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List: lustre-discuss
Subject: Re: [lustre-discuss] lfs migrate of hard links
From: Scott Wood <woodystrash () hotmail ! com>
Date: 2019-05-29 0:01:05
Message-ID: SLXP216MB0846EFE6867D99B4E4D2D1DEAA1F0 () SLXP216MB0846 ! KORP216 ! PROD ! OUTLOOK ! COM
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Thanks, Andreas,
Tested. Working. Happy. My cluster users thank you for saving us from an=
outage.
Cheers!
Scott
________________________________
From: Andreas Dilger <adilger@whamcloud.com>
Sent: Tuesday, 28 May 2019 2:28 PM
To: Scott Wood
Cc: lustre-discuss@lists.lustre.org
Subject: Re: [lustre-discuss] lfs migrate of hard links
You may be able to just copy the lfs_migrate script from a 2.12.x client, I=
don't think it has any dependencies on kernel or lfs features in the 2.12 =
release.
I would of course recommend that you test it is working properly on some te=
st hard-linked files before running it on the whole filesystem.
On May 27, 2019, at 19:02, Scott Wood <woodystrash@hotmail.com> wrote:
>
> Hi folks,
>
> I am in the process of draining a dozen OSTs in a 2.10.3 environment (all=
servers and clients) for replacement and it turns out they have many files=
with multiple hard links to them. We can't leave these files behind, as w=
e need to replace the OSTs, but we can't let them " be split into multiple =
separate files" by lfs_migrate as that would break things.
>
> From my reading of the changelogs and the new lfs_migrate script, it seem=
s that these are now handled more elegantly. If I were to upgrade the lust=
re client to 2.12.1 on a dozen clients, would the new client side lfs_migra=
te in 2.12.1 work with 2.10.3 servers, or will I need a system wide outage =
to upgrade all clients and servers?
>
> Cheers!
> Scott
Cheers, Andreas
--
Andreas Dilger
Principal Lustre Architect
Whamcloud
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<div style="font-family: Calibri, Helvetica, sans-serif; font-size: 12pt; color: \
rgb(0, 0, 0);"> <div style="margin: 0px; font-size: 12pt; font-family: Calibri, \
Helvetica, sans-serif"> Thanks, Andreas,</div>
<div style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, \
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</div>
<div style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, \
sans-serif"> Tested. Working. Happy. My cluster users thank you for \
saving us from an outage.</div> <div style="margin: 0px; font-size: 12pt; \
font-family: Calibri, Helvetica, sans-serif"> <br>
</div>
<div style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, \
sans-serif"> Cheers!</div>
<div style="margin: 0px; font-size: 12pt; font-family: Calibri, Helvetica, \
sans-serif"> Scott</div>
<br>
</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" \
style="font-size:11pt" color="#000000"><b>From:</b> Andreas Dilger \
<adilger@whamcloud.com><br> <b>Sent:</b> Tuesday, 28 May 2019 2:28 PM<br>
<b>To:</b> Scott Wood<br>
<b>Cc:</b> lustre-discuss@lists.lustre.org<br>
<b>Subject:</b> Re: [lustre-discuss] lfs migrate of hard links</font>
<div> </div>
</div>
<div class="BodyFragment"><font size="2"><span style="font-size:11pt;">
<div class="PlainText">You may be able to just copy the lfs_migrate script from a \
2.12.x client, I don't think it has any dependencies on kernel or lfs features in the \
2.12 release.<br> <br>
I would of course recommend that you test it is working properly on some test \
hard-linked files before running it on the whole filesystem.<br> <br>
On May 27, 2019, at 19:02, Scott Wood <woodystrash@hotmail.com> wrote:<br>
> <br>
> Hi folks,<br>
> <br>
> I am in the process of draining a dozen OSTs in a 2.10.3 environment (all \
servers and clients) for replacement and it turns out they have many files with \
multiple hard links to them. We can't leave these files behind, as we need to \
replace the OSTs, but we can't let them " be split into multiple separate \
files" by lfs_migrate as that would break things.<br> > <br>
> From my reading of the changelogs and the new lfs_migrate script, it seems that \
these are now handled more elegantly. If I were to upgrade the lustre client to \
2.12.1 on a dozen clients, would the new client side lfs_migrate in 2.12.1 work with \
2.10.3 servers, or will I need a system wide outage to upgrade all clients and \
servers?<br> > <br>
> Cheers!<br>
> Scott<br>
<br>
Cheers, Andreas<br>
--<br>
Andreas Dilger<br>
Principal Lustre Architect<br>
Whamcloud<br>
<br>
</div>
</span></font></div>
</body>
</html>
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