BTRFS deduplication

2011-05-11 Thread Swâmi Petaramesh
Hi again list, I've seen in a message dating back to january that offline deduplication has been implemented in BTRFS, but I can't find it in my btrfs-tools 0.19+20100601-3ubuntu2 Has it reached release, or not yet ? How could I give it a try ? I've seen a discussion about whether deduplication

BTRFS, encrypted LVM and disk write cache ?

2011-05-11 Thread Swâmi Petaramesh
Hi list, I'm a new BTRFS user and will try not to ask FAQs ;-) I'm currently using Btrfs v0.19 on stock Ubuntu Natty (kernel 2.6.38) and use a BTRFS inside an encrypted LVM. The wiki gotchas page https://btrfs.wiki.kernel.org/index.php/Gotchas states : « btrfs volumes on top of dm-crypt block

BTRFS Linux kernel BUG

2011-05-12 Thread Swâmi Petaramesh
(Not sure if this list allows attachments, as the message I sent doesn't seem to have been dispatched. I resend without the attachment, available anyway at the URL below:) https://bugs.launchpad.net/ubuntu/+source/linux/+bug/781694 On a BTRFS machine, the working Gnome session suddenly

Re: BTRFS Linux kernel BUG

2011-05-12 Thread Swâmi Petaramesh
Le jeudi 12 mai 2011 à 11:40 -0400, Josef Bacik a écrit : Did you happen to get dmesg from that? It seems that you got disk errors while writing out the supers, which points to a hardware problem, but having the full dmesg would be good to say for sure. Thanks, What I got in syslog is

Re: BTRFS, encrypted LVM and disk write cache ?

2011-05-12 Thread Swâmi Petaramesh
Hi, Le jeudi 12 mai 2011 à 11:42 -0400, Josef Bacik a écrit : ...So I've turned my write cache off, but I notice this is stated for kernel 2.6.33, so wonder if this still is an issue with 2.6.38, or has it been addressed since ? If you mount and start writing and don't see a message in

Re: BTRFS, encrypted LVM and disk write cache ?

2011-05-13 Thread Swâmi Petaramesh
Hi Fajar, Le vendredi 13 mai 2011 à 13:54 +0700, Fajar A. Nugraha a écrit : Well, first of all, btrfs is still under heavy development. The wiki https://btrfs.wiki.kernel.org/index.php/Main_Page says in bold: « Btrfs is under heavy development, but every effort is being made to keep the

Re: BTRFS, encrypted LVM and disk write cache ?

2011-05-13 Thread Swâmi Petaramesh
Le vendredi 13 mai 2011 à 16:16 +0700, Fajar A. Nugraha a écrit : IIRC 2.6.38 has a bug in that you can't use mount option subvol=... if the fs/subvolume is newly created, while 2.6.39 works fine. At least that's what I experienced, so now I use subvolid to select subvolume. # uname -a Linux

Understanding DF, etc.

2011-05-13 Thread Swâmi Petaramesh
Hi list, I have trouble understanding this, which doesn't really correspond to the wiki FAQ (so my question is hopefully not a FAQ ;-) : # btrfs fi df / Data: total=74.01GB, used=72.77GB System, DUP: total=8.00MB, used=16.00KB System: total=4.00MB, used=0.00 Metadata, DUP: total=1.75GB,

Re: BTRFS, encrypted LVM and disk write cache ?

2011-05-13 Thread Swâmi Petaramesh
Le vendredi 13 mai 2011 à 16:16 +0700, Fajar A. Nugraha a écrit : if you encounter problems try to use latest available kernel for Natty first. If it doesn't work, try latest vanilla kernel from kernel.org. When I was younger I used to spend days compiling and installing and testing things,

BTRFS memory usage

2011-05-13 Thread Swâmi Petaramesh
Hi, I was wondering about BTRFS memory needs. For example ZFS is known to have a huge memory footprint, so it is not advisable on systems with little RAM. I was wondering about BTRFS, and couldn't find anything in the FAQ... TIA. -- To unsubscribe from this list: send the line unsubscribe

Re: Understanding DF, etc.

