From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?QkVSVFJBTkQgSm/Dq2w=?= Subject: Re: [BUG] Raid1/5 over iSCSI trouble Date: Fri, 19 Oct 2007 22:49:25 +0200 Message-ID: <47191855.4020402@systella.fr> References: <4714BB92.7040701@systella.fr> <47161CE3.80909@systella.fr> <47181CB2.1060602@tmr.com> <471864F8.9010209@systella.fr> <1192809103.30976.11.camel@dwillia2-linux.ch.intel.com> <4718DE66.8000905@tmr.com> <471916B5.6080709@systella.fr> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <471916B5.6080709@systella.fr> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iscsitarget-devel-bounces@lists.sourceforge.net Errors-To: iscsitarget-devel-bounces@lists.sourceforge.net To: Bill Davidsen Cc: linux-raid@vger.kernel.org, sparclinux@vger.kernel.org, Dan Williams , iscsitarget-devel@lists.sourceforge.net List-Id: linux-raid.ids QkVSVFJBTkQgSm/Dq2wgd3JvdGU6Cj4gQmlsbCBEYXZpZHNlbiB3cm90ZToKPj4gRGFuIFdpbGxp YW1zIHdyb3RlOgo+Pj4gT24gRnJpLCAyMDA3LTEwLTE5IGF0IDAxOjA0IC0wNzAwLCBCRVJUUkFO RCBKb8OrbCB3cm90ZToKPj4+ICAKPj4+PiAgICAgICAgIEkgcnVuIGZvciAxMiBob3VycyBzb21l IGRkJ3MgKHJlYWQgYW5kIHdyaXRlIGluIG51bGxpbykKPj4+PiBiZXR3ZWVuCj4+Pj4gaW5pdGlh dG9yIGFuZCB0YXJnZXQgd2l0aG91dCBhbnkgZGlzY29ubmVjdGlvbi4gVGh1cyBpU0NTSSBjb2Rl IHNlZW1zCj4+Pj4gdG8KPj4+PiBiZSByb2J1c3QuIEJvdGggaW5pdGlhdG9yIGFuZCB0YXJnZXQg YXJlIGFsb25lIG9uIGEgc2luZ2xlIGdpZ2FiaXQKPj4+PiBldGhlcm5ldCBsaW5rICh3aXRob3V0 IGFueSBzd2l0Y2gpLiBJJ20gaW52ZXN0aWdhdGluZy4uLgo+Pj4+ICAgICAKPj4+Cj4+PiBDYW4g eW91IHJlcHJvZHVjZSBvbiAyLjYuMjI/Cj4+Pgo+Pj4gQWxzbywgSSBkbyBub3QgdGhpbmsgdGhp cyBpcyB0aGUgY2F1c2Ugb2YgeW91ciBmYWlsdXJlLCBidXQgeW91IGhhdmUKPj4+IENPTkZJR19E TUFfRU5HSU5FPXkgaW4geW91ciBjb25maWcuICBTZXR0aW5nIHRoaXMgdG8gJ24nIHdpbGwgY29t cGlsZQo+Pj4gb3V0IHRoZSB1bm5lZWRlZCBjaGVja3MgZm9yIG9mZmxvYWQgZW5naW5lcyBpbiBh c3luY19tZW1jcHkgYW5kCj4+PiBhc3luY194b3IuCj4+Cj4+IEdpdmVuIHRoYXQgb2ZmbG9hZCBl bmdpbmVzIGFyZSBmYXIgbGVzcyB0ZXN0ZWQgY29kZSwgSSB0aGluayB0aGlzIGlzIGEgCj4+IHZl cnkgZ29vZCB0aGluZyB0byB0cnkhCj4gCj4gICAgIEknbSB0cnlpbmcgd2lodG91dCBDT05GSUdf RE1BX0VOR0lORT15LiBpc3RkMSBvbmx5IHVzZXMgNDAlIG9mIG9uZSAKPiBDUFUgd2hlbiBJIHJl YnVpbGQgbXkgcmFpZDEgYXJyYXkuIDElIG9mIHRoaXMgYXJyYXkgd2FzIG5vdyAKPiByZXN5bmNo cm9uaXplZCB3aXRob3V0IGFueSBoYW5nLgo+IAo+IFJvb3QgZ2Vyc2h3aW46Wy91c3Ivc2NyaXB0 c10gPiBjYXQgL3Byb2MvbWRzdGF0Cj4gUGVyc29uYWxpdGllcyA6IFtyYWlkMV0gW3JhaWQ2XSBb cmFpZDVdIFtyYWlkNF0KPiBtZDcgOiBhY3RpdmUgcmFpZDEgc2RpMVsyXSBtZF9kMHAxWzBdCj4g ICAgICAgMTQ2NDcyNTYzMiBibG9ja3MgWzIvMV0gW1VfXQo+ICAgICAgIFs+Li4uLi4uLi4uLi4u Li4uLi4uLi5dICByZWNvdmVyeSA9ICAxLjAlICgxNTcwNTUzNi8xNDY0NzI1NjMyKSAKPiBmaW5p c2g9MTEwMy45bWluIHNwZWVkPTIxODc1Sy9zZWMKCglTYW1lIHJlc3VsdC4uLgoKY29ubmVjdGlv bjI6MDogaXNjc2k6IGRldGVjdGVkIGNvbm4gZXJyb3IgKDEwMTEpCiAKICAgICAgICAgIHNlc3Np b24yOiBpc2NzaTogc2Vzc2lvbiByZWNvdmVyeSB0aW1lZCBvdXQgYWZ0ZXIgMTIwIHNlY3MKc2Qg NDowOjA6MDogc2NzaTogRGV2aWNlIG9mZmxpbmVkIC0gbm90IHJlYWR5IGFmdGVyIGVycm9yIHJl Y292ZXJ5CnNkIDQ6MDowOjA6IHNjc2k6IERldmljZSBvZmZsaW5lZCAtIG5vdCByZWFkeSBhZnRl ciBlcnJvciByZWNvdmVyeQpzZCA0OjA6MDowOiBzY3NpOiBEZXZpY2Ugb2ZmbGluZWQgLSBub3Qg cmVhZHkgYWZ0ZXIgZXJyb3IgcmVjb3ZlcnkKc2QgNDowOjA6MDogc2NzaTogRGV2aWNlIG9mZmxp bmVkIC0gbm90IHJlYWR5IGFmdGVyIGVycm9yIHJlY292ZXJ5CnNkIDQ6MDowOjA6IHNjc2k6IERl dmljZSBvZmZsaW5lZCAtIG5vdCByZWFkeSBhZnRlciBlcnJvciByZWNvdmVyeQpzZCA0OjA6MDow OiBzY3NpOiBEZXZpY2Ugb2ZmbGluZWQgLSBub3QgcmVhZHkgYWZ0ZXIgZXJyb3IgcmVjb3ZlcnkK