Hello,
I habe the problems described in here
https://btrfs.wiki.kernel.org/index.php/Gotchas:
Files with a lot of random writes can become heavily fragmented
(1+ extents) causing trashing on HDDs and excessive multi-second
spikes of CPU load on systems with an SSD or large amount a RAM.
On
From: Julia Lawall julia.law...@lip6.fr
Use WARN rather than printk followed by WARN_ON(1), for conciseness.
A simplified version of the semantic patch that makes this transformation
is as follows: (http://coccinelle.lip6.fr/)
// smpl
@@
expression list es;
@@
-printk(
+WARN(1,
es);
On 11/02/2012 08:05 PM, Gabriel wrote:
On Fri, 02 Nov 2012 13:02:32 +0100, Goffredo Baroncelli wrote:
On 2012-11-02 12:18, Martin Steigerwald wrote:
[...]
We could use Chunk(s) capacity instead of total/size ? I would like an
opinion from a english people point of view..
This is easy to
On 11/03/2012 12:44 AM, Hugo Mills wrote:
1 MiB stored in RAID-5 across 3 devices takes up 1.5 MiB -- multiplier ×1.5
(1 MiB over 2 devices is 512 KiB, plus an additional 512 KiB for parity)
1 MiB stored in RAID-5 across 6 devices takes up 1.2 MiB -- multipler ×1.2
(1 MiB over 5 devices
On 11/02/2012 11:06 PM, Hugo Mills wrote:
non-integer with the RAID-5/6 code (which is due Real Soon Now).
Hi Hugo,
do you have more information about raid ? When it will land on the btrfs
earth ? :-)
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From: Julia Lawall julia.law...@lip6.fr
Just use WARN_ON rather than an if containing only WARN_ON(1).
A simplified version of the semantic patch that makes this transformation
is as follows: (http://coccinelle.lip6.fr/)
// smpl
@@
expression e;
@@
- if (e) WARN_ON(1);
+ WARN_ON(e);
// /smpl
Hi Goffredo,
do you think it could be useful to add an optional argument like
bytenr, which tells where to read the superblock from? For example,
btrfs-convert first places the superblock on some block unused by
ext2, and only at the end it migrates the superblock to the standard
location. Not
do you have more information about raid ? When it will land on the btrfs
earth ? :-)
An unnamed source recently said today I'm fixing parity rebuild in
the middle of a read/modify/write. its one of my last blockers, at
which point several gags about progress meters were made.
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