Hi,
I'm trying to add a larger spare in replacement to a smaller one. I'm
really stuck here.... ;(
Here is what I did : --fail /dev/sdc then --remove /dev/sdc
Added the new one (which is also sdc now) can't assemble the new one !
If I try to assemble here is what it comes :
---------------------------------------------------------
root@Zetta:~# mdadm --assemble /dev/md0 --verbose /dev/sdc
mdadm: looking for devices for /dev/md0
mdadm: /dev/sdc is busy - skipping
-------------------------------------------------------
If I tried to stop the array and assemble, here is what it comes :
--------------------------------
root@Zetta:~# mdadm --assemble /dev/md0 --verbose /dev/sdc
mdadm: looking for devices for /dev/md0
mdadm: /dev/sdc is identified as a member of /dev/md0, slot -1.
mdadm: no uptodate device for slot 0 of /dev/md0
mdadm: no uptodate device for slot 1 of /dev/md0
mdadm: no uptodate device for slot 2 of /dev/md0
mdadm: no uptodate device for slot 3 of /dev/md0
mdadm: no uptodate device for slot 4 of /dev/md0
mdadm: no uptodate device for slot 5 of /dev/md0
mdadm: added /dev/sdc to /dev/md0 as -1
mdadm: /dev/md0 assembled from 0 drives and 1 spare - not enough to
start the array
-------------------------------------------------
Thanks for your help !!!!!
Here some infos (I had a sdg larger than 1,5 to)
------------------------------------
root@Zetta:~# blockdev --getsize64 /dev/sd[abcefg] 1500301910016
2000398934016 2000398934016 1500301910016 1500301910016 2000398934016
---------------------------------------------------------------------------------------------
root@Zetta:~# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : inactive sdf[0] sdc[7](S) sdg[6] sdb[4] sde[3] sda[2]
10255693264 blocks super 1.2
unused devices: <none>
---------------------------------------------------------------------------------------------
root@Zetta:~# mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Sat Aug 31 01:10:06 2013
Raid Level : raid6
Used Dev Size : 1465137152 (1397.26 GiB 1500.30 GB)
Raid Devices : 6
Total Devices : 6
Persistence : Superblock is persistent
Update Time : Fri Jun 23 15:43:33 2017
State : active, degraded, Not Started
Active Devices : 5
Working Devices : 6
Failed Devices : 0
Spare Devices : 1
Layout : left-symmetric
Chunk Size : 512K
Name : zetta:0
UUID : 96b0e7b7:83aa203f:1545031b:43caaa85
Events : 54841
Number Major Minor RaidDevice State
0 8 80 0 active sync /dev/sdf
1 0 0 1 removed
2 8 0 2 active sync /dev/sda
3 8 64 3 active sync /dev/sde
4 8 16 4 active sync /dev/sdb
6 8 96 5 active sync /dev/sdg
7 8 32 - spare /dev/sdc
--------------------------------------------------------------------------------------------------------------------
root@Zetta:~# fdisk -l
Disk /dev/sda: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Disk /dev/sda doesn't contain a valid partition table
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdc doesn't contain a valid partition table
Disk /dev/sdd: 100.0 GB, 100030242816 bytes
255 heads, 63 sectors/track, 12161 cylinders, total 195371568 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0008101c
Device Boot Start End Blocks Id System
/dev/sdd1 * 2048 187367423 93682688 83 Linux
/dev/sdd2 187369470 195371007 4000769 5 Extended
/dev/sdd5 187369472 195371007 4000768 82 Linux swap / Solaris
Disk /dev/sde: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sde doesn't contain a valid partition table
Disk /dev/sdf: 1500.3 GB, 1500301910016 bytes
255 heads, 63 sectors/track, 182401 cylinders, total 2930277168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdf doesn't contain a valid partition table
Disk /dev/sdg: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000
Disk /dev/sdg doesn't contain a valid partition table
------------------------------------------------------------------------------------------
root@Zetta:~# blkid
/dev/sda: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85"
UUID_SUB="70983681-b5c2-9f70-1801-948b1b7c97d1" LABEL="zetta:0"
TYPE="linux_raid_member"
/dev/sdb: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85"
UUID_SUB="66843575-1a9c-30a6-8172-29f3ded468dc" LABEL="zetta:0"
TYPE="linux_raid_member"
/dev/sde: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85"
UUID_SUB="ee7eab8f-dc90-e3be-146d-a4e09d104418" LABEL="zetta:0"
TYPE="linux_raid_member"
/dev/sdf: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85"
UUID_SUB="b2460066-00b1-5070-cfe3-7ac67aae96c1" LABEL="zetta:0"
TYPE="linux_raid_member"
/dev/sdc: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85"
UUID_SUB="06bd9fd3-7b1a-b0e0-b9f0-029882f39624" LABEL="zetta:0"
TYPE="linux_raid_member"
/dev/sdd1: UUID="b364f189-c9af-4774-92ba-a49307966cf7" TYPE="ext4"
/dev/sdd5: UUID="c78b6a64-1caa-4290-bc1a-eebe67731ca5" TYPE="swap"
/dev/sdg: UUID="96b0e7b7-83aa-203f-1545-031b43caaa85"
UUID_SUB="440f9a88-1d42-020c-ba4d-d303afb76c7c" LABEL="zetta:0"
TYPE="linux_raid_member"
------------------------------------------------------------------------------------------------------------
mdadm -E /dev/sd[abcefg]
https://pastebin.com/zzz3jFvP
-------------------------------------------------------------------------------------------------------------------
mdadm.conf :
DEVICE partitions CREATE owner=root group=disk mode=0660 auto=yes
HOMEHOST <system> ARRAY /dev/md/zetta:0 metadata=1.2 name=zetta:0
UUID=96b0e7b7:83aa203f:1545031b:43caaa85
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
