as far as i have understood it is not freezing the file system but it is only freezing the write operation on block device had it been freezing the file system inode creation would also block On Wed, Dec 31, 2008 at 8:09 PM, rishi agrawal <postrishi@xxxxxxxxx> wrote: > I used a kernel module to freeze the file system using the function freeze_bdev > > but when i am try to use touch command on the file system i am able to > create the files. > > even read requests are served immediately > > only the write requests are being blocked > > until i call the thaw function > > can i have an explanation for this > > On Wed, Dec 31, 2008 at 6:11 PM, ajit mote <mail2blackmen@xxxxxxxxx> wrote: >> Hello, >> >>> I want to freeze a file system. I have seen a field in vfs superblock >>> s_frozen. >>> >>> But i am clue less about freezing the file system using that. >> >> >> freeze_bdev function ( fs/buffer.c) lock a filesystem and force it into a >> consistent state ... >> Above function use s_frozen flag to freez the file system ... >> >>> >>> >>> >>> -- >>> Regards, >>> Rishi B. Agrawal >>> >>> -- >>> To unsubscribe from this list: send an email with >>> "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx >>> Please read the FAQ at http://kernelnewbies.org/FAQ >>> >> >> >> >> -- >> Thanks & Regards, >> Ajit Subhash Mote >> >> > > > > -- > Regards, > Rishi B. Agrawal > -- Regards, Rishi B. Agrawal -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
