Re: [LSF/MM TOPIC] do we really need PG_error at all?

On Feb 27, 2017, at 8:07 AM, Jeff Layton wrote: > > On Mon, 2017-02-27 at 11:27 +1100, NeilBrown wrote: >> On Sun, Feb 26 2017, James Bottomley wrote: >> >>> On Mon, 2017-02-27 at 08:03 +1100, NeilBrown wrote: On Sun, Feb 26 2017, James Bottomley wrote: > [added linux-scsi and lin

Re: [LSF/MM TOPIC] status update on stream IDs

[resend to include other relevant lists] On Jan 6, 2017, at 4:54 PM, Andreas Dilger wrote: > > At LSF/MM'16 and Linux FAST (https://lwn.net/Articles/685499/) there were > discussions about adding stream IDs to the block/device layer to allow higher > layers (filesystems,

Re: [PATCH RFC 1/3] vfs: add copy_file_range syscall and vfs helper

On Apr 10, 2015, at 4:00 PM, Zach Brown wrote: > > Add a copy_file_range() system call for offloading copies between > regular files. > > This gives an interface to underlying layers of the storage stack which > can copy without reading and writing all the data. There are a few > candidates tha

Re: impact of 4k sector size on the IO & FS stack

how many transfers /ended/ on an odd sector, > thus determining how many RMW cycles the tail of an average I/O requires. I'd guess a vast majority of IO will have the end similarly misaligned as the start. Very little filesystem IO is 512 bytes, possibly excluding XFS in an unusual

Re: impact of 4k sector size on the IO & FS stack

le to use a copy of an ext3 filesystems with 1kB blocksize onto a 4kB sector size device - the ext3 code will detect this and refuse to mount. At that point you need to do a tar/untar (or whatever) to copy the data instead of a raw partition copy. Cheers, Andreas -- Andreas Dilger Principal Software

Re: end to end error recovery musings

node which is using this extent block. This allows online detection of corrupt index blocks, and also detection of an index block that is written to the wrong location. There is as yet no plan that I'm aware of to have in-filesystem checksums of the extent data. Cheers, Andreas -- Andreas

Re: end to end error recovery musings

RAID set can take the whole system offline. Apologies if this is already done in recent kernels... Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc. - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: Linux not adhering to BIOS Drive boot order?

ve renaming by 99%. It goes from "each time drives are added/moved/removed my system may be broken" to "if I insert two drives with the same label 50% chance my system is broken". I'll take the latter any day. Cheers, Andreas -- Andreas Dilger \ "If a man ate a poun