Test Diagnostic
mail-dakar:/# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sdb1[1]
732571904 blocks [2/1] [_U]
unused devices: <none>mail-dakar:/# fdisk -l Disk /dev/sdb: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 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: 0x0008f351 Device Boot Start End Blocks Id System /dev/sdb1 63 1465144064 732572001 fd Linux raid autodetect Disk /dev/sdd: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 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 Device Boot Start End Blocks Id System /dev/sdd1 63 1465144064 732572001 fd Linux raid autodetect Disk /dev/sda: 16.4 GB, 16372465664 bytes 255 heads, 63 sectors/track, 1990 cylinders, total 31977472 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: 0x00086626 Device Boot Start End Blocks Id System /dev/sda1 63 9767519 4883728+ 83 Linux /dev/sda2 9767520 11727449 979965 83 Linux /dev/sda3 11727450 21494969 4883760 83 Linux /dev/sda4 21494970 31969349 5237190 5 Extended /dev/sda5 21495033 25398764 1951866 82 Linux swap / Solaris /dev/sda6 25398828 31969349 3285261 83 Linux Disk /dev/sde: 750.2 GB, 750156374016 bytes 81 heads, 63 sectors/track, 287115 cylinders, total 1465149168 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: 0x000801ea Device Boot Start End Blocks Id System /dev/sde1 2048 1465149167 732573560 83 Linux
mail-dakar:~# smartctl -a /dev/sdc smartctl 5.41 2011-06-09 r3365 [x86_64-linux-3.2.0-4-amd64] (local build) Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net === START OF INFORMATION SECTION === Device Model: ST_M13FQBL Serial Number: QNR_BFW Firmware Version: 0414F34C User Capacity: 4 142 054 400 bytes [4,14 GB] Sector Size: 512 bytes logical/physical Device is: Not in smartctl database [for details use: -P showall] ATA Version is: 6 ATA Standard is: ATA/ATAPI-6 T13 1410D revision 2 Local Time is: Fri Jul 10 16:36:19 2015 GMT SMART support is: Available - device has SMART capability. SMART support is: Enabled Error SMART Values Read failed: scsi error aborted command Smartctl: SMART Read Values failed. === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: UNKNOWN! SMART Status, Attributes and Thresholds cannot be read. Error SMART Error Log Read failed: scsi error aborted command Smartctl: SMART Error Log Read Failed Error SMART Error Self-Test Log Read failed: scsi error aborted command Smartctl: SMART Self Test Log Read Failed Device does not support Selective Self Tests/Logging
Conclusion
Le disque défectueux est donc le disque /dev/sdc1
Résolution du soucis
- Déclaration du disque defectueux
mdadm --manage /dev/md0 --fail /dev/sdc1
- Suppression du disque /dev/sdc1 du volume RAID md0
mail-dakar:/# mdadm --manage /dev/md0 --remove /dev/sdc1
- Arret du serveur puis remplacement du disque
- Copie de la table de partition
sfdisk -d /dev/sdb | sfdisk /dev/sde
* Ajout du disque /dev/sde1 au volume RAId mdo
mdadm --manage /dev/md0 --add /dev/sde1
* On suit la progression de la recontruction du RAID, Puis verification à la fin
mail-dakar:~# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sde1[0] sdb1[1]
732571904 blocks [2/2] [UU]
unused devices: <none>