dch / io-histogram.d

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1	#!/usr/sbin/dtrace -s
2	#pragma D option quiet
3	#pragma D option aggsize=20m
4
5	syscall::read:return,syscall::write:return
6	/execname == "firefox" /
7	{ @[probefunc] = quantize(arg1); }

dch / jail_set_iovec.md

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	/* clang-format off */
	struct iovec iov[] = {
		{ .iov_base = "path"         , .iov_len = sizeof("path")          },
		{ .iov_base = jail_path      , .iov_len = sizeof(jail_path)       },

		{ .iov_base = "name"         , .iov_len = sizeof("name")          },
		{ .iov_base = jail_name      , .iov_len = sizeof(jail_name)       },

dch / chelsio-100g.md

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overview

2 hosts, 100G Chelsio T62100-LP-CR NICs
direct cabled

straylight

# ifconfig cc0
cc0: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500

dch / jails-topics.md

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List of raised items in the jails 2.0 survey & spreadshet from ~ 2 years ago

Topics taken from our jails 2.0 spreadsheet for ranked choice voting:

5	have a userland jail daemon similar in concept to docker/podman daemon
7	teach jail(8) to export jail.conf params & vars as env vars into exec hooks
8	extend ucl support to more jail tools
9	allow user-managed rootless jails, similar to rootless podman on linux
11	kernel-managed state machines for jails, to allow operators to *know* what is blocking a jail from dying/restarting
12	teach ifconfig to auto-create epairs for vnet jails
13	associate mountpoints with jails, to allow better cleanup

dch / notes.md

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blah