<font size=2 face="sans-serif">Apparently, a small mistake in that developer
works post.<br>I always advise testing of new features on a scratchable system...</font><br><font size=2 face="sans-serif">Here's what I see on my test system:</font><br><br><font size=2 face="sans-serif">#mmcrfs mak -F /vds/mn.nsd -A no -T
/mak -B 16M -f 1K -i 1K</font><br><font size=2 face="sans-serif">Value '1024' for option '-f' is out
of range. Valid values are 4096 through 524288.</font><br><br><font size=2 face="sans-serif"># mmcrfs mak -F /vds/mn.nsd -A no -T
/mak -B 16M -f 4K -i 1K</font><br><font size=2 face="sans-serif">(runs okay)</font><br><font size=2 face="sans-serif"># mmlsfs mak</font><br><font size=2 face="sans-serif">flag
value
description</font><br><font size=2 face="sans-serif">------------------- ------------------------
-----------------------------------</font><br><font size=2 face="sans-serif"> -f
4096
Minimum fragment (subblock) size in bytes</font><br><font size=2 face="sans-serif"> -i
1024
Inode size in bytes</font><br><font size=2 face="sans-serif"> -I
32768
Indirect block size in bytes</font><br><font size=2 face="sans-serif"> ...</font><br><font size=2 face="sans-serif"> -B
16777216
Block size</font><br><font size=2 face="sans-serif"> ...</font><br><font size=2 face="sans-serif"> -V
18.00 (5.0.0.0)
File system version</font><br><font size=2 face="sans-serif"> ...</font><br><font size=2 face="sans-serif"> --subblocks-per-full-block 4096
Number of subblocks per full
block</font><br><font size=2 face="sans-serif"> ...<br></font><br><br><br><br><font size=1 color=#5f5f5f face="sans-serif">From:
</font><font size=1 face="sans-serif">valleru@cbio.mskcc.org</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">03/30/2018 12:21 PM</font><br><font size=1 color=#5f5f5f face="sans-serif">Subject:
</font><font size=1 face="sans-serif">[gpfsug-discuss]
sublocks per block in GPFS 5.0</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><font size=1 face="sans-serif">Hello Everyone, </font><br><br><font size=1 face="sans-serif">I am a little bit confused with the
number of sub-blocks per block-size of 16M in GPFS 5.0.</font><br><br><font size=1 face="sans-serif">In the below documentation, it mentions
that the number of sub-blocks per block is 16K, but "only for Spectrum
Scale RAID"</font><br><br><a href="https://developer.ibm.com/storage/2018/01/11/spectrum-scale-variant-sub-blocks/"><font size=1 color=blue face="sans-serif"><u>https://developer.ibm.com/storage/2018/01/11/spectrum-scale-variant-sub-blocks/</u></font></a><br><br><font size=1 face="sans-serif">However, when i created the filesystem
\u201cwithout\u201d spectrum scale RAID. I still see that the number of sub-blocks
per block is 1024.</font><br><br><font size=1 face="sans-serif">mmlsfs <filesystem> --subblocks-per-full-block</font><br><font size=1 face="sans-serif">flag
value
description</font><br><font size=1 face="sans-serif">------------------- ------------------------
-----------------------------------</font><br><font size=1 face="sans-serif"> --subblocks-per-full-block 1024
Number of subblocks per full
block</font><br><br><font size=1 face="sans-serif">So May i know if the sub-blocks per
block-size really 16K? or am i missing something?</font><br><font size=1 face="sans-serif"><br>Regards,<br>Lohit</font><tt><font size=2>_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org<br></font></tt><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=cvpnBBH0j41aQy0RPiG2xRL_M8mTc1izuQD3_PmtjZ8&m=HNrrMTazEN37eiIyxj9LWFMt2v1vCWeYuAGeHXXgIN8&s=Q6RUpDte4cePcCa_VU9ClyOvHMwhOWg8H1sRVLv9ocU&e="><tt><font size=2>https://urldefense.proofpoint.com/v2/url?u=http-3A__gpfsug.org_mailman_listinfo_gpfsug-2Ddiscuss&d=DwICAg&c=jf_iaSHvJObTbx-siA1ZOg&r=cvpnBBH0j41aQy0RPiG2xRL_M8mTc1izuQD3_PmtjZ8&m=HNrrMTazEN37eiIyxj9LWFMt2v1vCWeYuAGeHXXgIN8&s=Q6RUpDte4cePcCa_VU9ClyOvHMwhOWg8H1sRVLv9ocU&e=</font></tt></a><tt><font size=2><br></font></tt><br><br><BR>