anyone can help?
2014-07-31 23:55 GMT+07:00 debian Only <onlydebian at gmail.com>:
> Dear ,
>
> i have one test environment Ceph Firefly 0.80.4, on Debian 7.5 .
> i do not have enough SSD for each OSD.
> I want to test speed Ceph perfermance by put journal in a Ramdisk or
> tmpfs, but when to add new osd use separate disk for OSD data and journal
> ,it is failure.
>
> first , i have test Ram mount to a filesystem and made it to persistent.
> , i have tested it, it can recovery data from last archive when system
> boot.
> >>>>> ramdisk.sh >>>>
> #! /bin/sh
> ### BEGIN INIT INFO
> # Provides: Ramdisk
> # Required-Start: $remote_fs $syslog
> # Required-Stop: $remote_fs $syslog
> # Default-Start: 2 3 4 5
> # Default-Stop: 0 1 6
> # Short-Description: Ramdisk
> ### END INIT INFO
> # /etc/init.d/ramdisk.sh
> #
>
> case "$1" in
> start)
> echo "Copying files to ramdisk"
> cd /mnt
> mkfs.btrfs /dev/ram0 >> /var/log/ramdisk_sync.log
> mount /dev/ram0 /mnt/ramdisk/
> tar --lzop -xvf ramdisk-backup.tar.lzop >> /var/log/ramdisk_sync.log
> echo [`date +"%Y-%m-%d %H:%M"`] Ramdisk Synched from HD >>
> /var/log/ramdisk_s
> ync.log
> ;;
> sync)
> echo "Synching files from ramdisk to Harddisk"
> echo [`date +"%Y-%m-%d %H:%M"`] Ramdisk Synched to HD >>
> /var/log/ramdisk_syn
> c.log
> cd /mnt
> mv -f ramdisk-backup.tar.lzop ramdisk-backup-old.tar.lzop
> tar --lzop -cvf ramdisk-backup.tar.lzop ramdisk >>
> /var/log/ramdisk_sync.log
> ;;
> stop)
> echo "Synching logfiles from ramdisk to Harddisk"
> echo [`date +"%Y-%m-%d %H:%M"`] Ramdisk Synched to HD >>
> /var/log/ramdisk_syn
> c.log
> tar --lzop -cvf ramdisk-backup.tar.lzop ramdisk >>
> /var/log/ramdisk_sync.log
> ;;
> *)
> echo "Usage: /etc/init.d/ramdisk {start|stop|sync}"
> exit 1
> ;;
> esac
>
> exit 0
>
> #####
>
> then i want to add new OSD use ramdisk for journal.
>
> i have tried 3 ways. all failed.
> 1. ceph-deploy osd --zap-disk --fs-type btrfs create
> ceph04-vm:/dev/sdb:/dev/ram0 (use device way)
> 2. ceph-deploy osd prepare ceph04-vm:/mnt/osd:/mnt/ramdisk (use
> direcotry way)
> 3. ceph-deploy osd prepare ceph04-vm:/dev/sdb:/mnt/ramdisk
>
> could some expert give me some guide on it ???
>
> #### some log#####
> root at ceph-admin:~/my-cluster# ceph-deploy osd --zap-disk --fs-type btrfs
> create ceph04-vm:/dev/sdb:/dev/ram0
> [ceph_deploy.conf][DEBUG ] found configuration file at:
> /root/.cephdeploy.conf
> [ceph_deploy.cli][INFO ] Invoked (1.5.9): /usr/bin/ceph-deploy osd
> --zap-disk --fs-type btrfs create ceph04-vm:/dev/sdb:/dev/ram0
> [ceph_deploy.osd][DEBUG ] Preparing cluster ceph disks
> ceph04-vm:/dev/sdb:/dev/ram0
> [ceph04-vm][DEBUG ] connected to host: ceph04-vm
> [ceph04-vm][DEBUG ] detect platform information from remote host
> [ceph04-vm][DEBUG ] detect machine type
> [ceph_deploy.osd][INFO ] Distro info: debian 7.6 wheezy
> [ceph_deploy.osd][DEBUG ] Deploying osd to ceph04-vm
> [ceph04-vm][DEBUG ] write cluster configuration to /etc/ceph/{cluster}.conf
> [ceph04-vm][INFO ] Running command: udevadm trigger
> --subsystem-match=block --action=add
> [ceph_deploy.osd][DEBUG ] Preparing host ceph04-vm disk /dev/sdb journal
> /dev/ram0 activate True
> [ceph04-vm][INFO ] Running command: ceph-disk-prepare --zap-disk
> --fs-type btrfs --cluster ceph -- /dev/sdb /dev/ram0
> [ceph04-vm][DEBUG ]
> ****************************************************************************
> [ceph04-vm][DEBUG ] Caution: Found protective or hybrid MBR and corrupt
> GPT. Using GPT, but disk
> [ceph04-vm][DEBUG ] verification and recovery are STRONGLY recommended.
> [ceph04-vm][DEBUG ]
> ****************************************************************************
> [ceph04-vm][DEBUG ] GPT data structures destroyed! You may now partition
> the disk using fdisk or
> [ceph04-vm][DEBUG ] other utilities.
> [ceph04-vm][DEBUG ] The operation has completed successfully.
> [ceph04-vm][DEBUG ] Creating new GPT entries.
> [ceph04-vm][DEBUG ] Information: Moved requested sector from 34 to 2048 in
> [ceph04-vm][DEBUG ] order to align on 2048-sector boundaries.
> [ceph04-vm][WARNIN] Caution: invalid backup GPT header, but valid main
> header; regenerating
> [ceph04-vm][WARNIN] backup header from main header.
> [ceph04-vm][WARNIN]
> [ceph04-vm][WARNIN] WARNING:ceph-disk:OSD will not be hot-swappable if
> journal is not the same device as the osd data
> [ceph04-vm][WARNIN] Could not create partition 2 from 34 to 10485793
> [ceph04-vm][WARNIN] Unable to set partition 2's name to 'ceph journal'!
> [ceph04-vm][WARNIN] Could not change partition 2's type code to
> 45b0969e-9b03-4f30-b4c6-b4b80ceff106!
> [ceph04-vm][WARNIN] Error encountered; not saving changes.
> [ceph04-vm][WARNIN] ceph-disk: Error: Command '['/sbin/sgdisk',
> '--new=2:0:+5120M', '--change-name=2:ceph journal',
> '--partition-guid=2:ea326680-d389-460d-bef1-3c6bd0ab83c5',
> '--typecode=2:45b0969e-9b03-4f30-b4c6-b4b80ceff106', '--mbrtogpt', '--',
> '/dev/ram0']' returned non-zero exit status 4
> [ceph04-vm][ERROR ] RuntimeError: command returned non-zero exit status: 1
> [ceph_deploy.osd][ERROR ] Failed to execute command: ceph-disk-prepare
> --zap-disk --fs-type btrfs --cluster ceph -- /dev/sdb /dev/ram0
> [ceph_deploy][ERROR ] GenericError: Failed to create 1 OSDs
>
>
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