<font size=2 face="sans-serif">Hi</font><br><br><font size=2 face="sans-serif">Does you use NFSv4 acls in your old
cluster ?</font><br><font size=1 face="Arial"> </font><p><font size=2 face="Arial">Regards</font><p><font size=1 face="Arial"> </font><p><table width=780 style="border-collapse:collapse;"><tr height=8><td width=780 colspan=4 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><div align=center><hr noshade></div><p><font size=1 face="Arial"> </font><tr height=8><td width=780 colspan=4 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 face="Arial"> </font><tr height=8><td width=516 colspan=2 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=blue face="Arial"><b>Yaron
Daniel</b></font><td width=168 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial"> 94
Em Ha'Moshavot Rd</font><td width=96 rowspan=3 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><div align=right><img align=bottom src=cid:_1_09E5055809E4FFC4002269E8C2258052 style="border:0px solid;"></div><tr height=8><td width=516 colspan=2 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=blue face="Arial"><b>Server,
</b></font><a href="https://w3-03.ibm.com/services/isd/secure/client.wss/Somt?eventType=getHomePage&somtId=115"><font size=2 color=blue face="Arial"><b>Storage
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</b></font><td width=168 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial"> Petach
Tiqva, 49527</font><tr height=8><td width=516 colspan=2 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=blue face="Arial"><b>Global
Technology Services</b></font><td width=168 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial"> Israel</font><tr height=8><td width=90 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">Phone:</font><td width=426 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">+972-3-916-5672</font><td width=168 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial"> </font><td width=96 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2> </font><tr height=8><td width=90 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">Fax:</font><td width=426 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">+972-3-916-5672</font><td width=168 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">
</font><td width=96 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2> </font><tr height=8><td width=90 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">Mobile:</font><td width=426 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">+972-52-8395593</font><td width=168 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">
</font><td width=96 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2> </font><tr height=8><td width=90 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">e-mail:</font><td width=426 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">yard@il.ibm.com</font><td width=168 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">
</font><td width=96 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2> </font><tr height=8><td width=516 colspan=2 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><a href=http://www.ibm.com/il/he/><font size=2 color=blue face="Arial"><u>IBM
Israel</u></font></a><td width=168 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2 color=#5f5f5f face="Arial">
</font><td width=96 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=2> </font><tr height=8><td width=780 colspan=4 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#5f5f5f face="Arial"> </font><tr height=8><td width=780 colspan=4 style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;"><font size=1 color=#5f5f5f face="Arial"> </font></table><br><p><font size=3> </font><br><br><br><br><font size=1 color=#5f5f5f face="sans-serif">From:
</font><font size=1 face="sans-serif">Peter Childs <p.childs@qmul.ac.uk></font><br><font size=1 color=#5f5f5f face="sans-serif">To:
</font><font size=1 face="sans-serif">gpfsug main discussion
list <gpfsug-discuss@spectrumscale.org></font><br><font size=1 color=#5f5f5f face="sans-serif">Date:
</font><font size=1 face="sans-serif">10/19/2016 05:34 PM</font><br><font size=1 color=#5f5f5f face="sans-serif">Subject:
</font><font size=1 face="sans-serif">[gpfsug-discuss]
Using AFM to migrate files.</font><br><font size=1 color=#5f5f5f face="sans-serif">Sent by:
</font><font size=1 face="sans-serif">gpfsug-discuss-bounces@spectrumscale.org</font><br><hr noshade><br><br><br><tt><font size=2><br>We are planning to use AFM to migrate our old GPFS file store to a new
GPFS file store. This will give us the advantages of Spectrum Scale (GPFS)
4.2, such as larger block and inode size. I would like to attempt to gain
some insight on my plans before I start.<br><br>The old file store was running GPFS 3.5 with 512 byte inodes and 1MB block
size. We have now upgraded it to 4.1 and are working towards 4.2 with 300TB
of files. (385TB max space) this is so we can use both the old and new
storage via multi-cluster.<br><br>We are moving to a new GPFS cluster so we can use the new protocol nodes
eventually and also put the new storage machines as cluster managers, as
this should be faster and future proof<br><br>The new hardware has 1PB of space running GPFS 4.2<br><br>We have multiple filesets, and would like to maintain our namespace as
far as possible.<br><br>My plan was to.<br><br>1. Create a read-only (RO) AFM cache on the new storage (ro)<br>2a. Move old fileset and replace with SymLink to new.<br>2b. Convert RO AFM to Local Update (LU) AFM pointing to new parking area
of old files.<br>2c. move user access to new location in cache.<br>3. Flush everything into cache and disconnect.<br><br>I've read the docs including the ones on migration but it's not clear if
it's safe to move the home of a cache and update the target. It looks like
it should be possible and my tests say it works.<br><br>An alternative plan is to use a Independent Writer (IW) AFM Cache to move
the home directories which are pointed to by LDAP. Hence we can move users
one at a time and only have to drain the HPC cluster at the end to disconnect
the cache. I assume that migrating users over an Independent Writer is
safe so long as the users don't use both sides of the cache at once (ie
home and target)<br><br>I'm also interested in any recipe people have on GPFS policies to preseed
and flush the cache.<br><br>We plan to do all the migration using AFM over GPFS we're not currently
using NFS and have no plans to start. I believe using GPFS is the faster
method to preform the migration.<br><br>Any suggestions and experience of doing similar migration jobs would be
helpful.<br><br>Peter Childs<br>Research Storage<br>ITS Research and Teaching Support<br>Queen Mary, University of London<br><br>_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org<br></font></tt><a href="http://gpfsug.org/mailman/listinfo/gpfsug-discuss"><tt><font size=2>http://gpfsug.org/mailman/listinfo/gpfsug-discuss</font></tt></a><tt><font size=2><br><br></font></tt><br><br><BR>