February 27, 2018 
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*** kaipee <kaipee!~kaipee@81.128.200.210> has joined #openzfs[13:47:19] <kaipee> is it possible to expand an existing vdev mirror? (if I wanted to go from 2 disk vdev to 2 disk vdev for better redundancy[13:54:32] <monsted> "2 disk vdev to 2 disk vdev"...[13:55:29] <monsted> mirrors can be expanded "endlessly" by attaching (or detaching for that matter) more disks, for more redundancy[14:25:46] *** tozhu <tozhu!~Thunderbi@171.221.45.90> has joined #openzfs[14:29:19] *** Kurlon_ <Kurlon_!~Kurlon@98.13.72.207> has quit IRC (Ping timeout: 260 seconds)[14:40:27] *** tozhu <tozhu!~Thunderbi@171.221.45.90> has quit IRC (Ping timeout: 240 seconds)[14:48:15] *** tozhu <tozhu!~Thunderbi@171.221.45.90> has joined #openzfs[14:52:39] *** tozhu <tozhu!~Thunderbi@171.221.45.90> has quit IRC (Ping timeout: 260 seconds)[15:11:56] <DeHackEd> I do 3-way mirrors all the time. Use `zpool attach` (NOT! NOT! zpool add)[15:42:16] *** tozhu <tozhu!~Thunderbi@171.221.45.90> has joined #openzfs[15:44:46] <kaipee> monsted: is it just a matter of adding the disk and issuing zfs attach {pool} {last_device_in_mirror} {new_device}[15:47:35] <monsted> kaipee: yep[15:47:46] <kaipee> super, thanks :)[15:47:58] <monsted> mirrors can be grown and shrunk at any time[15:48:13] <monsted> (and a single disk can be mirrored)[15:48:26] <kaipee> do you happen to know if this works without issue in FreeNAS by any chance?[15:51:26] <kapsel> errors: Permanent errors have been detected in the following files: <0xffffffffffffffff>:<0x10>[15:51:36] <kapsel> if scrub does not fix that, any idea what can except to recreate the pool?[15:51:56] <kapsel> it's for a backupserver and I have the data elsewhere, but pretty time consuming to move around ~400TB :([15:52:54] <kapsel> lost a couple of disks at around the same time because of a backplane/jbod failure and have had problems with the pool ever since. scrub/resilver continues to detect checksum errors in the particular vdev that was affected by the failure.[15:59:25] <monsted> well, the checksum error would likely be what's making that "file" unavailable[16:02:08] *** Yada <Yada!~Yada@37.171.23.36> has joined #openzfs[16:07:37] *** Yada <Yada!~Yada@37.171.23.36> has quit IRC (Quit: Yada)[16:27:23] <monsted> but who knows what 0xffff.. refers to :)[16:31:35] <cbreak> monsted: probably either a file that is no longer known by name, or some meta data[16:31:56] <monsted> zdb can probably tell[16:45:05] *** tozhu <tozhu!~Thunderbi@171.221.45.90> has quit IRC (Ping timeout: 240 seconds)[16:51:09] *** Kurlon <Kurlon!~Kurlon@bidd-pub-03.gwi.net> has joined #openzfs[16:53:03] *** Yada <Yada!~Yada@37.171.23.36> has joined #openzfs[17:12:15] *** Yada <Yada!~Yada@37.171.23.36> has quit IRC (Quit: Yada)[17:59:36] *** disposable2 <disposable2!~Thunderbi@213.164.31.89> has quit IRC (Quit: disposable2)[18:26:41] *** elxa <elxa!~elxa@2a01:5c0:e17d:3f81:fb07:76ab:8a89:e96d> has joined #openzfs[18:33:57] *** btibble <btibble!