libpuffs.
With a round of applause to Antti Kantee for helping out with puffs
debugging, and a huge thank you to Greg Oster, who has fixed numerous
bugs over the last week (unfortunately, the bugs are all mine), and
provided enthusiasm and drive.
Right now, the initiator is fulling working for only a single target,
and should be considered to be in a state of flux. Having said that,
Greg completed a run of build.sh with the storage on the iSCSI target,
and found times to be within 0.5% of direct attached storage. Cache
effects apply.
The initiator should be portable to everything that uses the FUSE
interface. That's right - a portable iSCSI initiator.
Storage (LUNs exported by the target) is, at the present time,
presented as a regular file called "storage". This will likely
change in the future.
% priv obj/iscsifs -u agc inspiron1300 /mnt &
[1] 13158
inspiron1300.wherever.co.uk: 10.4.0.42:3260,1 iqn.1994-04.org.netbsd.iscsi-target:target0
inspiron1300.wherever.co.uk: 10.4.0.42:3260,1 iqn.1994-04.org.netbsd.iscsi-target:target1
% ls -al /mnt/inspiron1300.wherever.co.uk/target0/
total 576
drwxr-xr-x 2 agc agc 512 Nov 8 21:07 .
drwxr-xr-x 2 agc agc 512 Nov 8 21:07 ..
lrw-r--r-- 1 agc agc 44 Nov 8 21:07 hostname -> inspiron1300.wherever.co.uk
lrw-r--r-- 1 agc agc 9 Nov 8 21:07 ip -> 10.4.0.42
lrw-r--r-- 1 agc agc 16 Nov 8 21:07 product -> NetBSD iSCSI
-rw-r--r-- 1 agc agc 104857088 Nov 8 21:07 storage
lrw-r--r-- 1 agc agc 43 Nov 8 21:07 targetname -> iqn.1994-04.org.netbsd.iscsi-target:target0
lrw-r--r-- 1 agc agc 8 Nov 8 21:07 vendor -> NetBSD
lrw-r--r-- 1 agc agc 4 Nov 8 21:07 version -> 0
FFS needs a block device, and so vnconfig can be used to sit on top of
the regular file.
% mount -vv | grep iscsifs
/dev/puffs on /mnt type puffs|refuse:iscsifs (nosuid, nodev, fsid: 0xcb04/0x6acb, reads: sync 0 async 0, writes: sync 0 async 0)
% priv vnconfig vnd0 /mnt/inspiron1300.wherever.co.uk/target0/storage
% priv mount /dev/vnd0a /iscsi
% df
Filesystem 1K-blocks Used Avail %Cap Mounted on
/dev/dk0 28101396 21491182 5205146 80% /
kernfs 1 1 0 100% /kern
procfs 4 4 0 100% /proc
ptyfs 1 1 0 100% /dev/pts
/dev/puffs 0 0 0 100% /mnt
/dev/vnd0a 99214 8209 86045 8% /iscsi
% mount -vv | grep iscsi
/dev/puffs on /mnt type puffs|refuse:iscsifs (nosuid, nodev, fsid: 0xcb04/0x6acb, reads: sync 0 async 0, writes: sync 0 async 0)
/dev/vnd0a on /iscsi type ffs (local, fsid: 0xe00/0x78b, reads: sync 1 async 0, writes: sync 2 async 0)
43385f0ea1