I'm a big fan of zfs, but the compression won't be a factor since backuppc
already compresses the data. My one backuppc box runs FreeBSD with the data on
zfs and compression off.
I like managing storage with the zpool and zfs commands much better than md,
lvm and ext4.
RP
Sent from my U.S. Cellular® Smartphone
-------- Original message --------
From: Sabuj Pattanayek <[email protected]>
Date: 12/02/2013 4:42 PM (GMT-06:00)
To: "General list for user discussion, questions and support"
<[email protected]>
Subject: Re: [BackupPC-users] Filesystem?
I've been doing some ZFS on linux vs XFS benchmarking and I'm seeing that ZFS
is performing slightly better than XFS on reads and writes but sucks on
deletes. If you're not going to be doing lots of deletes and need the ability
to expand (e.g. thinking of using LVM) then ZFS may be a nice alternative to
XFS+LVM . ZFS also has built in compression, and so far with my benchmarks
(using lzjb) with it turned, random, sequential reads and writes are slightly
slower than the vs without compression and still a few seconds faster than XFS
(which has no compression).
On Mon, Dec 2, 2013 at 4:35 PM, Carl Cravens <[email protected]> wrote:
My experience troubleshooting I/O performance over iSCSI is that Ext4
journaling has a much higher CPU overhead than XFS does. Papers I've read show
evidence that "modern" XFS journaling scales better (better performance) than
Ext4 as disks grow larger. http://lwn.net/Articles/476263/
As a sysadmin, I like XFS management tools better than I do Ext4's.
On 12/02/2013 01:15 PM, Hans Kraus wrote:
> Am 02.12.2013 16:00, schrieb [email protected]:
>> Hi,
>> I'm using BackupPC 3.2.1-4 (official Debian 7 package).
>> I'm going to configure an external storage (Coraid) in order to backup
>> several
>> server (mostly Linux).
>> What kind of file system do you suggest?
>> Array is 7 TB large (raid6).
>> Thank you very much
>
> Hi,
> I've chosen Ext4, standig before the same problem some months ago. The
> reason behind this decision was that Ext4 seemed the best 'general
> purpose' FS. Maybe one of the developers can shed more light on this.
>
> Regards, Hans
>
>
>
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--
Carl D Cravens ([email protected]), Ext 228 (620.327.1228)
Lead System Architect
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