Hi all. I'm very happy with using srpt disk via ib_srp (linux 3.10).
Storage used by virtual machines (xen), target side (2 servers):
Software raid 10 with lvm on top of it.
scst.conf:
HANDLER vdisk_fileio {
DEVICE sas00_md127 {
filename /dev/md127
nv_cache 1
}
}
TARGET_DRIVER ib_srpt {
TARGET ib_srpt_target_0 {
enabled 1
io_grouping_type this_group_only
rel_tgt_id 1
LUN 0 sas00_md127
}
}
LVM (pv /dev/md127) exported to initiator node (xen).
On initiator node from both servers disks are goes to multipath.
On this pv i have many lv for each virtual machine.
For each vps i'm assemble raid1 from 2 lv (lv from different target nodes).
Sometimes all works fine, sometimes not. Which sysfs/procfs entries i
can check on initiator and target side to determine bottleneck? I'm
try to run blktrace to md device provide for vps, but not get needed
info.
Linux 3.10
SCST v3.0.0-pre2 (svn 4973)
Debian 7
Can somebody helps me?
--
Vasiliy Tolstov,
e-mail: [email protected]
jabber: [email protected]
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