Date: Thu, 20 Mar 2014 09:13:14 -0500 From: Karl Denninger <karl@denninger.net> To: freebsd-stable@freebsd.org Subject: Can ZFS boot from other than the root of a pool? Message-ID: <532AF77A.9010204@denninger.net>
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[-- Attachment #1 --] For a number of reasons having to do with backup strategy I want to mount a ZFS root from "poolname/root" instead just "poolname." That works ok; I can set in /boot/loader.conf: vfs.root.mountfrom="zfs:zroot/root" But -- I cannot actually boot from there. Unless the /boot directory is in zfs:/zroot the system cannot find it, and I see no obvious way to "teach" the loader that I want it to look in the filesystem under the top level. This isn't a terrible pain as I can simply mount zroot on /mnt and then copy zroot/root/boot over to zroot/boot whenever I make changes to the kernel or boot environment (which is infrequent) but I'm wondering if I'm missing something that would make booting directly from the filesystem where root is specified to be possible. (Obviously until the loader.conf file is found the system doesn't know where root is either, so this does look at first blush to be a "chicken and egg" problem.) -- -- Karl karl@denninger.net [-- Attachment #2 --] 0 *H 01 0 + 0 *H O0K030 *H 01 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1/0- *H customer-service@cudasystems.net0 130824190344Z 180823190344Z0[1 0 UUS10UFlorida10UKarl Denninger1!0 *H karl@denninger.net0"0 *H 0 bi՞] MNԿawx?`)'ҴcWgR@BlWh+ u}ApdCF JVй~FOL }EW^bچYp3K& ׂ(R lxڝ.xz?6 &nsJ +1v9 v/( kqĪp[vjcK%fϻe?iq]z lyzFO'ppdX//Lw(3 JI A*S#՟H[f|CGqJKoo y.oEuOw$ /섀$삻J9b|A P~8]D1YI<"""Y^T2iQ2 b yH)] Ƶ0y$ _N 6XqMC 9 XgώjGTP"#nˋ"Bk1 00 U 0 0 `HB0 U 0, `HB OpenSSL Generated Certificate0 U |8 ˴d[20 U #0]Af4 U3x&^"408 `HB+)https://cudasystems.net:11443/revoked.crl0 *H gBwH] j\x`( &gW32"Uf^. ^Iϱ k!DQA g{(w /)\N'[ oRW @C HO>)XrTNɘ!u`xt5(=f\-l3<@C6mnhv##1ŃbH͍_Nq aʷ?rk$^9TIa!kh,D -ct1 0001 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1/0- *H customer-service@cudasystems.net0 + ;0 *H 1 *H 0 *H 1 140320141314Z0# *H 1y9 ݭq^l@ 0l *H 1_0]0 `He*0 `He0 *H 0*H 0 *H @0+0 *H (0 +71001 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1/0- *H customer-service@cudasystems.net0 *H 101 0 UUS10UFlorida10U Niceville10U Cuda Systems LLC1 0UCuda Systems LLC CA1/0- *H customer-service@cudasystems.net0 *H L$äCD߶ 2{/>Ȇ9+JH թ!1% ~{DOFϪڔS ya)\zQ|w 65.炊Dcꏚ-U{y# ꤭؏Z'L7}LB!yX i&R_QG1w2 b۵ ե&VRH?Zh%Q3 KE li&0'uceE-]{ ˺ d# P֒|Gfi6 Ԅ=WMv&{uoԘfxx6t s{i,o"ÞaV@+$l6x`ܺ7ۈ}~P\FZw}?B y^q?鎎yA:BJԬ' 2v;f(5 1 ߕݒK$ K0\;+*{YT;3|G JƂDzP9d
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