Date: Fri, 25 Feb 2022 20:03:51 -0600 From: Larry Rosenman <ler@lerctr.org> To: Alexander Leidinger <Alexander@leidinger.net> Cc: Rob Wing <rob.fx907@gmail.com>, Alexander Motin <mav@freebsd.org>, Freebsd current <freebsd-current@freebsd.org> Subject: Re: ZFS PANIC: HELP. Message-ID: <d1db05269410cb5d8b0ba00b264d26e9@lerctr.org> In-Reply-To: <20220225091120.Horde.76VjoVNtr5BsqAw_5ftjpRZ@webmail.leidinger.net> References: <07c0c9c34b4a4133acab597c96867d27@lerctr.org> <95c7c326-e2f9-6e66-7b97-b9fb2671f4ad@FreeBSD.org> <1b6b2017ba69e6fda1ca237c3016ac61@lerctr.org> <a5f379a6-c2bd-f1e9-a281-bb657f3ccb75@FreeBSD.org> <6182c57bf1859482e72af78037c399e4@lerctr.org> <7abcbe88-446f-44b9-c3a7-0997d3430b57@FreeBSD.org> <2bc12c9ee3e6dd71b65079116ff2b845@lerctr.org> <5930f3d2b71c0932f903bb5b88a3c87d@lerctr.org> <e9b95fed-9a3c-623c-c046-f0a7fd609eb6@FreeBSD.org> <CAF3%2Bn_fYSHLxYGp0jUbFg8%2BPFkEJAp7QMCX2BWMk4ePrn0=1yA@mail.gmail.com> <a414d6f4ad21af3044444b22acbe42bd@lerctr.org> <CAF3%2Bn_cevarxBYMJ5%2BGeTex6C%2Be-A79TbpDL-Pd7jsWPKfu=SA@mail.gmail.com> <36d3896af19acc4fdd1712822ba9d420@lerctr.org> <9f6a8ad62fc0dbd6f3a19c7d695bd302@lerctr.org> <c2fb568ba91c61974cb439f6bda1aec3@lerctr.org> <20220225091120.Horde.76VjoVNtr5BsqAw_5ftjpRZ@webmail.leidinger.net>
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[-- Attachment #1 --] On 02/25/2022 2:11 am, Alexander Leidinger wrote: > Quoting Larry Rosenman <ler@lerctr.org> (from Thu, 24 Feb 2022 20:19:45 > -0600): > >> I tried a scrub -- it panic'd on a fatal double fault. >> >> Suggestions? > > The safest / cleanest (but not fastest) is data export and pool > re-creation. If you export dataset by dataset (instead of recursively > all), you can even see which dataset is causing the issue. In case this > per dataset export narrows down the issue and it is a dataset you don't > care about (as in: 1) no issue to recreate from scratch or 2) there is > a backup available) you could delete this (or each such) dataset and > re-create it in-place (= not re-creating the entire pool). > > Bye, > Alexander. > > http://www.Leidinger.net Alexander@Leidinger.net: PGP > 0x8F31830F9F2772BF > http://www.FreeBSD.org netchild@FreeBSD.org : PGP > 0x8F31830F9F2772BF I'm running this script: #!/bin/sh for i in $(zfs list -H | awk '{print $1}') do FS=$1 FN=$(echo ${FS} | sed -e s@/@_@g) sudo zfs send -vecLep ${FS}@REPAIR_SNAP | ssh ler@freenas.lerctr.org cat - \> $FN done How will I know a "Problem" dataset? -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 E-Mail: ler@lerctr.org US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106 [-- Attachment #2 --] <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /></head><body style='font-size: 10pt; font-family: Arial,Helvetica,sans-serif'> <p id="reply-intro">On 02/25/2022 2:11 am, Alexander Leidinger wrote:</p> <blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"> <div id="replybody1"> <div style="font-family: Arial; font-size: 14px;"> <p>Quoting Larry Rosenman <<a href="mailto:ler@lerctr.org" rel="noreferrer">ler@lerctr.org</a>> (from Thu, 24 Feb 2022 20:19:45 -0600):</p> <blockquote style="border-left: 2px solid blue; margin-left: 2px; padding-left: 12px;"> <p>I tried a scrub -- it panic'd on a fatal double fault. </p> <p>Suggestions?</p> </blockquote> <p>The safest / cleanest (but not fastest) is data export and pool re-creation. If you export dataset by dataset (instead of recursively all), you can even see which dataset is causing the issue. In case this per dataset export narrows down the issue and it is a dataset you don't care about (as in: 1) no issue to recreate from scratch or 2) there is a backup available) you could delete this (or each such) dataset and re-create it in-place (= not re-creating the entire pool).<br /><br />Bye,<br />Alexander.</p> <div><a href="http://www.Leidinger.net" target="_blank" rel="noopener noreferrer">http://www.Leidinger.net</a>; <a href="mailto:Alexander@Leidinger.net" rel="noreferrer">Alexander@Leidinger.net</a>: PGP 0x8F31830F9F2772BF<br /><a href="http://www.FreeBSD.org" target="_blank" rel="noopener noreferrer">http://www.FreeBSD.org</a> <a href="mailto:netchild@FreeBSD.org" rel="noreferrer">netchild@FreeBSD.org</a> : PGP 0x8F31830F9F2772BF</div> </div> </div> </blockquote> <p>I'm running this script:<br />#!/bin/sh<br />for i in $(zfs list -H | awk '{print $1}')<br />do<br /> FS=$1<br /> FN=$(echo ${FS} | sed -e s@/@_@g)<br /> sudo zfs send -vecLep ${FS}@REPAIR_SNAP | ssh ler@freenas.lerctr.org cat - \> $FN<br />done</p> <p><br /></p> <p>How will I know a "Problem" dataset?</p> <p><br /></p> <div id="signature"> <div class="pre" style="margin: 0; padding: 0; font-family: monospace"><span class="sig">-- <br />Larry Rosenman <a href="http://www.lerctr.org/~ler" target="_blank" rel="noopener noreferrer">http://www.lerctr.org/~ler</a><br />Phone: +1 214-642-9640 E-Mail: <a href="mailto:ler@lerctr.org">ler@lerctr.org</a><br />US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106<br /></span></div> </div> </body></html>help
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