search for: luns

Hi, I do have a disk array that is providing striped LUNs to my Solaris box. Hence I''d like to simply concat those LUNs without adding another layer of striping. Is this possibile with ZFS? As far as I understood, if I use zpool create myPool lun-1 lun-2 ... lun-n I will get a RAID0 striping where each data block is split across all &quot...

Hello, I know, that you had this discussion a view days ago but I''m in the installation phase of our new production servers and I intend to migrate the data from UFS volumes to ZFS volumes in near future. For doing this it must be ABSOLUTELY sure that I can resize the SAN LUNs because during the last 4 years I had to double the LUN size every year. I tried to resize a test volume following some hints from this forum but didn''t succeed. My Environment and procedure of doing it: * Sunfire X4600 running Solaris 10 (11/06) accessing through MPXIO an Compaq EVA3000...

...pe this isn''t too basic a question. I have a host where I setup ZFS. The Oracle DBAs did their thing and I know have a number of ZFS datasets with their respective clones and snapshots on serverA. I want to export some of the clones to serverB. Do I need to zone serverB to see the same LUNs as serverA? Or does it have to have preexisting, empty LUNs to import the clones? Please help. Thanks.

...nd other discussions about using ZFS on hardware RAID arrays, since we are deploying ZFS in a similar situation here. I''m sure I''m oversimplifying, but the consensus for general filesystem-type storage needs, as I''ve read it, tends toward doing ZFS RAID-Z (or RAID-Z2) on LUNS consisting of hardware RAID-0 stripes. This gives good performance, and allows ZFS self-healing properties, with reasonable space utilization, while taking advantage of the NV cache in the array for write acceleration. Well, that''s the approach that seems to match our needs, anyway. How...

virtio-scsi currently has limit of 8 outstanding notifications so when more that 8 LUNs are unplugged, some are missed. Commit 5ff843721467 ("scsi: virtio_scsi: unplug LUNs when events missed") Fixed this by checking the 'event overflow' bit and manually scanned the bus to see which LUNs are still there. However there is a corner case when all LUNs are unplugged. I...

Hi, I had 2 luns in a zfs mirrored config. I increased the size of both the luns by x gig and offlined/online the individual luns in the zpool, also tried an export/import of the zpool, but i am unable to see the increased size....what would i need to do to see the increased size?...or is it not possible yet? T...

...detect this. > > This change introduces the behaviour described above by scanning the > entire scsi target when LUN is set to 0. This is both a functional and a > performance fix. It aligns the driver with the spec and allows control > planes to hotplug targets with large numbers of LUNs without having to > request a RESCAN for each one of them. > > Signed-off-by: Matej Genci <matej at nutanix.com> > Suggested-by: Felipe Franciosi <felipe at nutanix.com> > --- > drivers/scsi/virtio_scsi.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(...

...detect this. > > This change introduces the behaviour described above by scanning the > entire scsi target when LUN is set to 0. This is both a functional and a > performance fix. It aligns the driver with the spec and allows control > planes to hotplug targets with large numbers of LUNs without having to > request a RESCAN for each one of them. > > Signed-off-by: Matej Genci <matej at nutanix.com> > Suggested-by: Felipe Franciosi <felipe at nutanix.com> > --- > drivers/scsi/virtio_scsi.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(...

...ernel stops scanning when there is a gap in the LUN list. I read in a number of places how to fix this issue, and indeed here: http://filedownloads.qlogic.com/files/driver/48437/README_qla2xxx2-6U4.htm#BlacklistEntries Apparently, I should be able to add a line to modprobe.conf that allows sparse LUNs. So I followed the instructions and added options scsi_mod dev_flags="SUN:CSM200_R:0x040" max_luns=20 and rebuilt initrd. This doesn't seem to work, as only LUN 0 is configured by the OS despite LUN 9 also being unmasked. I've also tried options scsi_mod default_dev_flags=0x040...

...and is able to find the >mirror >or reconstruct the data in a raidz config. >Therefore ZFS uses only valid data and is able to repair the data blocks >automatically. >This is not possible in a traditional filesystem/volume manager >configuration. The above is fine. If I have two LUNs. But my original question was if I only have one LUN. What about kernel panics from ZFS if for instance access to one controller goes away for a few seconds or minutes. Normally UFS would just sit there and warn I have lost access to the controller. Then when the controller returns, after a short...

