Btrfs Heatmap - v6

Hi, A few days ago, I tagged v6 of the Btrfs Heatmap utility, which visualizes the usage of your btrfs filesystem: https://github.com/knorrie/btrfs-heatmap The main change is adapting to the python 3 only state of python-btrfs v6. There's no functional difference between v5. And... like

Re: [RFC PATCH v1 00/30] fs: inode->i_version rework and optimization

On Thu, Mar 30, 2017 at 12:12:31PM -0400, J. Bruce Fields wrote: > On Thu, Mar 30, 2017 at 07:11:48AM -0400, Jeff Layton wrote: > > On Thu, 2017-03-30 at 08:47 +0200, Jan Kara wrote: > > > Because if above is acceptable we could make reported i_version to be a > > > sum > > > of "superblock crash

python-btrfs v6: python 3 only + what now?

A few days ago, I tagged v6 of the python btrfs library: https://github.com/knorrie/python-btrfs == CHANGES == python-btrfs v6, Mar 24 2017 * Only Python 3 supported from now on * IOCTLs: INO_LOOKUP, LOGICAL_INO, TREE_SEARCH_V2, IOC_BALANCE_V2, IOC_BALANCE_CTL, BALANCE_PROGRESS * Data

Re: mix ssd and hdd in single volume

UGlee posted on Sat, 01 Apr 2017 14:06:11 +0800 as excerpted: > We are working on a small NAS server for home user. The product is > equipped with a small fast SSD (around 60-120GB) and a large HDD (2T to > 4T). > > We have two choices: > > 1. using bcache to accelerate io operation 2.

Re: Is btrfs-convert able to deal with sparse files in a ext4 filesystem?

Sean Greenslade posted on Sat, 01 Apr 2017 12:13:57 -0700 as excerpted: > On Sat, Apr 01, 2017 at 11:48:50AM +0200, Kai Herlemann wrote: >> I have on my ext4 filesystem some sparse files, mostly images from ext4 >> filesystems. >> Is btrfs-convert (4.9.1) able to deal with sparse files or can

Re: force btrfs to release underlying block device(s)

Glenn Washburn posted on Sat, 01 Apr 2017 00:58:19 -0500 as excerpted: > I've run into a frustrating problem with a btrfs volume just now. I > have a USB drive which has many partitions, two of which are luks > encrypted, which can be unlocked as a single, multi-device btrfs volume. > For some

mix ssd and hdd in single volume

We are working on a small NAS server for home user. The product is equipped with a small fast SSD (around 60-120GB) and a large HDD (2T to 4T). We have two choices: 1. using bcache to accelerate io operation 2. combining SSD and HDD into a single btrfs volume. Bcache is certainly designed for

Re: Do different btrfs volumes compete for CPU?

>> Approximately 16 hours ago I've run a script that deleted >> >~100 snapshots and started quota rescan on a large >> USB-connected btrfs volume (5.4 of 22 TB occupied now). That "USB-connected is a rather bad idea. On the IRC channel #Btrfs whenever someone reports odd things happening I ask

Re: backing up a file server with many subvolumes

Am Mon, 27 Mar 2017 07:53:17 -0400 schrieb "Austin S. Hemmelgarn" : > > I'd like to try to back up (duplicate) the file server filesystem > > containing these snapshot subvolumes for each remote machine. The > > problem is that I don't think I can use send/receive to do

Is btrfs-convert able to deal with sparse files in a ext4 filesystem?

Hi, I have on my ext4 filesystem some sparse files, mostly images from ext4 filesystems. Is btrfs-convert (4.9.1) able to deal with sparse files or can that cause any problems? Thanks in advance, Kai -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a

Re: backing up a file server with many subvolumes

Am Mon, 27 Mar 2017 08:57:17 +0300 schrieb Marat Khalili : > Just some consideration, since I've faced similar but no exactly same > problem: use rsync, but create snapshots on target machine. Blind > rsync will destroy deduplication of your snapshots and take huge > amount of

Re: Shrinking a device - performance?

Am Mon, 27 Mar 2017 20:06:46 +0500 schrieb Roman Mamedov : > On Mon, 27 Mar 2017 16:49:47 +0200 > Christian Theune wrote: > > > Also: the idea of migrating on btrfs also has its downside - the > > performance of “mkdir” and “fsync” is abysmal at the

is send/receive

Hello experts, quick question about btrfs send/receive: Is btrfs send/receive is prone to cause destination filesystem corruption/failure, when the source file system is bogus (due to bugs, or due to other factors like memory bit-flips happening, both *within* the source file system)? Or

Re: Shrinking a device - performance?

[ ... ] >>> $ D='btrfs f2fs gfs2 hfsplus jfs nilfs2 reiserfs udf xfs' >>> $ find $D -name '*.ko' | xargs size | sed 's/^ *//;s/ .*\t//g' >>> textfilename >>> 832719 btrfs/btrfs.ko >>> 237952 f2fs/f2fs.ko >>> 251805 gfs2/gfs2.ko >>> 72731 hfsplus/hfsplus.ko >>> 171623

Re: is send/receive

On Sat, Apr 01, 2017 at 05:25:06PM +0200, Lukas Tribus wrote: > Hello experts, > > > quick question about btrfs send/receive: > > Is btrfs send/receive is prone to cause destination filesystem > corruption/failure, when the source file system is bogus (due to > bugs, or due to other factors

Re: Is btrfs-convert able to deal with sparse files in a ext4 filesystem?

On Sat, Apr 01, 2017 at 11:48:50AM +0200, Kai Herlemann wrote: > Hi, > I have on my ext4 filesystem some sparse files, mostly images from > ext4 filesystems. > Is btrfs-convert (4.9.1) able to deal with sparse files or can that > cause any problems? >From personal experience, I would recommend