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LauPro
n00b
Joined: 05 Jan 2004
Posts: 43
Location: Gelderland, The Netherlands
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 Posted: Mon Jul 09, 2007 4:18 pm Post subject: Software RAID broken / mdadm segfaults [SOLVED] |
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I have a software RAID5 array with 3 devices, the config: | Code: | raiddev /dev/md0
raid-level 5
nr-raid-disks 3
nr-spare-disks 0
persistent-superblock 0
parity-algorithm left-symmetric
chunk-size 128
device /dev/sdb
raid-disk 0
device /dev/sdc
raid-disk 1
device /dev/sdd
raid-disk 2 |
When i try to start this array a segfault occurs: | Code: | # mdadm --assemble /dev/md0 /dev/sdb /dev/sdc /dev/sdd
# dmesg
md: md0 stopped.
mdadm[15041]: segfault at 000000000056c8b0 rip 00000000004167e4 rsp 00007fff18e03190 error 4 |
The kernel configuration seems okay: | Code: | # grep -i raid /usr/src/linux/.config
CONFIG_RAID_ATTRS=m
# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
# CONFIG_SCSI_AACRAID is not set
# CONFIG_MEGARAID_NEWGEN is not set
# CONFIG_MEGARAID_LEGACY is not set
# CONFIG_MEGARAID_SAS is not set
# Multi-device support (RAID and LVM)
CONFIG_MD_RAID0=m
CONFIG_MD_RAID1=m
CONFIG_MD_RAID10=m
CONFIG_MD_RAID456=m
# CONFIG_MD_RAID5_RESHAPE is not set |
And the loaded modules: | Code: | # lsmod
Module Size Used by
linear 9216 0
multipath 11776 0
raid0 10880 0
raid1 23808 0
raid456 119072 0
xor 9872 1 raid456
md_mod 71580 6 linear,multipath,raid0,raid1,raid456 |
What is the reason that mdadm segfaults? I seems like some version conflict.
Last edited by LauPro on Thu Jul 12, 2007 1:12 am; edited 1 time in total |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54834
Location: 56N 3W
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| Posted: Mon Jul 09, 2007 5:57 pm Post subject: |
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LauPro,
It looks like your mdadm is broken - try
A segfault means the program tried to access some memory its not supposed to.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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LauPro
n00b
Joined: 05 Jan 2004
Posts: 43
Location: Gelderland, The Netherlands
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| Posted: Mon Jul 09, 2007 11:48 pm Post subject: |
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I've tried to reemerge the package but i get still the segfault, also when i compile the options as builtin and reboot for the new kernel.
Maybe it has something to do with the order of loading the modules? One module for a SATA-controller is loaded after the md-stuff: | Code: | md: Autodetecting RAID arrays.
md: autorun ...
md: ... autorun DONE.
scsi3 : sata_sil
ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata4.00: ATA-7, max UDMA/133, 398297088 sectors: LBA48 NCQ (depth 0/32)
ata4.00: ata4: dev 0 multi count 16
ata4.00: configured for UDMA/100
scsi 2:0:0:0: Direct-Access ATA Maxtor 6L200M0 BANC PQ: 0 ANSI: 5
SCSI device sdc: 398297088 512-byte hdwr sectors (203928 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
SCSI device sdc: 398297088 512-byte hdwr sectors (203928 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdc: unknown partition table
sd 2:0:0:0: Attached scsi disk sdc
sd 2:0:0:0: Attached scsi generic sg2 type 0
scsi 3:0:0:0: Direct-Access ATA Maxtor 6B200M0 BANC PQ: 0 ANSI: 5
SCSI device sdd: 398297088 512-byte hdwr sectors (203928 MB)
sdd: Write Protect is off
sdd: Mode Sense: 00 3a 00 00
SCSI device sdd: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
SCSI device sdd: 398297088 512-byte hdwr sectors (203928 MB)
sdd: Write Protect is off
sdd: Mode Sense: 00 3a 00 00
SCSI device sdd: write cache: enabled, read cache: enabled, doesn't support DPO or FUA
sdd: unknown partition table
sd 3:0:0:0: Attached scsi disk sdd
sd 3:0:0:0: Attached scsi generic sg3 type 0
VP_IDE: IDE controller at PCI slot 0000:00:0f.1
ACPI: PCI Interrupt 0000:00:0f.1[A] -> Link [ALKA] -> GSI 20 (level, low) -> IRQ 20
VP_IDE: chipset revision 6
VP_IDE: not 100% native mode: will probe irqs later
VP_IDE: VIA vt8237 (rev 00) IDE UDMA133 controller on pci0000:00:0f.1
ide0: BM-DMA at 0xdc00-0xdc07, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xdc08-0xdc0f, BIOS settings: hdc:pio, hdd:pio
Probing IDE interface ide0...
hda: _NEC DVD+RW ND-1100A, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
Probing IDE interface ide1...
ACPI: PCI Interrupt Link [ALKC] enabled at IRQ 22
ACPI: PCI Interrupt 0000:00:11.5[C] -> Link [ALKC] -> GSI 22 (level, low) -> IRQ 22
PCI: Setting latency timer of device 0000:00:11.5 to 64
hda: ATAPI 40X DVD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
ACPI: PCI Interrupt 0000:00:09.0[A] -> GSI 17 (level, low) -> IRQ 17
PCI: Enabling device 0000:01:00.0 (0000 -> 0002)
ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 16
NVRM: loading NVIDIA UNIX x86_64 Kernel Module 100.14.11 Wed Jun 13 16:33:22 PDT 2007
Probing IDE interface ide1...
md: md0 stopped.
mdadm[3225]: segfault at 000000000056c830 rip 00000000004167e4 rsp 00007fffda12e570 error 4
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LauPro
n00b
Joined: 05 Jan 2004
Posts: 43
Location: Gelderland, The Netherlands
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| Posted: Thu Jul 12, 2007 1:11 am Post subject: |
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| I've solved the problem by first adding 2 disks to the array and then rebuild it with the third. It seems there was some kind of misconfiguration that triggered the segfault. |
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Kernel & Hardware