...ented under OCFS. Supposedly they work fine when implemented as Raw Devices. We needed to reclaim some space from existing LUN's to create the raw devices as we had expected to able to put all Oracle related files under OCFS (Yes, we belived the hype). This required us to drop and recreate the LUNs that are to be used under OCFS. As a result OCFSTOOL does not recognize the new LUNs that were created. Also, any new LUNs that have been created are not being seen by OCFSTOOL. Oracle support on this issue has been expectedly poor. Has anyone else seen and issue like this ? Thanks in advance....

Note: for consistency, and to avoid sparse errors, convert all fields, even those no longer in use for virtio v1.0. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio_scsi.h | 32 +++++++++++++++------------- drivers/scsi/virtio_scsi.c | 51 ++++++++++++++++++++++++++++----------------- 2 files changed, 49 insertions(+), 34 deletions(-) diff --git

Note: for consistency, and to avoid sparse errors, convert all fields, even those no longer in use for virtio v1.0. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- include/linux/virtio_scsi.h | 32 +++++++++++++++------------- drivers/scsi/virtio_scsi.c | 51 ++++++++++++++++++++++++++++----------------- 2 files changed, 49 insertions(+), 34 deletions(-) diff --git

Note: for consistency, and to avoid sparse errors, convert all fields, even those no longer in use for virtio v1.0. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Acked-by: Paolo Bonzini <pbonzini at redhat.com> --- include/linux/virtio_scsi.h | 32 +++++++++++++++------------- drivers/scsi/virtio_scsi.c | 51 ++++++++++++++++++++++++++++----------------- 2 files changed,

Note: for consistency, and to avoid sparse errors, convert all fields, even those no longer in use for virtio v1.0. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Acked-by: Paolo Bonzini <pbonzini at redhat.com> --- include/linux/virtio_scsi.h | 32 +++++++++++++++------------- drivers/scsi/virtio_scsi.c | 51 ++++++++++++++++++++++++++++----------------- 2 files changed,

Note: for consistency, and to avoid sparse errors, convert all fields, even those no longer in use for virtio v1.0. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Acked-by: Paolo Bonzini <pbonzini at redhat.com> --- include/linux/virtio_scsi.h | 32 +++++++++++++++------------- drivers/scsi/virtio_scsi.c | 51 ++++++++++++++++++++++++++++----------------- 2 files changed,

Note: for consistency, and to avoid sparse errors, convert all fields, even those no longer in use for virtio v1.0. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Acked-by: Paolo Bonzini <pbonzini at redhat.com> --- include/linux/virtio_scsi.h | 32 +++++++++++++++------------- drivers/scsi/virtio_scsi.c | 51 ++++++++++++++++++++++++++++----------------- 2 files changed,

Note: for consistency, and to avoid sparse errors, convert all fields, even those no longer in use for virtio v1.0. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Acked-by: Paolo Bonzini <pbonzini at redhat.com> --- include/linux/virtio_scsi.h | 32 +++++++++++++++------------- drivers/scsi/virtio_scsi.c | 51 ++++++++++++++++++++++++++++----------------- 2 files changed,

Note: for consistency, and to avoid sparse errors, convert all fields, even those no longer in use for virtio v1.0. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Acked-by: Paolo Bonzini <pbonzini at redhat.com> --- include/linux/virtio_scsi.h | 32 +++++++++++++++------------- drivers/scsi/virtio_scsi.c | 51 ++++++++++++++++++++++++++++----------------- 2 files changed,

...'t work anymore.. initrd seems to use/mount /dev/sda* partitions instead of mpath0 device. In fact the whole mpath0 is not started up. The weird thing is that the other LUN is now using multipathing instead.. using mpath1 device. How can I fix that? I'd like to use multipathing for both LUNs, also for root device. If I regenerate initrd with verbose flag, it just sets up the mpath1, not mpath0. I guess that's because mpath0 is not running when regenerating initrd. I have edited /etc/multipath.conf and disabled the "blacklist" line, and added multipath-entries for bot...