| Message ID | 20161007131522.3442-1-xose.vazquez@gmail.com (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | Mike Snitzer |
| Headers | show |
On 10/07/2016 03:15 PM, Xose Vazquez Perez wrote: > System Vendor Product Multipathing Policy > =============== ====== ================ ======================= > FlashSystem 710 IBM FlashSystem Symmetric Active/Active > FlashSystem 720 IBM FlashSystem Symmetric Active/Active > FlashSystem 810 IBM FlashSystem Symmetric Active/Active > FlashSystem 820 IBM FlashSystem Symmetric Active/Active > FlashSystem 840 IBM FlashSystem-9840 Symmetric Active/Active > FlashSystem 900 IBM FlashSystem-9840 Symmetric Active/Active > > Based on documentation from the manufacturer: > http://www.redbooks.ibm.com/redbooks/pdfs/sg248271.pdf IBM RedBooks are more like descriptions for one particular use case as described in the book rather than reference manuals. Product documentation is elsewhere and also updated more often (like each product release) than a RedBook. E.g. for IBM FlashSystem 900: http://www.ibm.com/support/knowledgecenter/STKMQB/com.ibm.storage.flashsystem900.1.2.doc/tms_multipathing.html You'll notice that we from Linux on s390x have a bit different recommendations for some of the values (no_path_retry actually depends on whether you have a cluster software/filesystem that can cope with EIO on last-path-loss. Currently, I see the default without that, i.e. non-clustered from which we would like to hide any path issues). Is there some way to have "dependent" settings? > Cc: Hannes Reinecke <hare@suse.de> > Cc: Christophe Varoqui <christophe.varoqui@opensvc.com> > Cc: device-mapper development <dm-devel@redhat.com> > Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com> > --- > libmultipath/hwtable.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/libmultipath/hwtable.c b/libmultipath/hwtable.c > index e1b055a..ff6989d 100644 > --- a/libmultipath/hwtable.c > +++ b/libmultipath/hwtable.c > @@ -522,6 +522,13 @@ static struct hwentry default_hw[] = { > .no_path_retry = NO_PATH_RETRY_QUEUE, > .pgpolicy = MULTIBUS, > }, > + { > + /* FlashSystem 710/720/810/820/840/900 */ > + .vendor = "IBM", > + .product = "FlashSystem", > + .no_path_retry = NO_PATH_RETRY_FAIL, > + .pgpolicy = MULTIBUS, > + }, > /* > * IBM Power Virtual SCSI Devices > * >
On 10/07/2016 04:24 PM, Steffen Maier wrote: > You'll notice that we from Linux on s390x have a bit different recommendations > for some of the values (no_path_retry actually depends on whether you have a > cluster software/filesystem that can cope with EIO on last-path-loss. Currently, > I see the default without that, i.e. non-clustered from which we would like to hide any path issues). This has to be modified manually. > Is there some way to have "dependent" settings? No. multipath.conf is mainly static. Only two options are dynamically reconfigured, ALUA-prio and the hardware handler with "detect_prio" and "retain_attached_hw_handler". -- dm-devel mailing list dm-devel@redhat.com https://www.redhat.com/mailman/listinfo/dm-devel
=============== ====== ================ ======================= FlashSystem 710 IBM FlashSystem Symmetric Active/Active FlashSystem 720 IBM FlashSystem Symmetric Active/Active FlashSystem 810 IBM FlashSystem Symmetric Active/Active FlashSystem 820 IBM FlashSystem Symmetric Active/Active FlashSystem 840 IBM FlashSystem-9840 Symmetric Active/Active FlashSystem 900 IBM FlashSystem-9840 Symmetric Active/Active Based on documentation from the manufacturer: http://www.redbooks.ibm.com/redbooks/pdfs/sg248271.pdf Cc: Hannes Reinecke <hare@suse.de> Cc: Christophe Varoqui <christophe.varoqui@opensvc.com> Cc: device-mapper development <dm-devel@redhat.com> Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com> --- libmultipath/hwtable.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libmultipath/hwtable.c b/libmultipath/hwtable.c index e1b055a..ff6989d 100644 --- a/libmultipath/hwtable.c +++ b/libmultipath/hwtable.c @@ -522,6 +522,13 @@ static struct hwentry default_hw[] = { .no_path_retry = NO_PATH_RETRY_QUEUE, .pgpolicy = MULTIBUS, }, + { + /* FlashSystem 710/720/810/820/840/900 */ + .vendor = "IBM", + .product = "FlashSystem", + .no_path_retry = NO_PATH_RETRY_FAIL, + .pgpolicy = MULTIBUS, + }, /* * IBM Power Virtual SCSI Devices *