On 06/25/2016 02:16 AM, Ritesh Raj Sarraf wrote:
> On Thu, 2016-06-23 at 16:50 -0600, Andrew Patterson wrote: >> +# Save boot
> setting for aio-max-nr. >> +BOOT_AIO_MAX_NR=$(cat
/proc/sys/fs/aio-max-nr) >> + >> if [ -f /etc/multipath-tools-boot.conf
]; then >> . /etc/multipath-tools-boot.con
On Thu, 2016-06-23 at 16:50 -0600, Andrew Patterson wrote:
> +# Save boot setting for aio-max-nr.
> +BOOT_AIO_MAX_NR=$(cat /proc/sys/fs/aio-max-nr)
> +
> if [ -f /etc/multipath-tools-boot.conf ]; then
> . /etc/multipath-tools-boot.conf
> else
> MULTIPATH_TOOLS_MODULES="dm-mod dm-multipa
On Mon, 20 Jun 2016 16:40:29 -0600 Andrew Patterson
wrote:
> On Thu, 16 Jun 2016 15:19:22 +0530 Ritesh Raj Sarraf wrote:
> > Control: tag -1 +pending
> >
> > On Wed, 2016-06-15 at 13:03 -0600, Andrew Patterson wrote:
> > > For most users this is not an issue. How many systems are going to use
>
On Thu, 16 Jun 2016 15:19:22 +0530 Ritesh Raj Sarraf wrote:
> Control: tag -1 +pending
>
> On Wed, 2016-06-15 at 13:03 -0600, Andrew Patterson wrote:
> > For most users this is not an issue. How many systems are going to use
> > that many LUNs?
> >
>
> I agree.
>
> > One counter-example is usi
Control: tag -1 +pending
On Wed, 2016-06-15 at 13:03 -0600, Andrew Patterson wrote:
> For most users this is not an issue. How many systems are going to use
> that many LUNs?
>
I agree.
> One counter-example is using one or more FC LUNs per VM guest on a
> host. In such a case, one can just mod
On Thu, 16 Jun 2016 00:15:37 +0530 Ritesh Raj Sarraf wrote:
> On Wed, 2016-06-15 at 11:12 -0600, Andrew Patterson wrote:
> >
> > Thanks for reminding me about max_fds. At boot:
> >
> > # cat /proc/sys/fs/nr_open
> > 1048576
> >
> > and
> >
> > # multipath -t | grep max_fds
> > Â Â Â Â Â Â Â m
On Wed, 2016-06-15 at 11:12 -0600, Andrew Patterson wrote:
>
> Thanks for reminding me about max_fds. At boot:
>
> # cat /proc/sys/fs/nr_open
> 1048576
>
> and
>
> # multipath -t | grep max_fds
> max_fds "max"
>
> So this should already be set to 1048576. I tried the test again after
>
On 06/15/2016 08:43 AM, Ritesh Raj Sarraf wrote:
> Control: tag -1 moreinfo
>
> On Tue, 2016-06-14 at 17:30 -0600, Andrew Patterson wrote:
>> There is no output in dmesg.
>>
>> Changing /proc/sys/fs/aio-max-nr from the default 65536 to 1048576
>> seems to help. With this change, I can go up to 256
Control: tag -1 moreinfo
On Tue, 2016-06-14 at 17:30 -0600, Andrew Patterson wrote:
> There is no output in dmesg.
>
> Changing /proc/sys/fs/aio-max-nr from the default 65536 to 1048576
> seems to help. With this change, I can go up to 256 LUNs (1024 paths)
> with no problems.
>
> I have seen si
Package: multipath-tools
Version: 0.6.1-3
Multipath discovery fails to find some paths when a large number of
paths are used. I used the following to test this:
1. Present 64 FC LUNs to the OS with 4 paths each (256 paths total).
2. Run multipath -F to make sure we don't have any intermediate re
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