search for: fcal

Dtrace and Performance Teams, I have the following IO Performance Specific Questions (and I''m already savy with the lockstat and pre-dtrace utilities for performance analysis.. but in need of details regarding specifying IO bottlenecks @ the controller or IO bus..) : **Q.A*> Determining IO Saturation bottlenecks ( */.. beyond service times and kernel contention.. )/ I''m

...roller and OS. This is what oem''s do to ensure that drives from different manufacturers and revisions all have the same capacity. Different routes need to be followed for (S)ATA and SCSI/SAS drives, because of different command sets. I''ve no experience with setting the capacity on FCAL drives. I just bought the drives from the oem when using FCAL drives. First S(ATA), the feature to use is the Device Configuration Overlay (DCO). Various tools exist to set and reset/recover the capacity of the drive. Some drive manufacturers have a (diagnostic) tool which can set the DCO. Another...

...written in S-plus which I think is converted successfully to R with the exception of part of the opt.param function written. In S-plus it is: nlminb(start=x0, obj=negllgamma.f, scale=1, lower=c(0.01,0.0001), upper=c(10,0.9999), gamma=gamma, maxlik=maxlik, y=ldose, s=lse, max.iter = 1000, max.fcal = 1000)$par and so far with R I've got to: optim(par=x0, fn=negllgamma.f, method="L-BFGS-B", lower=c(0.01,0.0001), upper=c(10,0.9999), gamma=gamma, maxlik=maxlik, y=ldose, s=lse, control=list(maxit = 1000))$par however I've failed to find an equivalent to "max....

We have 14 500GB PATA drives left over from another project. Given that ZFS seems to prefer working with jbod''s, does anyone know of an inexpensive enclosure with an fcal interface to host the disks? This message posted from opensolaris.org

....2.2 to allow me to do PCI passthrough), but as soon as I start up a VM with a phys device passed through, the first layer loses all connectivity to the SAN. Setup: * 2 UCS B200M2 blades - configured with 9 vHBAs. * Linux machines running LIO-ORG''s and SCST''s FCAL target mode (trying both to decide on which to use going forwards) The first vHBA is passed through to the "bare metal" OVM3.2.2, and the rest are managed through xen-pciback. I then install another OVM3.2.4 instance in an HVM with 1 vHBA passed through. Within the nested OVS (wh...

Hi Folks, I''ve got a 3.9 Tb zpool, and it is casing kernel panics on my Solaris 10 280r (SPARC) server. The message I get on panic is this: panic[cpu1]/thread=2a100a95cc0: zfs: freeing free segment (offset=423713792 size=1024) This seems to come about when the zpool is being used or being scrubbed - about twice a day at the moment. After the reboot, the scrub seems to have

...kefile ++++ b/drivers/scsi/Makefile +@@ -21,6 +21,7 @@ CFLAGS_seagate.o = -DARBITRATE -DPARIT + subdir-$(CONFIG_PCMCIA) += pcmcia + + obj-$(CONFIG_SCSI) += scsi_mod.o ++obj-$(CONFIG_SCSI_TGT) += scsi_tgt.o + + obj-$(CONFIG_RAID_ATTRS) += raid_class.o + +@@ -122,6 +123,7 @@ obj-$(CONFIG_SCSI_FCAL) += fcal.o + obj-$(CONFIG_SCSI_LASI700) += 53c700.o lasi700.o + obj-$(CONFIG_SCSI_NSP32) += nsp32.o + obj-$(CONFIG_SCSI_IPR) += ipr.o ++obj-$(CONFIG_SCSI_SRP) += libsrp.o + obj-$(CONFIG_SCSI_IBMVSCSI) += ibmvscsi/ + obj-$(CONFIG_SCSI_SATA_AHCI) += libata.o ahci.o + obj-$(CONFIG_SCSI_SATA_SVW) +=...

Not sure if it''s been posted yet, my email is currently down... http://weblog.infoworld.com/yager/archives/2007/10/suns_zfs_is_clo.html Interesting piece. This is the second post from Yager that shows solaris in a pretty good light. I particularly like his closing comment: "If you haven''t checked out ZFS yet, do, because it will eventually become ubiquitously implemented