c2QgNDowOjA6MDogc2NzaTogRGV2aWNlIG9mZmxpbmVkIC0gbm90IHJlYWR5IGFmdGVyIGVycm9y IHJlY292ZXJ5CgoJUmVnYXJkcywKCglKS0IKCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0KVGhpcyBTRi5uZXQg ZW1haWwgaXMgc3BvbnNvcmVkIGJ5OiBTcGx1bmsgSW5jLgpTdGlsbCBncmVwcGluZyB0aHJvdWdo IGxvZyBmaWxlcyB0byBmaW5kIHByb2JsZW1zPyAgU3RvcC4KTm93IFNlYXJjaCBsb2cgZXZlbnRz IGFuZCBjb25maWd1cmF0aW9uIGZpbGVzIHVzaW5nIEFKQVggYW5kIGEgYnJvd3Nlci4KRG93bmxv YWQgeW91ciBGUkVFIGNvcHkgb2YgU3BsdW5rIG5vdyA+PiBodHRwOi8vZ2V0LnNwbHVuay5jb20v Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCklzY3NpdGFy Z2V0LWRldmVsIG1haWxpbmcgbGlzdApJc2NzaXRhcmdldC1kZXZlbEBsaXN0cy5zb3VyY2Vmb3Jn ZS5uZXQKaHR0cHM6Ly9saXN0cy5zb3VyY2Vmb3JnZS5uZXQvbGlzdHMvbGlzdGluZm8vaXNjc2l0 YXJnZXQtZGV2ZWwK From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?QkVSVFJBTkQgSm/Dq2w=?= Date: Fri, 19 Oct 2007 20:49:25 +0000 Subject: Re: [BUG] Raid1/5 over iSCSI trouble Message-Id: <47191855.4020402@systella.fr> List-Id: References: <4714BB92.7040701@systella.fr> <47161CE3.80909@systella.fr> <47181CB2.1060602@tmr.com> <471864F8.9010209@systella.fr> <1192809103.30976.11.camel@dwillia2-linux.ch.intel.com> <4718DE66.8000905@tmr.com> <471916B5.6080709@systella.fr> In-Reply-To: <471916B5.6080709@systella.fr> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: Bill Davidsen Cc: linux-raid@vger.kernel.org, sparclinux@vger.kernel.org, Dan Williams , iscsitarget-devel@lists.sourceforge.net BERTRAND Joël wrote: > Bill Davidsen wrote: >> Dan Williams wrote: >>> On Fri, 2007-10-19 at 01:04 -0700, BERTRAND Joël wrote: >>> >>>> I run for 12 hours some dd's (read and write in nullio) >>>> between >>>> initiator and target without any disconnection. Thus iSCSI code seems >>>> to >>>> be robust. Both initiator and target are alone on a single gigabit >>>> ethernet link (without any switch). I'm investigating... >>>> >>> >>> Can you reproduce on 2.6.22? >>> >>> Also, I do not think this is the cause of your failure, but you have >>> CONFIG_DMA_ENGINE=y in your config. Setting this to 'n' will compile >>> out the unneeded checks for offload engines in async_memcpy and >>> async_xor. >> >> Given that offload engines are far less tested code, I think this is a >> very good thing to try! > > I'm trying wihtout CONFIG_DMA_ENGINE=y. istd1 only uses 40% of one > CPU when I rebuild my raid1 array. 1% of this array was now > resynchronized without any hang. > > Root gershwin:[/usr/scripts] > cat /proc/mdstat > Personalities : [raid1] [raid6] [raid5] [raid4] > md7 : active raid1 sdi1[2] md_d0p1[0] > 1464725632 blocks [2/1] [U_] > [>....................] recovery = 1.0% (15705536/1464725632) > finish03.9min speed!875K/sec Same result... connection2:0: iscsi: detected conn error (1011) session2: iscsi: session recovery timed out after 120 secs sd 4:0:0:0: scsi: Device offlined - not ready after error recovery sd 4:0:0:0: scsi: Device offlined - not ready after error recovery sd 4:0:0:0: scsi: Device offlined - not ready after error recovery sd 4:0:0:0: scsi: Device offlined - not ready after error recovery sd 4:0:0:0: scsi: Device offlined - not ready after error recovery sd 4:0:0:0: scsi: Device offlined - not ready after error recovery sd 4:0:0:0: scsi: Device offlined - not ready after error recovery Regards, JKB