Re: misleading ZFS warning
Ronald Klop <[email protected]> Wed, 22 Jul 2026 17:12:00 +0200 (CEST)
| Newsgroups | gmane.os.freebsd.devel.file-systems |
|---|---|
| Message-ID | <1285105837.191703.1784733120685@localhost> |
------=_Part_191702_2134671035.1784733120682 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit What is underlying pool structure? Zraid/mirror/single disk? If zraid, what is the stripesize? Regards, Ronald Van: Anthony Pankov <[email protected]> Datum: 22 juli 2026 11:51 Aan: [email protected] Onderwerp: misleading ZFS warning > > > Hello, > > Doing this: > > zfs create -b 4096 -o volmode=dev -V 32G as1/dockerim/dsk.adocker > > I've got > > Warning: volblocksize (4096) is less than the default minimum block size (16384). > To reduce wasted space a volblocksize of 16384 is recommended. > > While ashift=12 for this pool I can't understand am I really do something wrong and there will be "wasted space" or this is a misleading warning. > > Can somebody enlight this? > > -- > Best regards, > Anthony Pankov mailto:[email protected] > > > > > > ------=_Part_191702_2134671035.1784733120682 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit <html><head></head><body>What is underlying pool structure?<div>Zraid/mirror/single disk?</div><div><br></div><div>If zraid, what is the stripesize?</div><div><br></div><div>Regards,</div><div>Ronald</div><div><br></div><div><p><small><strong>Van:</strong> Anthony Pankov <[email protected]><br><strong>Datum:</strong> 22 juli 2026 11:51<br><strong>Aan:</strong> [email protected]<br><strong>Onderwerp:</strong> misleading ZFS warning<br></small></p><blockquote style="margin-left: 5px; border-left: 3px solid #ccc; margin-right: 0px; padding-left: 5px;"><div class="MessageRFC822Viewer do_not_remove" id="P"><!-- P --> <!-- processMimeMessage --><div class="TextPlainViewer do_not_remove" id="P.P"><!-- P.P -->Hello,<br> <br> Doing this:<br> <br> zfs create -b 4096 -o volmode=dev -V 32G as1/dockerim/dsk.adocker<br> <br> I've got<br> <br> Warning: volblocksize (4096) is less than the default minimum block size (16384).<br> To reduce wasted space a volblocksize of 16384 is recommended.<br> <br> While ashift=12 for this pool I can't understand am I really do something wrong and there will be "wasted space" or this is a misleading warning.<br> <br> Can somebody enlight this?<br> <br> -- <br> Best regards,<br> Anthony Pankov mailto:[email protected]<br> <br> <br> </div><!-- TextPlainViewer --> <hr> </div><!-- MessageRFC822Viewer --> </blockquote><br><br><br></div></body></html> ------=_Part_191702_2134671035.1784733120682--