Re: [Xen-users] Save options for XFS over ISCSI ~ 17TB (for backup)

[Papp Tamas <tompos@xxxxxxxxxxxxx>]

On 02/24/2012 08:43 AM, Denny Schierz wrote:
> hi,
>
> I want to migrate away from Solaris with ZFS to Linux with XFS (BTRFS is to young) . At 
> the moment, I have Solaris 10 with ISCSI initiator running and a zpool with a size round 
> about ~17TB. The ISCSI target  is a Linux Debian with "tgt" Daemon and 
> connected via SAS (LSI Logic / Symbios Logic SAS2008) to several LSI JBODS (630j).
>
> Every jbod has 12 (2TB) disks and managed by mdadm as a RAID6 device and on top 
> LVM. I have two ISCSI target servers (one for _cold_ standby) and all servers 
> has  power connection via UPS and a second direct one.
>
> As I sad, I want to get away from Solaris 10 and know I search for options to 
> use XFS with save options, in case of emergency (poweroff etc.). We use the 
> JBODS mostly for backups (bacula) so, performance/realtime isn't imported, 
> since network is the limit.
>
> Under ZFS I can make sure,  with zpool scrub (file system check), that all data 
> are completely  written and consistence. But what is the best way under XFS? 
> Should I remount XFS every month for a file system check (re/mount) ? What 
> happens in the case, of ISCSI problems?
What's the problem with zfs? Why don't you use zfsonlinux?
AFAIK xfs online check cannot be done on xfs.

tamas

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