пробвал до сега - debian netinstaller (4.0r5). От BIOS -а имам
> две възможни настройки за RAID -а INTEL/Adaptec. И така -  с INTEL създавам
> RAID (1) масив, инсталацията започва, но когато стигна до разделянето на
> исковете, вместо един диск се виждат двата. Разбира се мога да разделя
> единия и да инсталирам ОС, но след като рестартирам се изписва само GRUB и
> толкова, но така или иначе това не е решение. Ако се опитам да използвам
> Adaptec изобщо не намира дисковете.
> Накрая за да тръгне GRUB -а изкарах единия диск от масива и инсталирах ОС,
> сложих и софтуерен RAID, ще прикача и dmesg -а ако може да помогне.
>
> Благодаря Ви и поздрави!
>
> Linux version 2.6.18-6-686 (Debian 2.6.18.dfsg.1-23) (dannf@xxxxxxxxxx)
> (gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)) #1 SMP Mon Oct
> 13 16:13:09 UTC 2008
> BIOS-provided physical RAM map:
> BIOS-e820: 0000000000000000 - 0000000000096000 (usable)
> BIOS-e820: 0000000000096000 - 00000000000a0000 (reserved)
> BIOS-e820: 00000000000ce000 - 00000000000d0000 (reserved)
> BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
> BIOS-e820: 0000000000100000 - 000000007fe70000 (usable)
> BIOS-e820: 000000007fe70000 - 000000007fe7c000 (ACPI data)
> BIOS-e820: 000000007fe7c000 - 000000007fe7f000 (ACPI NVS)
> BIOS-e820: 000000007fe7f000 - 0000000080000000 (reserved)
> BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
> BIOS-e820: 00000000fec00000 - 00000000fed00000 (reserved)
> BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
> BIOS-e820: 00000000ff000000 - 0000000100000000 (reserved)
> 1150MB HIGHMEM available.
> 896MB LOWMEM available.
> found SMP MP-table at 000f69c0
> On node 0 totalpages: 523888
>   DMA zone: 4096 pages, LIFO batch:0
>   Normal zone: 225280 pages, LIFO batch:31
>   HighMem zone: 294512 pages, LIFO batch:31
> DMI present.
> ACPI: RSDP (v002 PTLTD                                 ) @ 0x000f6990
> ACPI: XSDT (v001 SHIMAS  SDS-ONE 0x06040000  LTP 0x00000000) @ 0x7fe730b9
> ACPI: FADT (v003 INTEL           0x06040000 PTL  0x00000002) @ 0x7fe7b440
> ACPI: _MAR (v001 Intel  OEMDMAR  0x06040000 LOHR 0x00000001) @ 0x7fe7b534
> ACPI: TCPA (v001 Intel           0x06040000 PTL  0x0000005a) @ 0x7fe7b564
> ACPI: MCFG (v001 PTLTD    MCFG   0x06040000  LTP 0x00000000) @ 0x7fe7b596
> ACPI: MADT (v001 PTLTD       APIC   0x06040000  LTP 0x00000000) @
> 0x7fe7b5d2 ACPI: BOOT (v001 PTLTD  $SBFTBL$ 0x06040000  LTP 0x00000001) @
> 0x7fe7b63a ACPI: SPCR (v001 PTLTD  $UCRTBL$ 0x06040000 PTL  0x00000001) @
> 0x7fe7b662 ACPI: ERST (v001 SMCI   ERSTTBL  0x06040000 SMCI 0x00000001) @
> 0x7fe7b6b2 ACPI: HEST (v001 SMCI   HESTTBL  0x06040000 SMCI 0x00000001) @
> 0x7fe7bc42 ACPI: BERT (v001 SMCI   BERTTBL  0x06040000 SMCI 0x00000001) @
> 0x7fe7bcea ACPI: EINJ (v001 SMCI   EINJTBL  0x06040000 SMCI 0x00000001) @
> 0x7fe7bd1a ACPI: SLIC (v001 SHIMAS  SDS-ONE 0x06040000  LTP 0x00000000) @
> 0x7fe7be8a ACPI: SSDT (v001  PmRef  Cpu0Tst 0x00003000 INTL 0x20050228) @
> 0x7fe749f8 ACPI: SSDT (v001  PmRef  Cpu7Tst 0x00003000 INTL 0x20050228) @
> 0x7fe74952 ACPI: SSDT (v001  PmRef  Cpu6Tst 0x00003000 INTL 0x20050228) @
> 0x7fe748ac ACPI: SSDT (v001  PmRef  Cpu5Tst 0x00003000 INTL 0x20050228) @
> 0x7fe74806 ACPI: SSDT (v001  PmRef  Cpu4Tst 0x00003000 INTL 0x20050228) @
> 0x7fe74760 ACPI: SSDT (v001  PmRef  Cpu3Tst 0x00003000 INTL 0x20050228) @
> 0x7fe746ba ACPI: SSDT (v001  PmRef  Cpu2Tst 0x00003000 INTL 0x20050228) @
> 0x7fe74614 ACPI: SSDT (v001  PmRef  Cpu1Tst 0x00003000 INTL 0x20050228) @
> 0x7fe7456e ACPI: SSDT (v001  PmRef    CpuPm 0x00003000 INTL 0x20050228) @
> 0x7fe73185 ACPI: DSDT (v001  INTEL BEARLAKE 0x06040000 MSFT 0x03000000) @
> 0x00000000 ACPI: PM-Timer IO Port: 0x1008
> ACPI: Local APIC address 0xfee00000
> ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
> Processor #0 7:7 APIC version 20
> ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
> Processor #1 7:7 APIC version 20
> ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
> ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
> ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0])
> IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
> ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 high edge)
> ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
> ACPI: IRQ0 used by override.
