From mboxrd@z Thu Jan 1 00:00:00 1970 From: NeilBrown Subject: Re: Is it safe to shutdown while mdadm --grow is in progress. Date: Sun, 12 Oct 2014 19:35:55 +1100 Message-ID: <20141012193555.69907c13@notabene.brown> References: <543A15A6.5010508@gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/4LQ0lGOqV7auPqne.7aSrqi"; protocol="application/pgp-signature" Return-path: In-Reply-To: <543A15A6.5010508@gmail.com> Sender: linux-raid-owner@vger.kernel.org To: Ram Ramesh Cc: Linux Raid List-Id: linux-raid.ids --Sig_/4LQ0lGOqV7auPqne.7aSrqi Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sun, 12 Oct 2014 00:46:14 -0500 Ram Ramesh wrote: > I googled this topic and got differing answers. Some old ones report=20 > horror stories and others suggest rebuild continues after reboot=20 > normally. My array is rebuilding and it will take about 6 days to=20 > complete. I am expecting bad weather in a couple of days and would like=20 > to proactively shutdown the machine and reboot. Is this safe? >=20 > If the information is already available in a clear manner, please let me= =20 > know. >=20 > uname: Linux xxx 3.13.0-37-generic #64-Ubuntu SMP Mon Sep 22 21:28:38=20 > UTC 2014 x86_64 x86_64 x86_64 GNU/Linux > mdadm - v3.2.5 - 18th May 2012 >=20 > Thanks for your help > It is certainly designed to be safe and my experience is that it is. However it is difficult to test all corner cases so it is not impossible th= at someone what quite work right. If something does go wrong: 1/ don't panic 2/ don't try to --create the array to fix it 3/ report all details to this list and I'm 99.9% sure I can get your array running again with all your data safe. But I suspect it won't come to that. NeilBrown --Sig_/4LQ0lGOqV7auPqne.7aSrqi Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIVAwUBVDo9aznsnt1WYoG5AQIsHxAAjxO5Cv3NDFSiU6OgqvzUH6GHmhwblnqF Rc5mGKcdjSKPfLVPzGE+10LhL/RwrFxymImLY/9LhzJgC180ReNMVkywAEJqt9tP kQPngKDqLkX3Z1W7RZWiAL4eReYubopLtgGePb+57JefLbalAkt5BIq+ff9bRgBN lKNKbi7ovXYVbuz+LRH7vnJ/ftkl2pngL6wFYrznfn+g2yidOOhMAN/fBzAf310X +otMq1yTtUOH6DMeV+2mj1jV/Ad4uDhLRjVn1aqA2OwYe65VaDIIN9W7KRBnBF9G 2sWU+8uC9ZWB3KwxVJuXyHz/1ooc/bYgTY+2JNM3N0JmkG9M80cZ9cwXSx/Q659t HXgEw5C2Pn0h96AKx5ynsOJHbds6xxWi+XC7sfZV993NaKvithf0X6Y/RIsscN1D 3kGbml+QYk0Nd7h/IppGjyXnfM1ZQg8qk42x9g+fB9w+69UVET2HIsV8UF49+udY AcbrZvuJMlsefBsKvIJev+nKmTP1z6wFVJuBQWzgwkysT86Wq1v2y73yi6FY7Eez tKQgAC3WhU8wtC+2IQ9M6hQ7CpI8GMC3p0IMVuKsOcOtJ32RC0JYl+GTwidYs9BE ktDMfkfePM7deYsW4VKstS8yqAbF412Zy6vJPK/8wliCgJz67qMCRxe/If+OUFUU uHIThxDqllY= =QF9N -----END PGP SIGNATURE----- --Sig_/4LQ0lGOqV7auPqne.7aSrqi--