2011-05-14 Thread Swâmi Petaramesh
Hi Helmut, Le vendredi 13 mai 2011 à 21:50 +0200, Helmut Hullen a écrit : That may depend on the mkfs.btrfs options - which options have you set? Well, actually none, except for -L ;-) What tells df -t btrfs btrfs filesystem show root@tethys:~# df -t btrfs Sys. de

Re: cow versus data erasure

2011-05-15 Thread Swâmi Petaramesh
Le dimanche 15 mai 2011 à 11:43 +0200, radame...@freenet.de a écrit : since btrfs uses cow I wonder how I can erase confidential data. Replacing the file does not work, since the new content is written to new blocks while the old confidential content remains in its old block (which may be

Re: Understanding DF, etc.

2011-05-15 Thread Swâmi Petaramesh
Le dimanche 15 mai 2011 à 19:28 +0200, Helmut Hullen a écrit : shows that that device with brutto 150 GByte is nearly full with its 78 GByte (or 73 GByte) data because it uses this kind of RAID1? No. Here's the current situation on same machine : # btrfs fi df / Data: total=85.01GB,

Re: curious writes on mounted, not used btrfs filesystem

2011-05-22 Thread Swâmi Petaramesh
Le dimanche 22 mai 2011 à 10:34 +0100, Stephane Chazelas a écrit : I noticed that whenever I do sync, btrfs will write for around 6.5s and write 13 MB (see below). [...] I had also noticed here, without really paying further attention, that external USB HDs with a BTRFS mounted, but

Is BTRFS bedup maintained ?

2014-03-02 Thread Swâmi Petaramesh
? TIA. Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

[Repost] Is BTRFS bedup maintained ?

2014-03-05 Thread Swâmi Petaramesh
it ? - Is there a risk that it causes data loss or corruption ? TIA. Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo

Kernel BUG: btrfs send - Incremental backup

2014-03-07 Thread Swâmi Petaramesh
88003b84bb48 mars 08 08:22:02 tethys kernel: ---[ end trace 718b3fc11b4d9241 ]--- HTH, TIA. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org

Re: Massive BTRFS performance degradation

2014-03-09 Thread Swâmi Petaramesh
of my laptops that has a SSD... -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E A bus station is where buses stop. A train station is where trains stop. On my desk, there is a workstation... -- To unsubscribe from this list: send the line unsubscribe linux-btrfs

Re: Massive BTRFS performance degradation

2014-03-09 Thread Swâmi Petaramesh
, at least...) Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

Re: Massive BTRFS performance degradation

2014-03-09 Thread Swâmi Petaramesh
. The timescales are just quite long. If the timescales become really too long, people with just end keeping with the idea that BTRFS is not ready for production and won't be any previsible time soon... Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E

Re: Kernel BUG: btrfs send - Incremental backup

2014-03-10 Thread Swâmi Petaramesh
Le lundi 10 mars 2014 02:16:01 vous avez écrit : Does the filesystem pass the btrfsck? If not, would you please try btrfsck first? It passes scrub with 0 errors... Do I need to bring it offline to pass btrfsck anyway ? -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP

Re: Kernel BUG: btrfs send - Incremental backup

2014-03-10 Thread Swâmi Petaramesh
Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

Re: Kernel BUG: btrfs send - Incremental backup

2014-03-12 Thread Swâmi Petaramesh
looking for, you will have multiple of these. Thanks, Josef -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

Rebalance makes BTRFS 10x slower

2014-03-23 Thread Swâmi Petaramesh
and operate, to the point it has become hardly usable :-( I would have thought a rebalance would have improved the filesystem organization, looks like it's the absolute contrary :-( -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send

BTRFS setup advice for laptop performance ?

2014-04-04 Thread Swâmi Petaramesh
? - Generally speaking, does LZO compression improve or degrade performance ? I'm not able to figure it out clearly. TIA for the insight. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body

Re: BTRFS setup advice for laptop performance ?

2014-04-04 Thread Swâmi Petaramesh
snapshots good at ?? Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

Re: BTRFS setup advice for laptop performance ?

