> -----原始邮件-----
> 发件人: "Jason Dillaman" <jdill...@redhat.com>
> 发送时间: 2019-10-16 20:33:47 (星期三)
> 收件人: "展荣臻（信泰）" <zhanrzh...@teamsun.com.cn>
> 抄送: ceph-users <ceph-users@lists.ceph.com>
> 主题: Re: [ceph-users] ceph iscsi question
>
> On Wed, Oct 16, 2019 at 2:35 AM 展荣臻（信泰） <zhanrzh...@teamsun.com.cn> wrote:
> >
> > hi,all
> > we deploy ceph with ceph-ansible.osds,mons and daemons of iscsi runs in
> > docker.
> > I create iscsi target according to
> > https://docs.ceph.com/docs/luminous/rbd/iscsi-target-cli/.
> > I discovered and logined iscsi target on another host,as show below:
> >
> > [root@node1 tmp]# iscsiadm -m discovery -t sendtargets -p 192.168.42.110
> > 192.168.42.110:3260,1 iqn.2003-01.com.teamsun.iscsi-gw:iscsi-igw
> > 192.168.42.111:3260,2 iqn.2003-01.com.teamsun.iscsi-gw:iscsi-igw
> > [root@node1 tmp]# iscsiadm -m node -T
> > iqn.2003-01.com.teamsun.iscsi-gw:iscsi-igw -p 192.168.42.110 -l
> > Logging in to [iface: default, target:
> > iqn.2003-01.com.teamsun.iscsi-gw:iscsi-igw, portal: 192.168.42.110,3260]
> > (multiple)
> > Login to [iface: default, target:
> > iqn.2003-01.com.teamsun.iscsi-gw:iscsi-igw, portal: 192.168.42.110,3260]
> > successful.
> >
> > /dev/sde is mapped,when i mkfs.xfs -f /dev/sde, an Error occur,
> >
> > [root@node1 tmp]# mkfs.xfs -f /dev/sde
> > meta-data=/dev/sde isize=512 agcount=4, agsize=1966080 blks
> > = sectsz=512 attr=2, projid32bit=1
> > = crc=1 finobt=0, sparse=0
> > data = bsize=4096 blocks=7864320, imaxpct=25
> > = sunit=0 swidth=0 blks
> > naming =version 2 bsize=4096 ascii-ci=0 ftype=1
> > log =internal log bsize=4096 blocks=3840, version=2
> > = sectsz=512 sunit=0 blks, lazy-count=1
> > realtime =none extsz=4096 blocks=0, rtextents=0
> > existing superblock read failed: Input/output error
> > mkfs.xfs: pwrite64 failed: Input/output error
> >
> > message in /var/log/messages:
> > Oct 16 14:01:44 localhost kernel: Dev sde: unable to read RDB block 0
> > Oct 16 14:01:44 localhost kernel: sde: unable to read partition table
> > Oct 16 14:02:17 localhost kernel: Dev sde: unable to read RDB block 0
> > Oct 16 14:02:17 localhost kernel: sde: unable to read partition table
> >
> > we use Luminous ceph.
> > what cause this error? how debug it.any suggestion is appreciative.
>
> Please use the associated multipath device, not the raw block device.
>
hi,Jason
Thanks for your reply
The multipath device is the same error as raw block device.
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