RAID Management tab empty following reboot.

  • I'm trying not to panic but, like many others on here, my RAID 5 array has disappeared from the RAID Management tab.



    root@NewNAS:~# cat /proc/mdstat
    Personalities : [raid6] [raid5] [raid4]
    md0 : inactive sde[0] sdd[1]
    2930015024 blocks super 1.2


    unused devices: <none>



    root@NewNAS:~# blkid
    /dev/sda1: UUID="2c42c260-fe3f-4e01-844f-b2d05c5ccbdc" TYPE="ext4"
    /dev/sda5: UUID="7bf5a742-b8f5-4cfd-a423-f64b6053473a" TYPE="swap"
    /dev/sdd: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="f48bd061-264d-c31b-745d-37d37e952ed4" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"
    /dev/sde: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="849ea4e2-42a0-a480-4b95-3afac1b30ab5" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"
    /dev/sdb: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="46e3f145-3155-aa59-98c0-f1cfcbef8328" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"
    /dev/sdc: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="7f5c8193-c93e-4627-b3f2-de40698a99c8" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"



    root@NewNAS:~# fdisk -l


    Disk /dev/sda: 41.1 GB, 41110142976 bytes
    255 heads, 63 sectors/track, 4998 cylinders, total 80293248 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: 0x000b1989


    Device Boot Start End Blocks Id System
    /dev/sda1 * 2048 76939263 38468608 83 Linux
    /dev/sda2 76941310 80291839 1675265 5 Extended
    /dev/sda5 76941312 80291839 1675264 82 Linux swap / Solaris


    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/sdd: 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/sdd doesn't contain a valid partition table


    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 / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x00000000


    Disk /dev/sde 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




    Please tell me that I haven't lost my data! My Linux isn't great but I can follow instructions!


    Many thanks in anticipation of your sage advice...

  • I've just found the SupportInfo tab - here is the "degraded array info":


    Personalities : [raid6] [raid5] [raid4]
    md0 : inactive sde[0] sdd[1]
    2930015024 blocks super 1.2


    unused devices: <none>
    /dev/sda1: UUID="2c42c260-fe3f-4e01-844f-b2d05c5ccbdc" TYPE="ext4"
    /dev/sda5: UUID="7bf5a742-b8f5-4cfd-a423-f64b6053473a" TYPE="swap"
    /dev/sdd: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="f48bd061-264d-c31b-745d-37d37e952ed4" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"
    /dev/sde: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="849ea4e2-42a0-a480-4b95-3afac1b30ab5" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"


    Disk /dev/sda: 41.1 GB, 41110142976 bytes
    255 heads, 63 sectors/track, 4998 cylinders, total 80293248 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: 0x000b1989


    Device Boot Start End Blocks Id System
    /dev/sda1 * 2048 76939263 38468608 83 Linux
    /dev/sda2 76941310 80291839 1675265 5 Extended
    /dev/sda5 76941312 80291839 1675264 82 Linux swap / Solaris


    Disk /dev/sdd: 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/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 / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x00000000

  • Drives sdb and sdc have now returned.


    Personalities : [raid6] [raid5] [raid4]
    md0 : inactive sde[0] sdd[1]
    2930015024 blocks super 1.2


    unused devices: <none>
    /dev/sda1: UUID="2c42c260-fe3f-4e01-844f-b2d05c5ccbdc" TYPE="ext4"
    /dev/sda5: UUID="7bf5a742-b8f5-4cfd-a423-f64b6053473a" TYPE="swap"
    /dev/sdd: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="f48bd061-264d-c31b-745d-37d37e952ed4" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"
    /dev/sde: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="849ea4e2-42a0-a480-4b95-3afac1b30ab5" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"
    /dev/sdb: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="46e3f145-3155-aa59-98c0-f1cfcbef8328" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"
    /dev/sdc: UUID="ff2c4dc1-c4fc-1a51-45d7-0c0c40337dae" UUID_SUB="7f5c8193-c93e-4627-b3f2-de40698a99c8" LABEL="NewNAS:NewNASRAIDArray" TYPE="linux_raid_member"


    Disk /dev/sda: 41.1 GB, 41110142976 bytes
    255 heads, 63 sectors/track, 4998 cylinders, total 80293248 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: 0x000b1989


    Device Boot Start End Blocks Id System
    /dev/sda1 * 2048 76939263 38468608 83 Linux
    /dev/sda2 76941310 80291839 1675265 5 Extended
    /dev/sda5 76941312 80291839 1675264 82 Linux swap / Solaris


    Disk /dev/sdd: 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/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 / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk identifier: 0x00000000


    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/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

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