~brantibbl@c-24-72-255-52.ni.gigamonster.net> has quit IRC (Ping timeout: 240 seconds)[18:54:57] *** kaipee <kaipee!~kaipee@81.128.200.210> has quit IRC (Quit: Leaving)[18:56:10] *** m-i_ <m-i_!~m-i_@2a01cb0803d61900153d030ede99c862.ipv6.abo.wanadoo.fr> has quit IRC (Ping timeout: 256 seconds)[18:57:00] *** m-i_ <m-i_!~m-i_@LFbn-IDF3-1-372-145.w83-199.abo.wanadoo.fr> has joined #openzfs[18:58:43] *** elxa <elxa!~elxa@2a01:5c0:e17d:3f81:fb07:76ab:8a89:e96d> has quit IRC (Quit: Leaving)[19:09:01] *** elxa <elxa!~elxa@2a01:5c0:e17d:3f81:fb07:76ab:8a89:e96d> has joined #openzfs[19:09:17] *** Izorkin <Izorkin!~Miranda@91.216.72.209> has quit IRC (Quit: Miranda IM! Smaller, Faster, Easier. http://miranda-im.org)[19:25:12] *** chrkl <chrkl!~chrkl@p57ADD601.dip0.t-ipconnect.de> has quit IRC (Ping timeout: 245 seconds)[19:25:58] *** chrkl <chrkl!~chrkl@p4FD1456B.dip0.t-ipconnect.de> has joined #openzfs[19:30:14] *** Izorkin <Izorkin!~Miranda@91.216.72.209> has joined #openzfs[19:40:51] *** m-i_ <m-i_!~m-i_@LFbn-IDF3-1-372-145.w83-199.abo.wanadoo.fr> has quit IRC (Remote host closed the connection)[19:41:27] *** m-i_ <m-i_!~m-i_@2a01cb0803d61900b1aef1a99daafbbc.ipv6.abo.wanadoo.fr> has joined #openzfs[19:44:30] *** btibble <btibble!~brantibbl@c-24-72-255-52.ni.gigamonster.net> has joined #openzfs[19:45:05] *** Botanic <Botanic!~Botanic@tita/admin/Botanic> has joined #openzfs[19:46:14] *** m-i_ <m-i_!~m-i_@2a01cb0803d61900b1aef1a99daafbbc.ipv6.abo.wanadoo.fr> has quit IRC (Remote host closed the connection)[19:46:27] *** m-i_ <m-i_!~m-i_@2a01cb0803d61900b1aef1a99daafbbc.ipv6.abo.wanadoo.fr> has joined #openzfs[19:48:25] *** michaeldexter <michaeldexter!~michaelde@c-73-157-221-98.hsd1.or.comcast.net> has joined #openzfs[19:51:13] *** wiedi <wiedi!~wiedi@ip5b409739.dynamic.kabel-deutschland.de> has quit IRC (Quit: ^Z)[20:10:45] *** Izorkin <Izorkin!~Miranda@91.216.72.209> has quit IRC (Quit: Miranda IM! Smaller, Faster, Easier. http://miranda-im.org)[20:13:32] *** jwpierce3 <jwpierce3!~jwpierce3@2604:2d80:840f:0:fc10:9863:7f2f:863f> has quit IRC (Ping timeout: 245 seconds)[20:21:09] *** m-i_ <m-i_!~m-i_@2a01cb0803d61900b1aef1a99daafbbc.ipv6.abo.wanadoo.fr> has quit IRC (Remote host closed the connection)[20:21:42] *** m-i_ <m-i_!~m-i_@2a01cb0803d61900b1aef1a99daafbbc.ipv6.abo.wanadoo.fr> has joined #openzfs[20:29:27] *** cbreak <cbreak!~cbreak@46-126-120-226.dynamic.hispeed.ch> has quit IRC (Ping timeout: 265 seconds)[20:29:45] *** cbreak <cbreak!~cbreak@46-126-120-226.dynamic.hispeed.ch> has joined #openzfs[20:34:25] *** m-i_ <m-i_!~m-i_@2a01cb0803d61900b1aef1a99daafbbc.ipv6.abo.wanadoo.fr> has quit IRC (Remote host closed the connection)[20:34:38] *** m-i_ <m-i_!~m-i_@2a01cb0803d61900b1aef1a99daafbbc.ipv6.abo.wanadoo.fr> has joined #openzfs[20:52:33] *** beardface <beardface!~bearface@unaffiliated/bearface> has joined #openzfs[21:08:15] *** efm <efm!~efm@vpn.tummy.com> has quit IRC (Remote host closed the connection)[21:09:04] *** efm <efm!~efm@66.35.36.132> has joined #openzfs[21:20:13] *** efm <efm!