Re: iSCSI disconnects dilema

2007-01-14 Thread Danny Braniss
... So you had a scenario where a program was doing I/O right up to system (initiator) shutdown, and some of those I/O's got lost in the process? I guess I don't understand why the OS didn't flush all outstanding I/O buffers after terminating the program and before finishing the shutdown.

Re: iSCSI disconnects dilema

2007-01-14 Thread Scott Long
Wilko Bulte wrote: On Fri, Jan 12, 2007 at 09:31:04PM +0200, Danny Braniss wrote.. --s/l3CgOIzMHHjg/5 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 09, 2007 at 09:06:46AM +0200, Danny Braniss wrote: Hi,

Re: iSCSI disconnects dilema

2007-01-14 Thread Scott Long
Danny Braniss wrote: I forget, does iSCSI have a concept of a flush_cache command, or the equivalent of what parallel SCSI does with ordered tags? not realy - or I can't find it. iSCSI is mainly and envelope for scsi commands, so whatever the CAM does, it will pass it on. There are some

Re: iSCSI disconnects dilema

2007-01-13 Thread Danny Braniss
Wilko Bulte wrote: On Fri, Jan 12, 2007 at 09:31:04PM +0200, Danny Braniss wrote.. --s/l3CgOIzMHHjg/5 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 09, 2007 at 09:06:46AM +0200, Danny Braniss wrote:

Re: iSCSI disconnects dilema

2007-01-12 Thread Pawel Jakub Dawidek
On Tue, Jan 09, 2007 at 09:06:46AM +0200, Danny Braniss wrote: Hi, While I think I have almost solved the problem of network disconnects, It downed on me a major problem: When a 'local' disk crashes, the kernel will probably hang/panic/crash. if i don't try to recover, then there is no change

Re: iSCSI disconnects dilema

2007-01-12 Thread Danny Braniss
--s/l3CgOIzMHHjg/5 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 09, 2007 at 09:06:46AM +0200, Danny Braniss wrote: Hi, While I think I have almost solved the problem of network disconnects, It downed

Re: iSCSI disconnects dilema

2007-01-12 Thread Wilko Bulte
On Fri, Jan 12, 2007 at 09:31:04PM +0200, Danny Braniss wrote.. --s/l3CgOIzMHHjg/5 Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 09, 2007 at 09:06:46AM +0200, Danny Braniss wrote: Hi, While I

Re: iSCSI disconnects dilema

2007-01-09 Thread John Nielsen
On Tuesday 09 January 2007 02:06, Danny Braniss wrote: Hi, While I think I have almost solved the problem of network disconnects, It downed on me a major problem: When a 'local' disk crashes, the kernel will probably hang/panic/crash. if i don't try to recover, then there is no change in the

Re: iSCSI disconnects dilema

2007-01-09 Thread Oliver Fromme
Danny Braniss wrote: While I think I have almost solved the problem of network disconnects, It downed on me a major problem: When a 'local' disk crashes, the kernel will probably hang/panic/crash. if i don't try to recover, then there is no change in the above scenario. if i try to

Re: iSCSI disconnects dilema

2007-01-09 Thread John Nielsen
Forwarding a relevant comment from a parallel discussion on -questions. -- Forwarded Message -- Subject: Re: iSCSI Date: Tuesday 09 January 2007 11:35 From: Dan Nelson [EMAIL PROTECTED] To: DAve [EMAIL PROTECTED] Cc: Free BSD Questions list freebsd-questions@freebsd.org In the

Re: iSCSI disconnects dilema

2007-01-09 Thread Ivan Voras
John Nielsen wrote: I don't know how graceful the failure case is (perhaps not very)... Not at all - removing a mounted USB device panics the kernel. signature.asc Description: OpenPGP digital signature

iSCSI disconnects dilema

2007-01-08 Thread Danny Braniss
Hi, While I think I have almost solved the problem of network disconnects, It downed on me a major problem: When a 'local' disk crashes, the kernel will probably hang/panic/crash. if i don't try to recover, then there is no change in the above scenario. if i try to recover, then the client does