On Thu, Jun 22, 2006 at 06:19:20PM +0100, Darren J Moffat wrote:
> Bill Sommerfeld wrote:
> >On Thu, 2006-06-22 at 13:01, Roch wrote:
> >> Is there a sync command that targets individual FS ?
> >
> >Yes. lockfs -f
>
> Does lockfs work with ZFS ? The man page appears to indicate it is very
> UFS specific.
Well, it just ends up doing an ioctl(), which zfs recognizes:
# dtrace -n 'syscall::ioctl:entry/pid == $target/{self->on = 1}' \
-n'fbt:::/self->on/{}' -n 'syscall::ioctl:return/self->on/{self->on = 0}' \
-F -c 'lockfs -f /aux1'
dtrace: description 'syscall::ioctl:entry' matched 1 probe
dtrace: description 'fbt:::' matched 44321 probes
dtrace: description 'syscall::ioctl:return' matched 1 probe
dtrace: pid 151072 has exited
CPU FUNCTION
0 -> ioctl
0 -> getf
0 -> set_active_fd
0 <- set_active_fd
0 <- getf
0 -> get_udatamodel
0 <- get_udatamodel
0 -> fop_ioctl
0 -> zfs_ioctl
0 <- zfs_ioctl
0 -> zfs_sync
0 -> zil_commit
0 <- zil_commit
0 <- zfs_sync
0 <- fop_ioctl
0 -> releasef
0 -> clear_active_fd
0 <- clear_active_fd
0 -> cv_broadcast
0 <- cv_broadcast
0 <- releasef
0 <- ioctl
So the sync happens.
Cheers,
- jonathan
--
Jonathan Adams, Solaris Kernel Development
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