Re: [PATCH][RFC] fast file mapping for loop

2008-01-10 Thread Bill Davidsen
. - It cannot be used with the loop encryption stuff. dm-crypt should be used instead, on top of loop (which, I think, is even the recommended way to do this today, so not a big deal). -- Bill Davidsen [EMAIL PROTECTED] We have more to fear from the bungling of the incompetent than from

Re: [RFH] Partition table recovery

2007-07-23 Thread Bill Davidsen
level extendeds). How can I politely say this code really needs comments? To quote the late R. W. Benway, If it was hard to write it should be hard to understand. (regarding code in FORTRAN II on punched cards, ca 1965) Rene. -- bill davidsen [EMAIL PROTECTED] CTO TMR Associates, Inc Doing

Re: [Patch 04/18] include/linux/logfs.h

2007-06-05 Thread Bill Davidsen
kernel, or that it should be added to gcc, but in some use like embedded applications where memory use is an important cost driver, people are probably doing it already by hand to pack struct arrays into minimal bytes. It's neither impossible nor totally useless. -- bill davidsen [EMAIL

Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.

2007-06-02 Thread Bill Davidsen
Jens Axboe wrote: On Fri, Jun 01 2007, Bill Davidsen wrote: Jens Axboe wrote: On Thu, May 31 2007, Bill Davidsen wrote: Jens Axboe wrote: On Thu, May 31 2007, David Chinner wrote: On Thu, May 31, 2007 at 08:26:45AM +0200, Jens Axboe wrote

Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.

2007-06-01 Thread Bill Davidsen
anything special about getting it onto the media. My impression is that the sync will return when the i/o has been delivered to the device, and will get special treatment by the elevator code (I looked quickly, more is needed). I'm sore someone will tell me if I misread this. ;-) -- bill

Re: [dm-devel] Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.

2007-06-01 Thread Bill Davidsen
. Battery backed cache doesn't prevect failures between the cache and the platter. -- bill davidsen [EMAIL PROTECTED] CTO TMR Associates, Inc Doing interesting things with small computers since 1979 - To unsubscribe from this list: send the line unsubscribe linux-fsdevel in the body of a message

Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.

2007-05-31 Thread Bill Davidsen
should come back from the physical i/o request. For 'iscsi', I guess it works just the same as SCSI... Hopefully. -- bill davidsen [EMAIL PROTECTED] CTO TMR Associates, Inc Doing interesting things with small computers since 1979 - To unsubscribe from this list: send the line unsubscribe linux

Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.

2007-05-31 Thread Bill Davidsen
proposed a project which uses one? :-( I think the goal is good, more choice is almost always better choice, I just want to be sure there won't be big disk performance regressions. -- bill davidsen [EMAIL PROTECTED] CTO TMR Associates, Inc Doing interesting things with small computers since

Re: Software raid0 will crash the file-system, when each disk is 5TB

2007-05-22 Thread Bill Davidsen
://vger.kernel.org/majordomo-info.html -- Bill Davidsen [EMAIL PROTECTED] We have more to fear from the bungling of the incompetent than from the machinations of the wicked. - from Slashdot - To unsubscribe from this list: send the line unsubscribe linux-fsdevel in the body of a message to [EMAIL

Re: [PATCH] LogFS take three

2007-05-19 Thread Bill Davidsen
hasn't been adapter for 'Boston legal' and 'Law and Order' like other high profile crimes. I see nothing wrong with jörnfs, and there's room for numbers at the end... -- Bill Davidsen [EMAIL PROTECTED] We have more to fear from the bungling of the incompetent than from the machinations

Re: [PATCH] LogFS take three

2007-05-19 Thread Bill Davidsen
workload where sequential write is dominant. I also expect that FTL for PC environment will have better quality spec than the disposable storage. The recent technology announcements from Intel are encouraging in that respect. -- Bill Davidsen [EMAIL PROTECTED] We have more to fear from

Re: Software raid0 will crash the file-system, when each disk is 5TB

2007-05-16 Thread Bill Davidsen
. Can you collect and post those. Both for the failing case (2*5.5T) and the working case (4*2.55T) is possible. -- bill davidsen [EMAIL PROTECTED] CTO TMR Associates, Inc Doing interesting things with small computers since 1979 - To unsubscribe from this list: send the line unsubscribe