2014-04-04 Thread Swâmi Petaramesh
with HD LED steady lit, that booting bhas become so long that the GUI DM dies of timeout before it even starts, and you have to restart it manualle... you can tell it's gone sloow without any benchmark figures... (Disk health good on all machines...) Go figure... -- Swâmi Petaramesh sw

Re: BTRFS setup advice for laptop performance ?

2014-04-05 Thread Swâmi Petaramesh
, and you shouldn't drive too much in cities as it will smoke too much... and not too much motorways either as the motor might heat a bit too much. I need a filesystem that fits me, I don't want to have to fit my filesystem :-\ -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP

Re: BTRFS setup advice for laptop performance ?

2014-04-06 Thread Swâmi Petaramesh
, and forget it, and not to reformat everything again in a month or so (as soon as I will tell myself : « Well, the improvements promised by kernel 3.14 are still far behind my usability needs »)... Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E

Scrub bug on kernel 2.13

2014-04-07 Thread Swâmi Petaramesh
[-d] /'. root@zafu:~# btrfs scrub status / scrub status for 13c87f57-3a85-4daf-a4bf-ba777407c169 scrub started at Mon Apr 7 09:49:48 2014, running for 693 seconds total bytes scrubbed: 34.06GiB with 0 errors -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP

Re: Scrub bug on kernel 2.13

2014-04-07 Thread Swâmi Petaramesh
Sorry, I meant kernel 3.13 :-) Linux zafu 3.13.8-1-ARCH #1 SMP PREEMPT Tue Apr 1 12:19:51 CEST 2014 x86_64 GNU/Linux Le lundi 7 avril 2014 10:32:04 Swâmi Petaramesh a écrit : Hi there, Machine got rebooted while scrub was in process, and now it looks like a scrub zombie... How do I

Re: Scrub bug on kernel 3.13

2014-04-07 Thread Swâmi Petaramesh
Install Script : Yes Validated By : Signature Thanks again :-) -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E signature.asc Description: This is a digitally signed message part.

Using noCow with snapshots ?

2014-04-09 Thread Swâmi Petaramesh
in the snapshot as well, efectively defeating the snapshot ? 2/ Being snapshotted, will the database be COWed even though it's supposed to be noCow ? 3/ Are both options mutually incompatible in some more osbcure ways ? I'd like to know where I'm going with this ;-) TIA and kind regards. -- Swâmi

Re: Using noCow with snapshots ?

2014-04-10 Thread Swâmi Petaramesh
, since snapshots stop at the subvolume boundary. That gives NOCOW a chance to actually *BE* NOCOW. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord

mount options ignored / unclear

2014-04-11 Thread Swâmi Petaramesh
regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

How to make BTRFS crawl

2014-04-11 Thread Swâmi Petaramesh
*minutes* ...Hope this may help hunting this down... Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

Re: Can anyone boot a system using btrfs root with linux 3.14 or newer?

2014-04-23 Thread Swâmi Petaramesh
,codepage=437,iocharset=utf8,shortname=mixed,errors=remount- ro 0 0 $ uname -r 3.14.1-1-ARCH -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org

3.14.4 Kernel BUG at fs/namei.c : KDE's kate + ecryptfs + BTRFS + LVM2 + LUKS

2014-05-16 Thread Swâmi Petaramesh
]--- -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

Using BTRFS on SSD now ?

2014-06-05 Thread Swâmi Petaramesh
? Is there any pro/cons currently, on a 3.14 kernel, about using BTRFS along with an SSD ? Is there specific advice about leaf size, use of compression, snapshots, (auto-)defrag etc, that might be relevant especially for SSDs ? TIA. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP

Re: Using BTRFS on SSD now ?

2014-06-05 Thread Swâmi Petaramesh
both of them on an LVM itself luks- encrypted using dm-crypt. All my machines have been made this way for *years*, so I know it works damn well ;-) ...And it also allows for hibernateing the system to (encrypted) swap space... That's a pretty fine setup :-) -- Swâmi Petaramesh sw

Re: Using BTRFS on SSD now ?