> ACPI: IRQ2 used by override.
> ACPI: IRQ9 used by override.
> Enabling APIC mode:  Flat.  Using 1 I/O APICs
> Using ACPI (MADT) for SMP configuration information
> Allocating PCI resources starting at 88000000 (gap: 80000000:60000000)
> Detected 2660.130 MHz processor.
> Built 1 zonelists.  Total pages: 523888
> Kernel command line: root=/dev/md2 ro
> mapped APIC to ffffd000 (fee00000)
> mapped IOAPIC to ffffc000 (fec00000)
> Enabling fast FPU save and restore... done.
> Enabling unmasked SIMD FPU exception support... done.
> Initializing CPU#0
> PID hash table entries: 4096 (order: 12, 16384 bytes)
> Console: colour VGA+ 80x25
> Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
> Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
> Memory: 2072628k/2095552k available (1541k kernel code, 21636k reserved,
> 580k data, 196k init, 1178048k highmem)
> Checking if this processor honours the WP bit even in supervisor mode...
> Ok. Calibrating delay using timer specific routine.. 5323.93 BogoMIPS
> (lpj=10647860)
> Security Framework v1.0.0 initialized
> SELinux:  Disabled at boot.
> Capability LSM initialized
> Mount-cache hash table entries: 512
> CPU: After generic identify, caps: bfebfbff 20100000 00000000 00000000
> 0008e39d 00000000 00000001
> CPU: After vendor identify, caps: bfebfbff 20100000 00000000 00000000
> 0008e39d 00000000 00000001
> monitor/mwait feature present.
> using mwait in idle threads.
> CPU: L1 I cache: 32K, L1 D cache: 32K
> CPU: L2 cache: 3072K
> CPU: Physical Processor ID: 0
> CPU: Processor Core ID: 0
> CPU: After all inits, caps: bfebfbff 20100000 00000000 00000940 0008e39d
> 00000000 00000001
> Intel machine check architecture supported.
> Intel machine check reporting enabled on CPU#0.
> Compat vDSO mapped to ffffe000.
> Checking 'hlt' instruction... OK.
> SMP alternatives: switching to UP code
> ACPI: Core revision 20060707
> CPU0: Intel(R) Core(TM)2 Duo CPU     E7300  @ 2.66GHz stepping 06
> SMP alternatives: switching to SMP code
> Booting processor 1/1 eip 3000
> Initializing CPU#1
> Calibrating delay using timer specific routine.. 5320.33 BogoMIPS
> (lpj=10640667)
> CPU: After generic identify, caps: bfebfbff 20100000 00000000 00000000
> 0008e39d 00000000 00000001
> CPU: After vendor identify, caps: bfebfbff 20100000 00000000 00000000
> 0008e39d 00000000 00000001
> monitor/mwait feature present.
> CPU: L1 I cache: 32K, L1 D cache: 32K
> CPU: L2 cache: 3072K
> CPU: Physical Processor ID: 0
> CPU: Processor Core ID: 1
> CPU: After all inits, caps: bfebfbff 20100000 00000000 00000940 0008e39d
> 00000000 00000001
> Intel machine check architecture supported.
> Intel machine check reporting enabled on CPU#1.
> CPU1: Intel(R) Core(TM)2 Duo CPU     E7300  @ 2.66GHz stepping 06
> Total of 2 processors activated (10644.26 BogoMIPS).
> ENABLING IO-APIC IRQs
> ..TIMER: vector=0x31 apic1=0 pin1=2 apic2=-1 pin2=-1
> checking TSC synchronization across 2 CPUs: passed.
> Brought up 2 CPUs
> migration_cost=32
> checking if image is initramfs...it isn't (bad gzip magic numbers); looks
> like an initrd
> Freeing initrd memory: 1720k freed
> NET: Registered protocol family 16
> ACPI: bus type pci registered
> PCI: Using MMCONFIG
> Setting up standard PCI resources
> ACPI: Interpreter enabled
> ACPI: Using IOAPIC for interrupt routing
> ACPI: PCI Root Bridge [PCI0] (0000:00)
> PCI: Probing PCI hardware (bus 00)
> Boot video device is 0000:11:04.0
> PCI: Transparent bridge - 0000:00:1e.0
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP1._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP5._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.EXP6._PRT]
> ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PCIB._PRT]
> ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 *5 6 7 10 11 12 14 15)
> ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 *10 11 12 14 15)
> ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 10 *11 12 14 15)
> ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 10 11 12 14 15) *0,
> disabled. ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 10 11 12 14 15)
> *0, disabled. ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 10 11 12 14
> 15) *0, disabled. ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 10 *11 12
> 14 15)
> ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 *10 11 12 14 15)
> Linux Plug and Play Support v0.97 (c) Adam Belay
> pnp: PnP ACPI init
> pnp: PnP ACPI: found 12 devices
> PnPBIOS: Disabled by ACPI PNP
> PCI: Using ACPI for IRQ routing
> PCI: If a device doesn't work, try "pci=routeirq".  If it helps, post a
> report PCI: Cannot allocate resource region 7 of bridge 0000:00:1c.0
> PCI: Bridge: 0000:00:1c.0
>   IO window: disabled.
