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l1x/soft_raid_linux.md

Last active December 8, 2021 21:49
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Revisions

  1. l1x revised this gist Dec 8, 2021. 1 changed file with 24 additions and 4 deletions.
    28 changes: 24 additions & 4 deletions soft_raid_linux.md
    View file
    Original file line number Diff line number Diff line change
    @@ -1,11 +1,22 @@
    # Creating a mirror using two disks

    This uses the partition UUID to be able to tolarate device name changes.

    ```bash
    /sbin/mdadm --create /dev/md/nas0 \
    --level=mirror \
    --raid-devices=2 /dev/disk/by-id/ata-WDC_WD80EFBX-68AZZN0_VRHG67RK /dev/disk/by-id/ata-WDC_WD80EFBX-68AZZN0_VRJ8V8VK
    doas /sbin/mdadm \
    --verbose --create /dev/md/nas0 \
    --level=mirror --raid-devices=2 \
    /dev/disk/by-partuuid/7b139fcf-e971-4806-b0f9-cbbd8c1d24de \
    /dev/disk/by-partuuid/a11e2aa2-c404-48a1-8e3e-51a8dec0c967
    ```

    Creating a FS on the new device.

    ```bash
    doas /sbin/mkfs.xfs -f -b size=4096 -s size=4096 /dev/md/nas0
    ```

    Info about the array.

    ```
    ➜ rpi4-3.lan ~ doas /sbin/mdadm --verbose --detail /dev/md/nas0
    @@ -41,6 +52,8 @@ Consistency Policy : bitmap
    1 8 16 1 active sync /dev/sdb
    ```

    XFS info

    ```
    ➜ rpi4-3.lan ~ doas /sbin/xfs_info /dev/md0
    meta-data=/dev/md0 isize=512 agcount=8, agsize=268435455 blks
    @@ -55,16 +68,23 @@ log =internal log bsize=4096 blocks=521728, version=2
    realtime =none extsz=4096 blocks=0, rtextents=0
    ```

    After mounting

    ```
    ➜ rpi4-3.lan ~ df -h | grep nas
    /dev/md0 7.3T 52G 7.3T 1% /nas
    ```

    Tracking progress

    ```
    cat /proc/mdstat
    Personalities : [raid1]
    md0 : active raid1 sdc1[1] sdb1[0]
    7813893440 blocks super 1.2 [2/2] [UU]
    [=>...................] resync = 6.1% (483675520/7813893440) finish=736.3min speed=165908K/sec
    bitmap: 56/59 pages [224KB], 65536KB chunk
    ```
    ```

    Monitoring temperature

  2. l1x revised this gist Dec 8, 2021. 1 changed file with 3 additions and 1 deletion.
    4 changes: 3 additions & 1 deletion soft_raid_linux.md
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    Original file line number Diff line number Diff line change
    @@ -1,5 +1,7 @@
    ```bash
    /sbin/mdadm --create /dev/md/nas0 --level=mirror --raid-devices=2 /dev/disk/by-id/ata-WDC_WD80EFBX-68AZZN0_VRHG67RK /dev/disk/by-id/ata-WDC_WD80EFBX-68AZZN0_VRJ8V8VK
    /sbin/mdadm --create /dev/md/nas0 \
    --level=mirror \
    --raid-devices=2 /dev/disk/by-id/ata-WDC_WD80EFBX-68AZZN0_VRHG67RK /dev/disk/by-id/ata-WDC_WD80EFBX-68AZZN0_VRJ8V8VK

    doas /sbin/mkfs.xfs -f -b size=4096 -s size=4096 /dev/md/nas0
    ```
  3. l1x revised this gist Dec 8, 2021. 1 changed file with 15 additions and 14 deletions.
    29 changes: 15 additions & 14 deletions soft_raid_linux.md
    View file
    Original file line number Diff line number Diff line change
    @@ -1,24 +1,25 @@
    ```bash
    doas /sbin/mdadm --create /dev/md0 --level=mirror --raid-devices=2 /dev/sdb1 /dev/sdc1
    doas /sbin/mkfs.xfs -f -b size=4096 -s size=4096 /dev/md0
    /sbin/mdadm --create /dev/md/nas0 --level=mirror --raid-devices=2 /dev/disk/by-id/ata-WDC_WD80EFBX-68AZZN0_VRHG67RK /dev/disk/by-id/ata-WDC_WD80EFBX-68AZZN0_VRJ8V8VK

