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mkfs error: "existing superblock read failed: Inappropriate ioctl for de

To: xfs@xxxxxxxxxxx
Subject: mkfs error: "existing superblock read failed: Inappropriate ioctl for device"
From: Alexander Tsvetkov <alexander.tsvetkov@xxxxxxxxxx>
Date: Thu, 26 Mar 2015 16:27:50 +0300
Delivered-to: xfs@xxxxxxxxxxx
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0
Hello,

I have the following error message: "existing superblock read failed: Inappropriate ioctl for device" after attempt to make xfs image with "mkfs.xfs -f -m crc=1 -d file=1,name=xfs.fs,size=32m":

"meta-data=xfs.fs                 isize=256    agcount=2, agsize=4096 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=0        finobt=0
data     =                       bsize=4096   blocks=8192, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=0
log      =internal log           bsize=4096   blocks=853, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
existing superblock read failed: Inappropriate ioctl for device"

Filesystem is created and mounted as usually, xfs_repair passes, no messages in the system log. Configuration: Fedora 20 x86_64 on vbox, kernel 4.0.0-rc5, xfsprogs version 3.2.2.

Thanks,
Alexander Tsvetkov


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