请问这个怎么解决？ chattr: Operation not supported while reading fla…

-bash-4.2#  lsattr /dev/sda
lsattr: Operation not supported While reading flags on /dev/sda

-bash-4.2# sudo  lsattr /dev/sda
lsattr: Operation not supported While reading flags on /dev/sda

-bash-4.2#  ls -l /dev/sda
b—–x— 1 root root 243,   5 Aug  7 06:00 /dev/sda

被设置过无法DD win

root@8-7-01:~# wget -O- http://down.80host.com/iso/dd/cn2003-virtio-pass-Linode.gz |gunzip|dd of=/dev/sda
–2019-08-07 06:22:07–  http://down.80host.com/iso/dd/cn2003-virtio-pass-Linode.gz
Resolving down.80host.com (down.80host.com)… dd: opening `/dev/sda’: Operation not permitted
107.151.170.218
Connecting to down.80host.com (down.80host.com)|107.151.170.218|:80… connected.
HTTP request sent, awaiting response… 200 OK
Length: 694457638 (662M) [application/x-gzip]
Saving to: `STDOUT’

0% [                                                                            ] 33,318      –.-K/s   in 0.01s   

Cannot write to `-‘ (Broken pipe).
root@8-7-01:~#

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