Date: Thu, 11 Mar 2010 14:08:07 +0100 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Michiel Detailleur <md@scoutsengidsenvlaanderen.be> Cc: freebsd-fs@freebsd.org Subject: Re: [Spam? ] Re: ZFS snapshot name length limit? (File name too long) Message-ID: <20100311130807.GJ2350@garage.freebsd.pl> In-Reply-To: <4B98E95B.90806@scoutsengidsenvlaanderen.be> References: <4B97A963.9040300@scoutsengidsenvlaanderen.be> <20100310174411.GE1715@garage.freebsd.pl> <4B98E95B.90806@scoutsengidsenvlaanderen.be>
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--Ublo+h3cBgJ33ahC Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Mar 11, 2010 at 02:00:11PM +0100, Michiel Detailleur wrote: > >From looking at the code, I think you hitting this limit: > > > >This is FreeBSD limit caused by statfs structure: > > > >/* > > * filesystem statistics > > */ > >[...] > >#define MNAMELEN 88 /* size of on/from name bufs */ > >[...] > > > >ZFS mounts snapshots on lookup and this is this mount that fails. > > =20 > So all that would need to be done to allow mounting snapshots with=20 > longer names would be to increase this value? (I'm not a C programmer,=20 > so bear with me :) ) Such change will break ABI compatibility with tools compiled on previous FreeBSD versions. As you can see in sys/sys/mount.h this is the reason we still keep ostatfs structure. I'll discuss the possibilities with other FreeBSD committers and we will see what we can do about it. --=20 Pawel Jakub Dawidek http://www.wheelsystems.com pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --Ublo+h3cBgJ33ahC Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (FreeBSD) iEYEARECAAYFAkuY6zcACgkQForvXbEpPzTzCgCgpzZjbPw4RrG3VuSllVOzjzW9 J68AoKH4Lfqg2DZ06R4psYAb0ESuhXpE =ZnVM -----END PGP SIGNATURE----- --Ublo+h3cBgJ33ahC--
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