[lustre-discuss] Using lctl lfsck syntax issues

Andreas Dilger adilger at whamcloud.com
Thu Aug 9 20:02:36 PDT 2018


The lctl commands need to be run on the MDS. 

Cheers, Andreas

> On Aug 9, 2018, at 11:49, Ms. Megan Larko <dobsonunit at gmail.com> wrote:
> 
> Howdy List!
> 
> I am checking Lustre-2.10.4 (kernel 3.10.0-693 on CentOS 7.3.1611).
> I am having trouble using lctl lfsck.  I believe I am not using the proper syntax.  The manual page, "man 8 lctl-lfsck-start" (or query in place of start) is not providing me the info I seek (or rather I just am not 'getting' it).
> 
> All of my queries (shown below) have the same response.
> > lctl lfsck_query -t namespace --device meg1-MDT0000
> Fail to query LFSCK: Invalid argument
> > lctl lfsck_query --device meg1-MDT0000
> Fail to query LFSCK: Invalid argument
> > lctl lfsck_query -M meg1-MDT0000
> Fail....
> > lctl lfsck_query -M 4    # lctl dl shows MDT as device num. 4
> Fail ....
> 
> I am running this on the Lustre client.  The lctl command is from:
> > rpm -qf /usr/sbin/lctl
> lustre-2.10.4-1.el7.centos.x86_64
> 
> I would like to test the lsfck_query|start|stop function.
> 
> P.S.  Can an actual--non-dryrun--lfsck be run on a mounted active Lustre File System?
> 
> Cheers,
> megan
> 
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