~efm@66.35.36.132> has quit IRC (Ping timeout: 256 seconds)[21:21:15] *** efm <efm!~efm@vpn.tummy.com> has joined #openzfs[21:21:25] *** cbreak <cbreak!~cbreak@46-126-120-226.dynamic.hispeed.ch> has quit IRC (Read error: Connection reset by peer)[21:21:44] *** cbreak <cbreak!~cbreak@46-126-120-226.dynamic.hispeed.ch> has joined #openzfs[21:30:18] *** efm <efm!~efm@vpn.tummy.com> has quit IRC (Ping timeout: 256 seconds)[21:36:52] *** Izorkin <Izorkin!~Miranda@91.216.72.209> has joined #openzfs[21:58:23] <problame> A few days ago, I reported about zfs destroys of snapshots and bookmarks taking 5--10s on a pool with ca 8000 snapshots, 300 per filesystem. I did some profiling in the meantime: the commands did a bit of computation in the kernel and then went to sleep in dsl_sync_task, for `dsl_bookmark_destroy`, `dsl_dataset_snapshot`, `dsl_destroy_snapshots_nvl`, etc. Is this expected behavior?[22:02:59] <DHE> it is normal for administrative tools to hang for a second in a sync function because the tool waits for the pool to do a transaction flush to disk before returning.[22:03:13] <DHE> snapshots do the same thing, but the bulk delete options allows it to be less of an impact[22:10:21] <problame> DHE: ok, I guess that makes sense. The bulk delete options only work for ranges of snapshots, right? I need to delete a random amount of snapshots. My current solution is to spawn N zfs destroys in parallel. They all block more or less instantly, thus don't cause a spike in load. Do you know a better way?[22:12:18] *** efm <efm!~efm@vpn.tummy.com> has joined #openzfs[22:54:07] *** mmlb <mmlb!~mmlb@c-73-245-40-158.hsd1.fl.comcast.net> has quit IRC (Ping timeout: 248 seconds)[23:06:31] *** Kurlon_ <Kurlon_!~Kurlon@bidd-pub-04.gwi.net> has joined #openzfs[23:09:35] *** Kurlon <Kurlon!~Kurlon@bidd-pub-03.gwi.net> has quit IRC (Ping timeout: 256 seconds)[23:11:22] *** Kurlon_ <Kurlon_!~Kurlon@bidd-pub-04.gwi.net> has quit IRC (Ping timeout: 265 seconds)[23:15:15] *** cbreak <cbreak!~cbreak@46-126-120-226.dynamic.hispeed.ch> has quit IRC (Read error: Connection reset by peer)[23:15:29] *** cbreak <cbreak!~cbreak@46-126-120-226.dynamic.hispeed.ch> has joined #openzfs[23:25:34] *** elxa <elxa!~elxa@2a01:5c0:e17d:3f81:fb07:76ab:8a89:e96d> has quit IRC (Quit: Leaving)[23:38:09] <DHE> problame: ZFS channel programs (ZCP) is an upcoming feature where you can write a script that's run in the OS itself and can issue multiple destroy commands in parallel. so that makes many possibilities[23:38:19] <DHE> actually bookmark destruction might benefit in much the same way...[23:49:38] *** tozhu <tozhu!~Thunderbi@171.221.45.90> has joined #openzfs[23:51:06] *** Kurlon <Kurlon!~Kurlon@98.13.72.207> has joined #openzfs[23:51:57] *** cbreak <cbreak!~cbreak@46-126-120-226.dynamic.hispeed.ch> has quit IRC (Ping timeout: 240 seconds)[23:52:37] *** cbreak <cbreak!~cbreak@46-126-120-226.dynamic.hispeed.ch> has joined #openzfs[23:56:30] *** tozhu <tozhu!~Thunderbi@171.221.45.90> has quit IRC (Ping timeout: 256 seconds)