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<p><font size="2" face="sans-serif">Hi,</font><br>
<font size="2" face="sans-serif">The data and metadata replications are 2 on both source and destination filesystems, so from:</font><br>
<br>
<tt><font size="2">$ mmrepquota -j srcfilesys | grep fileset<br>
srcfileset FILESET 800 800 800 0 none | 863 0 0 <br>
0 none<br>
<br>
$ mmrepquota -j dstfilesys | grep fileset<br>
fileset root FILESET 457 400 400 0 none | 853 0 <br>
0 0 none</font></tt><br>
<br>
<font size="2" face="sans-serif">the quota data should be changed from 800G to 457G (or 400G to 228.5G), after "rsync -AHS".</font><br>
<br>
<br>
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<img width="16" height="16" src="cid:1__=0ABB0C7BDFDEFC748f9e8a93df938690@ibm.com" border="0" alt="Inactive hide details for Ulrich Sibiller ---06/02/2021 06:16:22 PM---On 6/1/21 6:08 PM, Kumaran Rajaram wrote: >>> If I'm not "><font size="2" color="#424282" face="sans-serif">Ulrich Sibiller ---06/02/2021 06:16:22 PM---On 6/1/21 6:08 PM, Kumaran Rajaram wrote: >>> If I'm not mistaken even with SS5 created filesystems,</font><br>
<br>
<font size="1" color="#5F5F5F" face="sans-serif">From: </font><font size="1" face="sans-serif">Ulrich Sibiller <u.sibiller@science-computing.de></font><br>
<font size="1" color="#5F5F5F" face="sans-serif">To: </font><font size="1" face="sans-serif">Kumaran Rajaram <krajaram@geocomputing.net>, gpfsug main discussion list <gpfsug-discuss@spectrumscale.org>, "gpfsug-discuss@gpfsug.org" <gpfsug-discuss@gpfsug.org></font><br>
<font size="1" color="#5F5F5F" face="sans-serif">Date: </font><font size="1" face="sans-serif">06/02/2021 06:16 PM</font><br>
<font size="1" color="#5F5F5F" face="sans-serif">Subject: </font><font size="1" face="sans-serif">[EXTERNAL] Re: [gpfsug-discuss] du --apparent-size and quota</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 width="100%" size="2" align="left" noshade style="color:#8091A5; "><br>
<br>
<br>
<tt><font size="2">On 6/1/21 6:08 PM, Kumaran Rajaram wrote:<br>
>>> If I'm not mistaken even with SS5 created filesystems, 1 MiB FS block size implies 32 kiB sub blocks (32 sub-blocks).<br>
> <br>
> Just to add: The /srcfilesys seemed to have been created with GPFS version 4.x which supports only 32 sub-blocks per block.<br>
> <br>
> -T /srcfilesys Default mount point<br>
> -V 16.00 (4.2.2.0) Current file system version<br>
> 14.10 (4.1.0.4) Original file system version<br>
> --create-time Tue Feb 3 11:46:10 2015 File system creation time<br>
> -B 1048576 Block size<br>
> -f 32768 Minimum fragment (subblock) size in bytes<br>
> --subblocks-per-full-block 32 Number of subblocks per full block<br>
> <br>
> <br>
> The /dstfilesys was created with GPFS version 5.x which support greater than 32 subblocks per block. /dstfilesys does have 512 subblocks-per-full-block with 8KiB subblock size since file-system blocksize is 4MiB.<br>
> <br>
> <br>
> -T /dstfilesys Default mount point<br>
> -V 23.00 (5.0.5.0) File system version<br>
> --create-time Tue May 11 16:51:27 2021 File system creation time<br>
> -B 4194304 Block size<br>
> -f 8192 Minimum fragment (subblock) size in bytes<br>
> --subblocks-per-full-block 512 Number of subblocks per full block<br>
> <br>
<br>
Well, from the higher flexibility in terms of the number of subblocks I'd expect a lower disk usage <br>
instead of a higher one. Is this a wrong assumption? From 400G to 457G it's a ~13% increase!<br>
<br>
> Beside the overhead, hard-links in the source FS (which, if I'm not mistaken, are not handled by "rsync" unless you specify "-H") and in some cases spare files can also explain the differences.<br>
<br>
My rsync is using -AHS, so this should not be relevant here.<br>
<br>
Uli<br>
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