    doas /sbin/mkfs.xfs -f -b size=4096 -s size=4096 /dev/md/nas0
    ```


    ```
    ➜ rpi4-3.lan ~ doas /sbin/mdadm --verbose --detail /dev/md0
    /dev/md0:
    ➜ rpi4-3.lan ~ doas /sbin/mdadm --verbose --detail /dev/md/nas0
    /dev/md/nas0:
    Version : 1.2
    Creation Time : Tue Dec 7 18:39:36 2021
    Creation Time : Wed Dec 8 21:21:56 2021
    Raid Level : raid1
    Array Size : 7813893440 (7451.91 GiB 8001.43 GB)
    Used Dev Size : 7813893440 (7451.91 GiB 8001.43 GB)
    Array Size : 7813894464 (7451.91 GiB 8001.43 GB)
    Used Dev Size : 7813894464 (7451.91 GiB 8001.43 GB)
    Raid Devices : 2
    Total Devices : 2
    Persistence : Superblock is persistent
    Intent Bitmap : Internal
    Update Time : Tue Dec 7 18:59:12 2021
    Update Time : Wed Dec 8 21:25:34 2021
    State : clean, resyncing
    Active Devices : 2
    Working Devices : 2
    @@ -27,15 +28,15 @@ doas /sbin/mkfs.xfs -f -b size=4096 -s size=4096 /dev/md0
    Consistency Policy : bitmap
    Resync Status : 2% complete
    Resync Status : 0% complete
    Name : rpi4-3.lan:0 (local to host rpi4-3.lan)
    UUID : 5e6623f5:13829aaf:30df0981:32419ee2
    Events : 243
    Name : rpi4-3.lan:nas0 (local to host rpi4-3.lan)
    UUID : ff6bf993:818a61e4:83b9ed22:23d9176f
    Events : 46
    Number Major Minor RaidDevice State
    0 8 17 0 active sync /dev/sdb1
    1 8 33 1 active sync /dev/sdc1
    0 8 32 0 active sync /dev/sdc
    1 8 16 1 active sync /dev/sdb
    ```

    ```
  4. l1x revised this gist Dec 7, 2021. 1 changed file with 9 additions and 0 deletions.
    9 changes: 9 additions & 0 deletions soft_raid_linux.md
    View file
    Original file line number Diff line number Diff line change
    @@ -55,4 +55,13 @@ realtime =none extsz=4096 blocks=0, rtextents=0
    ```
    ➜ rpi4-3.lan ~ df -h | grep nas
    /dev/md0 7.3T 52G 7.3T 1% /nas
    ```

    ```
    cat /proc/mdstat
    Personalities : [raid1]
    md0 : active raid1 sdc1[1] sdb1[0]
    7813893440 blocks super 1.2 [2/2] [UU]
    [=>...................] resync = 6.1% (483675520/7813893440) finish=736.3min speed=165908K/sec
    bitmap: 56/59 pages [224KB], 65536KB chunk
    ```
  5. l1x revised this gist Dec 7, 2021. 1 changed file with 5 additions and 0 deletions.
    5 changes: 5 additions & 0 deletions soft_raid_linux.md
    View file
    Original file line number Diff line number Diff line change
    @@ -50,4 +50,9 @@ naming =version 2 bsize=4096 ascii-ci=0, ftype=1
    log =internal log bsize=4096 blocks=521728, version=2
    = sectsz=4096 sunit=1 blks, lazy-count=1
    realtime =none extsz=4096 blocks=0, rtextents=0
    ```