2014-06-05 Thread Swâmi Petaramesh
Le jeudi 5 juin 2014 17:59:48 Christoph Anton Mitterer a écrit : Be aware, that discard used with dm-crypt may have security implications. Thanks, I knew :-) -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Le sage n’est pas celui qui discrimine, c’est celui qui

BTRFS, SSD and single metadata

2014-06-16 Thread Swâmi Petaramesh
it be advisable to change metadata to SINGLE using a rebalance, or if I'd better just leave things the way they are...? TIA for any insight. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Tout le malheur des hommes vient de ce qu'ils ne vivent pas dans _le_ monde

Re: BTRFS, SSD and single metadata

2014-06-16 Thread Swâmi Petaramesh
regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

Re: BTRFS, SSD and single metadata

2014-06-16 Thread Swâmi Petaramesh
, will create entirely different binary ciphertext, so for sure both metadata copies will always be different and cannot be deduped by SSD firmware... Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Les êtres humains, cernés par leurs besoins, s'agitent

Low volume list ?

2011-09-01 Thread Swâmi Petaramesh
interesting :-} -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Avant qu'une personne n'étudie le Zen, les montagnes sont les montagnes, les eaux sont les eaux. Après un premier aperçu de la vérité du Zen, les montagnes ne sont plus les montagnes, les eaux ne sont plus les

Rename BTRfs to MuchSlowerFS ?

2011-09-05 Thread Swâmi Petaramesh
Hi list, I don't trust theoretical benchmarks that much and prefer real-life benchs on the occasion, so here's mine: Given 4 laptops, the most powerful of which was running BTRFS and the others ext3 or ext4, all machines running Ubuntu 11.04 Natty 32-bit with a stock Ubuntu 2.6.38-11

Re: Rename BTRfs to MuchSlowerFS ?

2011-09-06 Thread Swâmi Petaramesh
my mail, browse the web, etc, definitely do not correspond to what BTRFS was designed for. (Sorry for the rant, but this really pisses me off...) So I'm only wonderign whether I reformat my system to ext4 or ZFS, and whether I do it right now or on thursday... -- Swâmi Petaramesh sw

Re: Rename BTRfs to MuchSlowerFS ?

2011-09-15 Thread Swâmi Petaramesh
a memory-hungry system running damn slow... For the time being I will stick to ZFS for 64-bit machines with = 4GB RAM, and to ext4 for 32-bit systems with less RAM... I don't feel that BTRFS gives any advantage in its current state of development. Alas. -- Swâmi Petaramesh sw...@petaramesh.org http

Change small filesystem to normal

2012-07-22 Thread Swâmi Petaramesh
regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- 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

Re: Change small filesystem to normal

2012-07-22 Thread Swâmi Petaramesh
a écrit : On Sun, 22 Jul 2012 17:06:24 +0200 Swâmi Petaramesh sw...@petaramesh.org wrote: Hi, I've created a small BTRFS filesystem, where metadata+data are mixed (and metadata are not DUP'ed). Then I've enlarged the FS to 1 GB ; now I'd like to make it normal with separate data and metadata

Re: subvolumes: default and IDs

2012-07-30 Thread Swâmi Petaramesh
upon this one as well. That's typically the kind of bug that makes one wonder to what extent the software has ever been tested, and doubt it's anything close to production quality... :-/ -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list

free space cache generation ?

2012-09-19 Thread Swâmi Petaramesh
Hi there, I noticed my syslog is filling up with tons of: btrfs: free space inode generation (0) did not match free space cache generation (25326) ...any clue ? TIA. -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org

Re: free space cache generation ?

2012-09-19 Thread Swâmi Petaramesh
Le 19/09/2012 18:01, Josef Bacik a écrit : Yeah I need to just put those under a DEBUG ifdef, they aren't a big deal, just letting you know that the on disk cache is invalid and it will have to put it together ye olde fashioned way. ...But is it supposed to, and how to fix it ? -- Swâmi

Re: free space cache generation ?

2012-09-19 Thread Swâmi Petaramesh
trees (corresponding to removed snapshots as far as I could tell) were b0rked, and btrfsck couldn't help... So I lost the FS - and lost quite a bit of confidence into BTRFS the same day... :-\ -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis

Help understanding btrfsck output...

