ajit jain wrote: > Hi Andrew, > > I am writing a filtering device which tracks the write to the > file-system. I am doing it for ufs, vxfs and for zfs. Sometime for > consistent point I need to freeze the file-system which flushes dirty > block to the disk and block every IO on the top level. So, for ufs and > vxfs I got lockfs and VX_FREEZE/VX_THAW, but with zfs I didn't get the > luck. >
I see no need to freeze the file system, or maybe I would say, I see no benefit to freezing a file system. Perhaps your needs will be met by the snapshot feature which will also cause a sync(2). -- richard > Thanks for your response. > > Best regards, > ajit > > On Tue, Jan 27, 2009 at 5:34 PM, Andrew Gabriel > <agabr...@opensolaris.org> wrote: > >> ajit jain wrote: >> >>> Hi All, >>> >>> Can we freeze and thaw a zfs file-system either from user land (lockfs >>> for ufs) or from the kernel space or through ioctl? >>> >>> >> Can you step back a level and explain what you're trying to achieve? >> >> Freezing UFS is to get round ufs-specific issues which don't apply to ZFS, >> so you maybe asking the wrong question. >> >> -- >> Andrew >> >> > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
