Hello,
Maybe this question should be put on another list, but since there
are a lot of people here using all kinds of HBAs, this could be right
anyway;
I have a X4150 running snv_134. It was shipped with a "STK RAID INT"
adaptec/intel/storagetek/sun SAS HBA.
When running the card in copyback write cache mode, I got horrible
performance (with zfs), much worse than with copyback disabled
(which I believe should mean it does write-through), when tested
with filebench.
This could actually be expected, depending on how good or bad the
the card is, but I am still not sure about what to expect.
It logs some errors, as shown with "fmdump -e(V).
It is most often a pci bridge error (I think), about five to ten
times an hour, and occasionally a problem with accessing a
mode page on the disks for enabling/disabling the write cache,
one error for each disk, about every three hours.
I don't believe the two have to be related.
I am not sure if the PCI-PCI bridge is on the RAID board itself
or in the host.
I haven't seen this problem on other more or less identical
machines running sol10.
Is this a known software problem, or do I have faulty hardware?
Thanks!
/ragge
--------------
% fmdump -e
...
Apr 04 01:21:53.2244 ereport.io.pci.fabric
Apr 04 01:30:00.6999 ereport.io.pci.fabric
Apr 04 01:30:23.4647 ereport.io.scsi.cmd.disk.dev.uderr
Apr 04 01:30:23.4651 ereport.io.scsi.cmd.disk.dev.uderr
...
% fmdump -eV
Apr 04 2010 01:21:53.224492765 ereport.io.pci.fabric
nvlist version: 0
class = ereport.io.pci.fabric
ena = 0xd6a00a43be800c01
detector = (embedded nvlist)
nvlist version: 0
version = 0x0
scheme = dev
device-path = /p...@0,0/pci8086,2...@4
(end detector)
bdf = 0x20
device_id = 0x25f8
vendor_id = 0x8086
rev_id = 0xb1
dev_type = 0x40
pcie_off = 0x6c
pcix_off = 0x0
aer_off = 0x100
ecc_ver = 0x0
pci_status = 0x10
pci_command = 0x147
pci_bdg_sec_status = 0x0
pci_bdg_ctrl = 0x3
pcie_status = 0x0
pcie_command = 0x2027
pcie_dev_cap = 0xfc1
pcie_adv_ctl = 0x0
pcie_ue_status = 0x0
pcie_ue_mask = 0x100000
pcie_ue_sev = 0x62031
pcie_ue_hdr0 = 0x0
pcie_ue_hdr1 = 0x0
pcie_ue_hdr2 = 0x0
pcie_ue_hdr3 = 0x0
pcie_ce_status = 0x0
pcie_ce_mask = 0x0
pcie_rp_status = 0x0
pcie_rp_control = 0x7
pcie_adv_rp_status = 0x0
pcie_adv_rp_command = 0x7
pcie_adv_rp_ce_src_id = 0x0
pcie_adv_rp_ue_src_id = 0x0
remainder = 0x0
severity = 0x1
__ttl = 0x1
__tod = 0x4bb7cd91 0xd617cdd
...
Apr 04 2010 01:30:23.464768275 ereport.io.scsi.cmd.disk.dev.uderr
nvlist version: 0
class = ereport.io.scsi.cmd.disk.dev.uderr
ena = 0xde0cd54f84201c01
detector = (embedded nvlist)
nvlist version: 0
version = 0x0
scheme = dev
device-path = /p...@0,0/pci8086,2...@4/pci108e,2...@0/d...@5,0
devid = id1,s...@tsun_____stk_raid_int____ea4b6f24
(end detector)
driver-assessment = fail
op-code = 0x1a
cdb = 0x1a 0x0 0x8 0x0 0x18 0x0
pkt-reason = 0x0
pkt-state = 0x1f
pkt-stats = 0x0
stat-code = 0x0
un-decode-info = sd_get_write_cache_enabled: Mode Sense caching page
code mismatch 0
un-decode-value =
__ttl = 0x1
__tod = 0x4bb7cf8f 0x1bb3cd13
...
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