2012-10-05 Thread Swâmi Petaramesh
btree space waste bytes: 382927315 file data blocks allocated: 103024238592 referenced 102409895936 Btrfs Btrfs v0.19 -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line

BTRFS, getting darn slower everyday

2012-10-07 Thread Swâmi Petaramesh
was back to BTRFS, and I wouldn't have to revert back again :-/ Any advice or help greatly appreciated. TIA. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line unsubscribe linux

Re: BTRFS, getting darn slower everyday

2012-10-07 Thread Swâmi Petaramesh
0 0 /dev/VG1/BTR_POOL/data/VBOX_VMSbtrfs subvol=DATA/VBOX_VMS,space_cache,compress=lzo,noatime0 0 -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line

Re: BTRFS, getting darn slower everyday

2012-10-07 Thread Swâmi Petaramesh
will be enough, when I see my BTRFS is currently about 8x slower than what ext4 user to... -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message

Re: BTRFS, getting darn slower everyday

2012-10-07 Thread Swâmi Petaramesh
UBUNTU/@home/.snapshots/624/snapshot ID 3239 top level 5 path STORAGE/.snapshots/659/snapshot ID 3240 top level 5 path UBUNTU/@/.snapshots/626/snapshot ID 3241 top level 5 path UBUNTU/@home/.snapshots/625/snapshot ID 3242 top level 5 path STORAGE/.snapshots/660/snapshot Kind regards. -- Swâmi

Re: BTRFS, getting darn slower everyday

2012-10-08 Thread Swâmi Petaramesh
of the prominent purposes for which I use BTRFS, and the number of snapshots would grow immediately again, as I use the excellent OpenSuSE snapper tool, that makes a snapshot every single hour... Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je

Re: BTRFS, getting darn slower everyday

2012-10-08 Thread Swâmi Petaramesh
as far as RAM is concerned (just booting into a standard Ubuntu GUI and then accessing emailn, browser, office applications etc.) Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from

Re: BTRFS, getting darn slower everyday

2012-10-08 Thread Swâmi Petaramesh
that it's painfully slow. Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More

Re: BTRFS, getting darn slower everyday

2012-10-08 Thread Swâmi Petaramesh
not ? That's to bad :-( I fear that both the combination of autodefrag and the high number of snapshot could be the root-cause of the the bad performance. As a test, I will try to remove *most* of my snapshots and see if it helps... Thanks for the suggestion ! Kind regards. -- Swâmi

Re: BTRFS, getting darn slower everyday

2012-10-08 Thread Swâmi Petaramesh
and swift. So it seems that the number or active snapshots (or is it the number of subvols whatsoever ??) dramatically impacts performance... Thanks for the suggestion. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook

Re: BTRFS, getting darn slower everyday

2012-10-08 Thread Swâmi Petaramesh
their cache ignored...?) Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo

inode_cache

2012-10-14 Thread Swâmi Petaramesh
Hi there, On a performance standpoint - and on Ubuntu Quantall kernel 3.5.0-17 - is it advisable to mount BTRFS with inode_cache ? Is there any risk or counterpart doing so ? TIA, kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne

BTRFS cache problem

2012-11-10 Thread Swâmi Petaramesh
. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- 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

Re: BTRFS cache problem

2012-11-11 Thread Swâmi Petaramesh
Le 11/11/2012 15:05, Bart Noordervliet a écrit : which kernel version are you running? Hi Bart, # uname -srv Linux 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur

Re: BTRFS cache problem

2012-11-11 Thread Swâmi Petaramesh
tomorrow morning (and #me having slept at night... ;-) -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org

Re: BTRFS cache problem

2012-11-11 Thread Swâmi Petaramesh
of the caches from your fstab and kernel command line before you next mount the FS. Hugo. Thanks very much Hugo, I'll give this a try. Should I assume that the cache clearing / building is complete as soon as the disk is idle ? -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne

Re: BTRFS cache problem

2012-11-11 Thread Swâmi Petaramesh
... But for now I have to admit that I regret my choice performance wise (which is terrible...) and stability wise (Already 2 reinstalls with complete format, if there's a next one, the next one will be ZFS...) Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne

Re: BTRFS cache problem

2012-11-11 Thread Swâmi Petaramesh
. Unfortunately, same issue after applying your suggestions... [ 752.943532] btrfs: free space inode generation (0) did not match free space cache generation (203710) -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook

Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Swâmi Petaramesh
loading of the DB took them a couple hours... With BTRFS it's been 5x24 hours and counting... :-( This filesystem is pure crap as soon as it comes to database processing :-( Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas

Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Swâmi Petaramesh
distro's kernel, or using vanilla ones. Been there, done that. No more suffering for me please ;-)) I'll have to stick with current Ubuntu kernel, or at least with a future backport... Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je

Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Swâmi Petaramesh
, what is the effect of nocow with respect to snapshots ? I would assume that then, snapshots contain the current data ? Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send

Re: Example of BTRFS uglyssima performance : Bitcoin

2012-12-03 Thread Swâmi Petaramesh
release... If not, maybe in a year... Or a couple years... Well... Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body

Re: BTRFS, getting darn slower everyday

2012-12-09 Thread Swâmi Petaramesh
. Is it to expect that somewhere in the future, BTRFS will be able to defragment itself without duplicating snapshot data ? -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line unsubscribe

BTRFS fsck apparent errors

2012-07-03 Thread Swâmi Petaramesh
Hi there, A couple days ago, I have converted my Ubuntu Precise machine from ext4 to BTRFS using btrfs-convert. I currently use kernel: Linux fnix 3.2.0-26-generic #41-Ubuntu SMP Thu Jun 14 17:49:24 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux ...and a btrfs-tools package more recent than the

Re: BTRFS fsck apparent errors

2012-07-03 Thread Swâmi Petaramesh
regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

No more snapshot aware defrag ?

2014-06-17 Thread Swâmi Petaramesh
to re-enable the snapshot-awareness of defrag anytime soon ? TIA. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

btrfs fi df shows unknown ?

2014-07-17 Thread Swâmi Petaramesh
=106.00GiB, used=88.28GiB System, DUP: total=32.00MiB, used=24.00KiB Metadata, DUP: total=1.00GiB, used=520.36MiB unknown, single: total=176.00MiB, used=0.00 # btrfs --version Btrfs v3.14.2 # uname -r 3.15.5-200.fc20.x86_64 TIA, kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http

BTRFS kernel errors in 3.15.5

2014-07-19 Thread Swâmi Petaramesh
] ? kthread_create_on_node+0x1b0/0x1b0 juil. 19 09:12:57 zafu kernel: [81515efc] ret_from_fork+0x7c/0xb0 juil. 19 09:12:57 zafu kernel: [8108d350] ? kthread_create_on_node+0x1b0/0x1b0 -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from

REPORT: Still a lot of BTRFS freezes in 3.16.1-1-ARCH

2014-08-24 Thread Swâmi Petaramesh
something could seriously break in the end... Kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- 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

Kernel BUG during balance with 3.16.2-1-ARCH

2014-09-13 Thread Swâmi Petaramesh
1f 00 0f 0b 66 0f 1f 44 00 00 0f 0b 66 0f 1f 44 00 00 0f 0b 4c 89 f7 e8 ae 3a 05 00 8b 45 d0 eb aa sept. 13 16:20:04 tethys kernel: RIP [a0181457] walk_down_proc+0x317/0x330 [btrfs] -- Reboot -- -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E

Re: Performance Issues

2014-09-19 Thread Swâmi Petaramesh
doesn't surprise me at all, it's « slow performance », indeed, although I'm myself more accustomed to « incredibly fscking damn slow performance »... HTH -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Un homme ne doit pas avaler plus de bobards qu'il ne peut en

Re: nocow and compression

2014-10-27 Thread Swâmi Petaramesh
nt eract_with_direct_IO_or_COW.3F ah, sorry, I somehow overlooked this. Thanks Marc -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Tout être manifesté est là pour embaumer, pour exprimer la Présence. -- Jean-Marc Mantel -- To unsubscribe from this list: send

Kernel 3.17.2 and RO snapshots

2014-11-02 Thread Swâmi Petaramesh
corruption occurs, should I expect it to affect snapshots only, or the whole system ? TIA for any insight. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord

