Re: uncorrectable errors in Raid 10

> On Sun, Nov 19, 2017 at 12:31 PM, Steffen Sindzinski > wrote: > >> [57830.611730] BTRFS warning (device sdc2): checksum/header error at logical >> 17478699876352 on dev /dev/sdd2, sector 338986176: metadata leaf (level 0) >> in tree 318 >> [57830.611732] BTRFS warning (device sdc2): checksum/h

Re: Unrecoverable scrub errors

I guess not using RAID-0 would be a good start… Vennlig hilsen roy -- Roy Sigurd Karlsbakk (+47) 98013356 http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- Hið góða skaltu í stein höggva, hið illa í snjó rita. - Original Message - > F

Re: Tiered storage?

le, but I've worked with ZFS a while, and haven't seen those issues there. Vennlig hilsen roy -- Roy Sigurd Karlsbakk (+47) 98013356 http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- Hið góða skaltu í stein höggva, hið illa í snjó rita. -- To

Tiered storage?

of the hot data on the fast storage). And btw, how far is raid[56] and block-level dedup from something useful in production? Vennlig hilsen roy -- Roy Sigurd Karlsbakk (+47) 98013356 http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- Hið góða skal

RAID-[56]?

d etc… -- Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 r...@karlsbakk.net http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for

Re: [GIT PULL] Btrfs updates

> [ sorry, resend. My lbdb autocompleted with an extra r in kernel.org ] > > Hi everyone, > > My for-linus branch has a big set of fixes and features: Does this include raid-[56]? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 r...@kar

btrfs wishlist

roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med fremmed opprinnelse. I de fleste

raid5 - again

hi It's been some two years since I read about the becoming of raid5 etc in btrfs. Since the code is available in linux, why isn't this already in btrfs? Is Oracle holding back? -- Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbak

Re: Question of stability

is only stable as in ext4, well, why not just use ext4? The whole reason for btrfs to exist is to bring something new into the Linux world, and if those features aren't stable, then btrfs isn't. It's as simple as that. Would you buy a Subaru (or something) 4wd with a 2wd workin

Re: Question of stability

- Original Message - > On Sat, Sep 18, 2010 at 11:37 PM, Roy Sigurd Karlsbakk > wrote: > > Hi all > > > > I've been on this list for a year or so, and I have been following > > progress for some more. Are there any chances of btrfs >stabilizing, >

Question of stability

r ago, but still I can't see anything in the open. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle p

Re: remote mirroring in the works?

Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer med

Re: remote mirroring in the works?

et the snap's on "the other side" the same. Perhaps DRBD - see http://www.drbd.org/ - that'll mirror the block device(s) on which btrfs resides. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all

Re: 2.6.36-rc1 btrfs still unstable

production is like playing Russian roulette - it might work and can be benifitable, but then, there's another side of the coin... Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt a

Re: 2.6.36-rc1 btrfs still unstable

ZFS, you can use all sorts of crap and still live with it. Btrfs should follow that track. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. D

Re: Poor performance (1/4 that of XFS) when appending to lots of files

ch message consists of a > primary key (an integer in the range of 0 to 1,000,000) and a random > number of arbitrary data bytes (length in the range from 10 to 1000 > byte). > Can you share the code for this benchmark, please? Vennlige hilsener / Best regards roy -- Roy Sigurd Ka

RAID[56] status?

Hi all It's about a year now since I saw the first posts about RAID[56] in Btrfs. Has this gotten any further? Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presen

raild[56] again

Hi all Is raid[56] coming to btrfs? There was some talk about it a year back or so, but I haven't seen anything yet Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presen

Re: Updating RAID[56] support

- "David Woodhouse" skrev: > I've been looking again at the RAID5/RAID6 support, and updated the > tree > at git://git.infradead.org/users/dwmw2/btrfs-raid56.git#merged > > At the moment, we limit writes to a single disk's worth at a time, > which > means we _always_ do the read-calculatepar

Btrfs features/stabilisation timeline?

* in ZFS, scrubbing takes up a very high amount of I/O, significantly reducing disk performance for the zpool (at least this is the case for 2009.06 and Solaris 10). Will there be done efforts to help avoding this with Btrfs? Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r..

