From: Vyacheslav Dubeyko <slava-yeENwD64cLxBDgjK7y7TUQ@public.gmane.org>
To: Piotr Szymaniak <szarpaj-TbOm9Ca2r9GrDJvtcaxF/A@public.gmane.org>
Cc: linux-nilfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: Time issues with checkpoints resolved?
Date: Wed, 13 Feb 2013 10:24:17 +0400 [thread overview]
Message-ID: <1360736657.2140.13.camel@slavad-ubuntu> (raw)
In-Reply-To: <20130212092903.GD10316@wloczykij>
On Tue, 2013-02-12 at 10:29 +0100, Piotr Szymaniak wrote:
> On Wed, Jan 30, 2013 at 09:50:07AM +0400, Vyacheslav Dubeyko wrote:
> > Hi Piotr,
> >
> > On Tue, 2013-01-29 at 23:10 +0100, Piotr Szymaniak wrote:
> > > Hi,
> > >
> > > Sorry, but I can't find an answer and noticed some checkpoints in the
> > > past in the middle of other checkpoints (there was a thread, I think,
> > > about similar issue with timezone change).
> > >
> > > Right now I have (Raspberry Pi doesn't have RTC):
> > > ~ lscp
> > > (...)
> > > 7870 2013-01-27 15:12:30 cp - 22 42174
> > > 7871 2013-01-27 15:34:23 cp - 19 42174
> > > 7872 2013-01-27 15:42:29 cp - 22 42174
> > > 7873 1970-01-01 01:05:05 cp - 93 42176
> > > 7874 1970-01-01 01:10:05 cp - 22 42174
> > > 7875 1970-01-01 01:36:36 cp - 18 42174
> > > (...)
> > > 8031 1970-01-03 07:08:19 cp - 57 42183
> > > 8032 1970-01-03 07:13:20 cp - 36 42182
> > > 8033 2013-01-29 00:01:57 cp - 30 42182
> > > 8034 2013-01-29 00:19:34 cp - 599 42313
> > >
> > > I just wonder if cleaner is now smart enough to clean this mess.
> > >
> >
> > Unfortunately, it is not. Such fix doesn't made yet. I think that it
> > needs to modify nilfs-clean utility. But, currently, I am deeply inside
> > fixing of issues with flush kernel thread and bad btree node. These
> > issues are slightly complex. I tried several solutions but I haven't the
> > proper yet. Maybe, a final solution will be a combination of several
> > fixes that I tried.
> >
> > But fixing of issue with timezone change in my TODO list.
>
> Ok, can you (or someone else) refresh my memory what will hit me when cp
> 7872 will be cleaned? cleanerd will stop cleaning?
>
Segments for processing by GC are selected on the basis of importance
that defines by selection policy method. Currently, we have one method
that works on the basis of condition: sui_lastmod < ss_nongc_ctime. The
sui_lastmod is timestamp of the last modification. The ss_nongc_ctime is
creation time of the last segment not for GC.
With the best regards,
Vyacheslav Dubeyko.
>
> Piotr Szymaniak.
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prev parent reply other threads:[~2013-02-13 6:24 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-29 22:10 Time issues with checkpoints resolved? Piotr Szymaniak
2013-01-30 5:50 ` Vyacheslav Dubeyko
2013-02-12 9:29 ` Piotr Szymaniak
2013-02-13 6:24 ` Vyacheslav Dubeyko [this message]
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