Bug 91611
| Summary: | md_autodetect | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Dmitry (r500) |
| Component: | Other | Assignee: | drivers_other |
| Status: | NEW --- | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | Intel | ||
| OS: | Linux | ||
| Kernel Version: | 3.18.3 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
The kernel does not autodetect raid arrays as part of its boot process. resq:/# uname -a Linux resq 3.18.3 #1 SMP Tue Jan 20 11:49:36 EET 2015 x86_64 GNU/Linux resq:/# gunzip -dc /proc/config.gz|grep -i _md_ CONFIG_MD_AUTODETECT=y # CONFIG_MD_LINEAR is not set # CONFIG_MD_RAID0 is not set CONFIG_MD_RAID1=y # CONFIG_MD_RAID10 is not set # CONFIG_MD_RAID456 is not set # CONFIG_MD_MULTIPATH is not set # CONFIG_MD_FAULTY is not set resq:/# dmesg|grep -i raid [ 0.575628] md: raid1 personality registered for level 1 resq:/# cat /proc/mdstat Personalities : [raid1] unused devices: <none> resq:/# sfdisk -d /dev/sd[ab] # partition table of /dev/sda unit: sectors /dev/sda1 : start= 64, size= 2056256, Id= b /dev/sda2 : start= 2056320, size=268349760, Id=fd /dev/sda3 : start=270406080, size=268349760, Id=fd /dev/sda4 : start=538755840, size=438017328, Id=fd # partition table of /dev/sdb unit: sectors /dev/sdb1 : start= 64, size= 2056256, Id= b /dev/sdb2 : start= 2056320, size=268349760, Id=fd /dev/sdb3 : start=270406080, size=268349760, Id=fd /dev/sdb4 : start=538755840, size=438017328, Id=fd resq:/# cat /proc/cmdline root=/dev/ram rw vga=0 ipv6.disable=1 panic=30 Hands everything works fine: resq:/# mdadm -A /dev/md0 /dev/sd[ab]2 mdadm: /dev/md0 has been started with 2 drives. resq:/# mdadm -A /dev/md1 /dev/sd[ab]3 mdadm: /dev/md1 has been started with 2 drives. resq:/# mdadm -A /dev/md2 /dev/sd[ab]4 mdadm: /dev/md2 has been started with 2 drives. resq:/# cat /proc/mdstat Personalities : [raid1] md2 : active raid1 sda4[0] sdb4[1] 219008576 blocks [2/2] [UU] md1 : active raid1 sda3[0] sdb3[1] 134174784 blocks [2/2] [UU] md0 : active raid1 sda2[0] sdb2[1] 134174784 blocks [2/2] [UU] unused devices: <none> resq:/# mdadm -D /dev/md0 /dev/md0: Version : 0.90 Creation Time : Tue Jan 20 09:24:35 2015 Raid Level : raid1 Array Size : 134174784 (127.96 GiB 137.39 GB) Used Dev Size : 134174784 (127.96 GiB 137.39 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Tue Jan 20 09:30:48 2015 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : 202ffd29:ee258f3d:d6159ac9:ae4e48bd (local to host resq) Events : 0.1 Number Major Minor RaidDevice State 0 8 2 0 active sync /dev/sda2 1 8 18 1 active sync /dev/sdb2 resq:/# mdadm -D /dev/md[012]|grep -i version Version : 0.90 Version : 0.90 Version : 0.90 Additional information: http://www.tts.lt/resq_config.gz http://www.tts.lt/resq_dmesg.gz