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simple log-structured filesystem implementation for xv6

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.gitignore
.gitignore
 
 
Makefile
Makefile
 
 
README
README
 
 
README.xv6
README.xv6
 
 
asm.h
asm.h
 
 
bio.c
bio.c
 
 
bootasm.S
bootasm.S
 
 
bootmain.c
bootmain.c
 
 
bootother.S
bootother.S
 
 
cat.c
cat.c
 
 
console.c
console.c
 
 
data.S
data.S
 
 
defs.h
defs.h
 
 
dot-bochsrc
dot-bochsrc
 
 
echo.c
echo.c
 
 
elf.h
elf.h
 
 
exec.c
exec.c
 
 
fcntl.h
fcntl.h
 
 
file.c
file.c
 
 
file.h
file.h
 
 
forktest.c
forktest.c
 
 
fs.c
fs.c
 
 
fs.h
fs.h
 
 
gdbutil
gdbutil
 
 
grep.c
grep.c
 
 
ide.c
ide.c
 
 
init.c
init.c
 
 
initcode.S
initcode.S
 
 
ioapic.c
ioapic.c
 
 
kalloc.c
kalloc.c
 
 
kbd.c
kbd.c
 
 
kbd.h
kbd.h
 
 
kill.c
kill.c
 
 
lapic.c
lapic.c
 
 
lfstest.c
lfstest.c
 
 
ln.c
ln.c
 
 
ls.c
ls.c
 
 
main.c
main.c
 
 
mkdir.c
mkdir.c
 
 
mkfs.c
mkfs.c
 
 
mmu.h
mmu.h
 
 
mp.c
mp.c
 
 
mp.h
mp.h
 
 
multiboot.S
multiboot.S
 
 
param.h
param.h
 
 
picirq.c
picirq.c
 
 
pipe.c
pipe.c
 
 
pr.pl
pr.pl
 
 
printf.c
printf.c
 
 
proc.c
proc.c
 
 
proc.h
proc.h
 
 
rm.c
rm.c
 
 
runoff
runoff
 
 
runoff.list
runoff.list
 
 
runoff.spec
runoff.spec
 
 
runoff1
runoff1
 
 
sh.c
sh.c
 
 
sign.pl
sign.pl
 
 
spinlock.c
spinlock.c
 
 
spinlock.h
spinlock.h
 
 
stat.h
stat.h
 
 
stressfs.c
stressfs.c
 
 
string.c
string.c
 
 
swtch.S
swtch.S
 
 
syscall.c
syscall.c
 
 
syscall.h
syscall.h
 
 
sysfile.c
sysfile.c
 
 
sysproc.c
sysproc.c
 
 
test10mb
test10mb
 
 
timer.c
timer.c
 
 
toc.ftr
toc.ftr
 
 
toc.hdr
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trap.c
trap.c
 
 
trapasm.S
trapasm.S
 
 
traps.h
traps.h
 
 
types.h
types.h
 
 
uart.c
uart.c
 
 
ulib.c
ulib.c
 
 
umalloc.c
umalloc.c
 
 
user.h
user.h
 
 
usertests.c
usertests.c
 
 
usys.S
usys.S
 
 
vectors.pl
vectors.pl
 
 
vm.c
vm.c
 
 
wc.c
wc.c
 
 
x86.h
x86.h
 
 
zombie.c
zombie.c
 
 

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An implementation of a log-structured filesystem into xv6.
Jon Morton, 2011.

current limitations:
        - only one inode per block. this greatly simplifies the imap.
        - the imap can only be one block long.
        - writing to inodes cannot extend into indirect levels.

implementation order, as time allows:
        [x] mkfs
        [x] read-only lfs
        [x] segment writing
        [ ] segment cleaning

(original xv6 readme is in README.xv6)

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