A serious problem of mds I think.
Anyone to fix it?
Regards.
On Thu, Sep 14, 2017 at 19:55 Micha Krause <mi...@krausam.de> wrote:
> Hi,
>
> looking at the code, and running with debug mds = 10 it looks like I have
> an inode with negative link count.
>
> -2> 2017-09-14 13:28:39.249399 7f3919616700 10 mds.0.cache.strays
> eval_stray [dentry #100/stray7/100007aa2f6 [2,head] auth (dversion lock)
> pv=0 v=23058565 inode=0x7f394b7e0730 0x7f3945a96270]
> -1> 2017-09-14 13:28:39.249445 7f3919616700 10 mds.0.cache.strays
> inode is [inode 100007aa2f6 [2,head] ~mds0/stray7/100007aa2f6 auth
> v23057120 s=4476488 nl=-1 n(v0 b4476488 1=1+0) (iversion lock) 0x7f394b7e
>
> I guess "nl" stands for number of links.
>
> The code in StrayManager.cc checks for:
>
> if (in->inode.nlink == 0) { ... }
> else {
> eval_remote_stray(dn, NULL);
> }
>
> void StrayManager::eval_remote_stray(CDentry *stray_dn, CDentry *remote_dn)
> {
> ...
> assert(stray_in->inode.nlink >= 1);
> ...
> }
>
> So if my link count is indeed -1 ceph will die here.
>
>
> The question is: how can I get rid of this inode?
>
>
> Micha Krause
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