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  • 1.  FCtool usage with HANA storage client

    Posted Mon November 15, 2021 08:56 AM
    Hello,

    we are trying to configure FCtool (version 4.3.5) for our QAS HANA DB. It is 4+1 scale-out DB.
    Data and log volumes don't reside on shared FS but each volume is mounted using HANA storage client.

    HANA storage client configuration in global.ini file:
    [storage]
    ha_provider = hdb_ha.fcClientLVM
    partition_*_*__prtype = 5
    partition_1_data__lvmname = VG_node1_DATA_QAS-LV_node1_DATA_QAS
    partition_1_log__lvmname = VG_node1_LOG_QAS-LV_node1_LOG_QAS
    partition_2_data__lvmname = VG_node2_DATA_QAS-LV_node2_DATA_QAS
    partition_2_log__lvmname = VG_node2_LOG_QAS-LV_node2_LOG_QAS
    partition_3_data__lvmname = VG_node3_DATA_QAS-LV_node3_DATA_QAS
    partition_3_log__lvmname = VG_node3_LOG_QAS-LV_node3_LOG_QAS
    partition_4_data__lvmname = VG_node4_DATA_QAS-LV_node4_DATA_QAS
    partition_4_log__lvmname = VG_node4_LOG_QAS-LV_node4_LOG_QAS


    Data and log volumes mountpoints:
    qasadm@node1:~> mount | grep QAS/mnt
    /dev/mapper/VG_node1_LOG_QAS-LV_node1_LOG_QAS on /hana/log/QAS/mnt00001 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,sunit=512,swidth=2048,noquota)
    /dev/mapper/VG_node1_DATA_QAS-LV_node1_DATA_QAS on /hana/data/QAS/mnt00001 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,sunit=512,swidth=4096,noquota)

    qasadm@node2:~> mount | grep QAS/mnt
    /dev/mapper/VG_node2_LOG_QAS-LV_node2_LOG_QAS on /hana/log/QAS/mnt00002 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,sunit=512,swidth=2048,noquota)
    /dev/mapper/VG_node2_DATA_QAS-LV_node2_DATA_QAS on /hana/data/QAS/mnt00002 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,sunit=512,swidth=4096,noquota)

    qasadm@node3:~> mount | grep QAS/mnt
    /dev/mapper/VG_node3_LOG_QAS-LV_node3_LOG_QAS on /hana/log/QAS/mnt00003 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,sunit=512,swidth=2048,noquota)
    /dev/mapper/VG_node3_DATA_QAS-LV_node3_DATA_QAS on /hana/data/QAS/mnt00003 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,sunit=512,swidth=4096,noquota)

    qasadm@node4:~> mount | grep QAS/mnt
    /dev/mapper/VG_node4_LOG_QAS-LV_node4_LOG_QAS on /hana/log/QAS/mnt00004 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,sunit=512,swidth=2048,noquota)
    /dev/mapper/VG_node4_DATA_QAS-LV_node4_DATA_QAS on /hana/data/QAS/mnt00004 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,sunit=512,swidth=4096,noquota)


    FCtool reports an error because the mountpoint isn't specifically /hana/data/QAS.
    fctool --test LVM --sid QAS
    FCTSTART Version: 4.3.5 Start time: 2021.11.15 12:57:41
    FCT1104I Log file: /var/log/FCtool/fctool.2021.11.15-12:57:41.QAS.test.log
    FCT3600I Starting LVM
    FCT6121E /hana/data/QAS not mounted on host:node1
    FCT6122I Found these devices for MP /hana/data: /dev/mapper/VG_node1_LOG_QAS-LV_node1_LOG_QAS on /hana/log/QAS/mnt00001, /dev/mapper/VG_node1_DATA_QAS-LV_node1_DATA_QAS on /hana/data/QAS/mnt00001
    FCT3634E Error: LVM


    Could you advise if it's actually possible to use FCtool in our use case please?

    Best Regards,
    Pavel

    ------------------------------
    Pavel Ježík
    ------------------------------


  • 2.  RE: FCtool usage with HANA storage client

    Posted Tue November 16, 2021 03:18 AM
    Hi Pavel, please be so kind and share / post the fctool ini file, the HANA section. Thanks Markus

    ------------------------------
    Markus Fehling
    ------------------------------

    Original Message


  • 3.  RE: FCtool usage with HANA storage client

    Posted Thu November 18, 2021 11:24 AM
    Hello Markus,

    I updated fctool.ini as per your recommendation in DM:

    GLOBAL.INI = DEFAULT
    is only valid for scale up, you need to specify full path to the proper global.ini file

    HOST
    You need to specify ALL hosts, include spare / stand-by hosts (if available)

    Thank you for your quick help.

    Best Regards,
    Pavel

    ------------------------------
    Pavel Ježík
    ------------------------------

    Original Message