Re: RAID[56] with arbitrary numbers of "parity" stripes.

and perhaps "Factor out RAID6 algorithms into lib/". Seems something is in the works. By the way - how does FUSE ZFS work? Is it stable? Good performance? We're using ZFS natively on Solaris 10 now, perhaps moving the storage to opensolaris soon. roy -- Roy Sigurd Kar

Re: RAID[56] status

tel Corporation -- To unsubscribe from this list: send the line "unsubscribe linux- btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.ka

Re: snapshot-removal - timeline ?

lt parts of the dentry cache to do it right. So, it definitely isn't easy. I'd say it's a pretty elemetary feature to be able to remove something you have created. I know, you can remove the files and so on, but still, having a bunch of old and empty snapshots lying around is

Re: snapshot-removal - timeline ?

On 3. aug.. 2009, at 18.18, Chris Mason wrote: On Mon, Aug 03, 2009 at 04:33:13PM +0200, Roy Sigurd Karlsbakk wrote: On 3. aug.. 2009, at 15.04, Chris Mason wrote: On Sat, Aug 01, 2009 at 02:03:37PM +0200, Roland wrote: Hello, is there a timeline for snapshot-removal ? i did intensively

Re: snapshot-removal - timeline ?

have this in 2.6.32 Last I heard, someone was saying .31... Is it being moved? -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å

Snapshot removal++?

Hi Is snapshot removal possible yet? Also, is there any grub support yet? I'd be nice to be able to boot off a btrfs mirror roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intellig

Re: [PATCH] Add supported kernel version check to mkfs.btrfs

; min_medium ) + return( -1 ); + if ( kern_minor < min_minor ) + return( -1 ); + + return( 0 ); Why not simply this? if (kern_major < min_major || kern_medium < min_medium || kern_minor < min_minor) return -1; return 0; -- Roy Sigurd Ka

Re: Offtopic: Which SAS / SATA HBA do you recommend?

ses the same chipset in their opensolaris-based storage solution http://www.newegg.com/Product/Product.aspx?Item=N82E16815121009 roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt.

Re: raidz-like operation?

On 11. juli. 2009, at 16.59, David Woodhouse wrote: On Fri, 2009-07-10 at 10:58 +0200, Roy Sigurd Karlsbakk wrote: I know it's not in yet, but is there a plan to implement raid-z(2)- like operation? I have heard of plans to integrate with the existing md-subsystem in the kernel, but I&

raidz-like operation?

Hi I know it's not in yet, but is there a plan to implement raid-z(2)- like operation? I have heard of plans to integrate with the existing md-subsystem in the kernel, but I'm not sure if this will be appropriate comparing this to how things are done in zfs/raid-z. roy --

Re: Read errors while benchmarking

Currently, btrfs doesn't support using direct I/O for read. Is anyone working on this? It /is/ a rather basic feature, and testing with iozone would be nice. roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensie

Re: Using SSDs for caching?

On 18. juni. 2009, at 17.55, Tomasz Torcz wrote: On Thu, Jun 18, 2009 at 03:56:23PM +0200, Roy Sigurd Karlsbakk wrote: I have heard/read about systems from Sun and NetApp using SDs for caching. Sun uses different SDs for read and write caching (one being faster for reads and the other for

Re: Using SSDs for caching?

On 18. juni. 2009, at 15.56, Roy Sigurd Karlsbakk wrote: Hi all I have heard/read about systems from Sun and NetApp using SDs for caching. Sun uses different SDs for read and write caching (one being faster for reads and the other for writes). The storage solution from Sun is based on

Using SDs for caching?

design to know exactly how they do this, but can someone think of a way this could be implemented in btrfs? I would think such a cache level could speed up things rather well. Best regards roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all

Re: New experimental btrfs branch ready for testing

e.git newformat fatal: Not a git repository Have this code been removed, or is it me doing something funny? roy -- Roy Sigurd Karlsbakk (+47) 97542685 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært impe

Blocksizes and deduplication

btrfs out a bit. roy -- Roy Sigurd Karlsbakk (+47) 97542685 / 98013356 r...@karlsbakk.net http://blogg.karlsbakk.net/ -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av idiomer m