>   MEM window: disabled.
>   PREFETCH window: disabled.
> PCI: Bridge: 0000:00:1c.4
>   IO window: 2000-2fff
>   MEM window: de100000-de1fffff
>   PREFETCH window: disabled.
> PCI: Bridge: 0000:00:1c.5
>   IO window: 3000-3fff
>   MEM window: de200000-de2fffff
>   PREFETCH window: disabled.
> PCI: Ignore bogus resource 6 [0:0] of 0000:11:04.0
> PCI: Bridge: 0000:00:1e.0
>   IO window: 4000-4fff
>   MEM window: de000000-de0fffff
>   PREFETCH window: dc000000-ddffffff
> ACPI: PCI Interrupt 0000:00:1c.0[A] -> GSI 16 (level, low) -> IRQ 169
> PCI: Setting latency timer of device 0000:00:1c.0 to 64
> ACPI: PCI Interrupt 0000:00:1c.4[A] -> GSI 16 (level, low) -> IRQ 169
> PCI: Setting latency timer of device 0000:00:1c.4 to 64
> ACPI: PCI Interrupt 0000:00:1c.5[B] -> GSI 17 (level, low) -> IRQ 177
> PCI: Setting latency timer of device 0000:00:1c.5 to 64
> PCI: Setting latency timer of device 0000:00:1e.0 to 64
> NET: Registered protocol family 2
> IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
> TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
> TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
> TCP: Hash tables configured (established 131072 bind 65536)
> TCP reno registered
> Simple Boot Flag at 0x36 set to 0x1
> audit: initializing netlink socket (disabled)
> audit(1228778457.800:1): initialized
> highmem bounce pool size: 64 pages
> VFS: Disk quotas dquot_6.5.1
> Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
> Initializing Cryptographic API
> io scheduler noop registered
> io scheduler anticipatory registered
> io scheduler deadline registered
> io scheduler cfq registered (default)
> PCI: Setting latency timer of device 0000:00:1c.0 to 64
> assign_interrupt_mode Found MSI capability
> Allocate Port Service[0000:00:1c.0:pcie00]
> Allocate Port Service[0000:00:1c.0:pcie02]
> Allocate Port Service[0000:00:1c.0:pcie03]
> PCI: Setting latency timer of device 0000:00:1c.4 to 64
> assign_interrupt_mode Found MSI capability
> Allocate Port Service[0000:00:1c.4:pcie00]
> Allocate Port Service[0000:00:1c.4:pcie02]
> Allocate Port Service[0000:00:1c.4:pcie03]
> PCI: Setting latency timer of device 0000:00:1c.5 to 64
> assign_interrupt_mode Found MSI capability
> Allocate Port Service[0000:00:1c.5:pcie00]
> Allocate Port Service[0000:00:1c.5:pcie02]
> Allocate Port Service[0000:00:1c.5:pcie03]
> isapnp: Scanning for PnP cards...
> isapnp: No Plug & Play device found
> Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
> serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> serial8250: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
> 00:09: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
> 00:0a: ttyS1 at I/O 0x2f8 (irq = 3) is a 16550A
> RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
> PNP: PS/2 Controller [PNP0303:KBC0,PNP0f13:MSE0] at 0x60,0x64 irq 1,12
> serio: i8042 AUX port at 0x60,0x64 irq 12
> serio: i8042 KBD port at 0x60,0x64 irq 1
> mice: PS/2 mouse device common for all mice
> TCP bic registered
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> NET: Registered protocol family 8
> NET: Registered protocol family 20
> Starting balanced_irq
> Using IPI No-Shortcut mode
> ACPI: (supports S0 S1 S4 S5)
> RAMDISK: cramfs filesystem found at block 0
> RAMDISK: Loading 1720KiB [1 disk] into ram disk... |/-\|/-\|<6>Time:
> tsc clocksource has been installed.
> /-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-
> \|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-\|/-
> \|/-\|/-\|/-\|/-\|/-\|/-\done.
> VFS: Mounted root (cramfs filesystem) readonly.
> Freeing unused kernel memory: 196k freed
> md: md driver 0.90.3 MAX_MD_DEVS=256, MD_SB_DISKS=27
> md: bitmap version 4.39
> md: raid1 personality registered for level 1
> SCSI subsystem initialized
> libata version 2.00 loaded.
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