Re: Kernel 3.17.2 and RO snapshots

2014-11-02 Thread Swâmi Petaramesh
Le dimanche 2 novembre 2014 10:49:52 Hugo Mills a écrit : I'm a little lost with latest kernel issues, and would like to know if the data corruption with RO snapshots is fixed in 3.17.2, or not yet ? Yes, it is. Thank you Hugo :-) -- Swâmi Petaramesh sw...@petaramesh.org http

BRFS balance crash

2014-12-01 Thread Swâmi Petaramesh
:12:32 vajra kernel: [810b5210] ? kthread_create_on_node+0x1a0/0x1a0 déc. 01 12:12:32 vajra kernel: ---[ end trace f1f27f48a0abdf73 ]--- ...etc. Any indight / help much appreciated. TIA and kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E

Re: BRFS balance crash

2014-12-01 Thread Swâmi Petaramesh
:32 vajra kernel: [810b5210] ? kthread_create_on_node+0x1a0/0x1a0 déc. 01 12:12:32 vajra kernel: ---[ end trace f1f27f48a0abdf73 ]--- ...etc. Any indight / help much appreciated. TIA and kind regards. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E

Another BTRFS kernel Oops

2014-12-03 Thread Swâmi Petaramesh
trace 449348f354fd5be5 ]--- déc. 04 08:51:59 vajra abrt-dump-journal-oops[1249]: abrt-dump-journal-oops: Found oopses: 1 déc. 04 08:51:59 vajra abrt-dump-journal-oops[1249]: abrt-dump-journal-oops: Creating problem directories -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP

More and more kernel oopses in 3.17.4

2014-12-05 Thread Swâmi Petaramesh
-server[11581]: Deleting problem directory oops-2014-12-05-14:28:42-1102-0 (dup of oops-2014-12-01-12:12:02-1332-0) déc. 05 14:28:43 vajra abrt-dump-journal-oops[1102]: Reported 1 kernel oopses to Abrt -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe

Re: Another novice question comment

2012-12-27 Thread Swâmi Petaramesh
on /storage type btrfs (rw,relatime,subvol=STORAGE,autodefrag,compress=lzo) /dev/mapper/VG1-BTR_POOL on /data/BIG type btrfs (rw,noatime,subvol=DATA/BIG,compress=lzo) -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook

Re: Another novice question comment

2012-12-27 Thread Swâmi Petaramesh
... -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- 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

Re: Another novice question comment

2012-12-27 Thread Swâmi Petaramesh
Le 27/12/2012 20:27, Gene Czarcinski a écrit : Oh thanks for that little reminder that you can put btrfs on an LV. That's an installation over a LUKS-encrypted LVM for everything except for /boot, which lies on a separate ordinary partition... -- Swâmi Petaramesh sw...@petaramesh.org http

Re: Another novice question comment

2012-12-27 Thread Swâmi Petaramesh
Le 27/12/2012 20:35, Chris Murphy a écrit : On Dec 27, 2012, at 12:27 PM, Swâmi Petaramesh sw...@petaramesh.org wrote: Le 27/12/2012 20:25, Chris Murphy a écrit : For whatever reason, our mount command behaviors differ. When I use mount, I do not get a subvol entry at all in parenthesis like

Re: /boot as a btrfs subvolume

2013-01-06 Thread Swâmi Petaramesh
. UBUNTU/@boot, LMDE/@boot etc... Works just great. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org

BTRFS fails defragging

2013-02-21 Thread Swâmi Petaramesh
/initrd.img-3.5.0-24-generic /boot/initrd.img-3.5.0-24-generic: 3 extents found Any clue appreciated ;-) TIA. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord

Re: BTRFS fails defragging

2013-02-21 Thread Swâmi Petaramesh
1792 11792 12704495840 3712 2550421832 130756 65 eof /boot/initrd.img-3.5.0-24-generic: 3 extents found I'm puzzled... -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E -- To unsubscribe from this list: send the line unsubscribe

Another defrag question

2013-02-21 Thread Swâmi Petaramesh
copy of the defragged data ? TIA. -- Swâmi Petaramesh sw...@petaramesh.org http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook. -- To unsubscribe from this list: send the line unsubscribe linux-btrfs in the body of a message to majord...@vger.kernel.org More majordomo

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