    ```
    ➜ rpi4-3.lan ~ df -h | grep nas
    /dev/md0 7.3T 52G 7.3T 1% /nas
    ```
  6. l1x renamed this gist Dec 7, 2021. 1 changed file with 7 additions and 2 deletions.
    9 changes: 7 additions & 2 deletions soft_raid_linux.sh → soft_raid_linux.md
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    @@ -1,6 +1,10 @@
    ```bash
    doas /sbin/mdadm --create /dev/md0 --level=mirror --raid-devices=2 /dev/sdb1 /dev/sdc1
    doas /sbin/mkfs.xfs -f -b size=4096 -s size=4096 /dev/md0
    ```


    ```
    ➜ rpi4-3.lan ~ doas /sbin/mdadm --verbose --detail /dev/md0
    /dev/md0:
    Version : 1.2
    @@ -32,8 +36,9 @@ Consistency Policy : bitmap
    Number Major Minor RaidDevice State
    0 8 17 0 active sync /dev/sdb1
    1 8 33 1 active sync /dev/sdc1
    ```


    ```
    ➜ rpi4-3.lan ~ doas /sbin/xfs_info /dev/md0
    meta-data=/dev/md0 isize=512 agcount=8, agsize=268435455 blks
    = sectsz=4096 attr=2, projid32bit=1
    @@ -45,4 +50,4 @@ naming =version 2 bsize=4096 ascii-ci=0, ftype=1
    log =internal log bsize=4096 blocks=521728, version=2
    = sectsz=4096 sunit=1 blks, lazy-count=1
    realtime =none extsz=4096 blocks=0, rtextents=0

    ```
  7. l1x revised this gist Dec 7, 2021. 1 changed file with 47 additions and 0 deletions.
    47 changes: 47 additions & 0 deletions soft_raid_linux.sh
    View file
    Original file line number Diff line number Diff line change
    @@ -1 +1,48 @@
    doas /sbin/mdadm --create /dev/md0 --level=mirror --raid-devices=2 /dev/sdb1 /dev/sdc1
    doas /sbin/mkfs.xfs -f -b size=4096 -s size=4096 /dev/md0

    ➜ rpi4-3.lan ~ doas /sbin/mdadm --verbose --detail /dev/md0
    /dev/md0:
    Version : 1.2
    Creation Time : Tue Dec 7 18:39:36 2021
    Raid Level : raid1
    Array Size : 7813893440 (7451.91 GiB 8001.43 GB)
    Used Dev Size : 7813893440 (7451.91 GiB 8001.43 GB)
    Raid Devices : 2
    Total Devices : 2
    Persistence : Superblock is persistent

    Intent Bitmap : Internal

    Update Time : Tue Dec 7 18:59:12 2021
    State : clean, resyncing
    Active Devices : 2
    Working Devices : 2
    Failed Devices : 0
    Spare Devices : 0

    Consistency Policy : bitmap

    Resync Status : 2% complete

    Name : rpi4-3.lan:0 (local to host rpi4-3.lan)
    UUID : 5e6623f5:13829aaf:30df0981:32419ee2
    Events : 243

    Number Major Minor RaidDevice State
    0 8 17 0 active sync /dev/sdb1
    1 8 33 1 active sync /dev/sdc1


    ➜ rpi4-3.lan ~ doas /sbin/xfs_info /dev/md0
    meta-data=/dev/md0 isize=512 agcount=8, agsize=268435455 blks
    = sectsz=4096 attr=2, projid32bit=1
    = crc=1 finobt=1, sparse=1, rmapbt=0
    = reflink=1 bigtime=0
    data = bsize=4096 blocks=1953473360, imaxpct=5
    = sunit=0 swidth=0 blks
    naming =version 2 bsize=4096 ascii-ci=0, ftype=1
    log =internal log bsize=4096 blocks=521728, version=2
    = sectsz=4096 sunit=1 blks, lazy-count=1
    realtime =none extsz=4096 blocks=0, rtextents=0

  8. l1x created this gist Dec 7, 2021.
    1 change: 1 addition & 0 deletions soft_raid_linux.sh
    View file
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    @@ -0,0 +1 @@
    doas /sbin/mdadm --create /dev/md0 --level=mirror --raid-devices=2 /dev/sdb1 /dev/sdc1