List-id: Xen user discussion <xen-users.lists.xen.org>
Hi,
XFS is of course checked online, too, like almost any journaling filesystem. Let me add that the BIG HUGE OBVIOUS problem in your setup is the Debian iSCSI target with the md raid6's, not the ZFS box.
Well, this is not truly a question for the Xen mailing list...
however.
If perfromance doesn't matter that much, you can first use the
"sync" mount option wich would make sure I/O are written to
the media asap. Also using "barriers=yes" (which should be the
default) would ensure better reliability. Ihave also heard using a
different local device as the logdevice is a good idea... for
exemple a local flash or sata drive.
Regards.
Le 24/02/2012 08:43, Denny Schierz a écrit :
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?
So, I need just a few suggestions :-)
cu denny
-- the purpose of libvirt is to provide an abstraction layer hiding all xen features added since 2006 until they were finally understood and copied by the kvm devs.
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