Just realized there is a file called superblock in the ceph directory. ceph-1 and ceph-2's superblock file is identical, ceph-6 and ceph-7 are identical, but not between the two groups. When I originally created the OSDs, I created ceph-0 through 5. Can superblock file be copied over from ceph-1 to ceph-0?
Hmm.. it appears to be doing something in the background even though osd.0 is down. ceph health output is changing!
# ceph health
HEALTH_ERR 40 pgs are stuck inactive for more than 300 seconds; 14 pgs backfill_wait; 21 pgs degraded; 10 pgs down; 2 pgs inconsistent; 10 pgs peering; 3 pgs recovering; 2 pgs recovery_wait; 30 pgs stale; 21 pgs stuck degraded; 10 pgs stuck inactive; 30 pgs stuck stale; 45 pgs stuck unclean; 16 pgs stuck undersized; 16 pgs undersized; 2 requests are blocked > 32 sec; recovery 221826/2473662 objects degraded (8.968%); recovery 254711/2473662 objects misplaced (10.297%); recovery 103/2251966 unfound (0.005%); 7 scrub errors; mds cluster is degraded; no legacy OSD present but 'sortbitwise' flag is not set
Regards,
Hong
On Friday, September 1, 2017 10:37 PM, hjcho616 <hjcho616@xxxxxxxxx> wrote:
Tried connecting recovered osd. Looks like some of the files in the lost+found are super blocks. Below is the log. What can I do about this?
2017-09-01 22:27:27.634228 7f68837e5800 0 set uid:gid to 1001:1001 (ceph:ceph)
2017-09-01 22:27:27.634245 7f68837e5800 0 ceph version 10.2.9 (2ee413f77150c0f375ff6f10edd6c8f9c7d060d0), process ceph-osd, pid 5432
2017-09-01 22:27:27.635456 7f68837e5800 0 pidfile_write: ignore empty --pid-file
2017-09-01 22:27:27.646849 7f68837e5800 0 filestore(/var/lib/ceph/osd/ceph-0) backend xfs (magic 0x58465342)
2017-09-01 22:27:27.647077 7f68837e5800 0 genericfilestorebackend(/var/lib/ceph/osd/ceph-0) detect_features: FIEMAP ioctl is disabled via 'filestore fiemap' config option
2017-09-01 22:27:27.647080 7f68837e5800 0 genericfilestorebackend(/var/lib/ceph/osd/ceph-0) detect_features: SEEK_DATA/SEEK_HOLE is disabled via 'filestore seek data hole' config option
2017-09-01 22:27:27.647091 7f68837e5800 0 genericfilestorebackend(/var/lib/ceph/osd/ceph-0) detect_features: splice is supported
2017-09-01 22:27:27.678937 7f68837e5800 0 genericfilestorebackend(/var/lib/ceph/osd/ceph-0) detect_features: syncfs(2) syscall fully supported (by glibc and kernel)
2017-09-01 22:27:27.679044 7f68837e5800 0 xfsfilestorebackend(/var/lib/ceph/osd/ceph-0) detect_feature: extsize is disabled by conf
2017-09-01 22:27:27.680718 7f68837e5800 1 leveldb: Recovering log #28054
2017-09-01 22:27:27.804501 7f68837e5800 1 leveldb: Delete type=0 #28054
2017-09-01 22:27:27.804579 7f68837e5800 1 leveldb: Delete type=3 #28053
2017-09-01 22:27:35.586725 7f68837e5800 0 filestore(/var/lib/ceph/osd/ceph-0) mount: enabling WRITEAHEAD journal mode: checkpoint is not enabled
2017-09-01 22:27:35.587689 7f68837e5800 1 journal _open /var/lib/ceph/osd/ceph-0/journal fd 18: 9998729216 bytes, block size 4096 bytes, directio = 1, aio = 1
2017-09-01 22:27:35.589631 7f68837e5800 1 journal _open /var/lib/ceph/osd/ceph-0/journal fd 18: 9998729216 bytes, block size 4096 bytes, directio = 1, aio = 1
2017-09-01 22:27:35.590041 7f68837e5800 1 filestore(/var/lib/ceph/osd/ceph-0) upgrade
2017-09-01 22:27:35.590149 7f68837e5800 -1 filestore(/var/lib/ceph/osd/ceph-0) could not find #-1:7b3f43c4:::osd_superblock:0# in index: (2) No such file or directory
2017-09-01 22:27:35.590158 7f68837e5800 -1 osd.0 0 OSD::init() : unable to read osd superblock
2017-09-01 22:27:35.590547 7f68837e5800 1 journal close /var/lib/ceph/osd/ceph-0/journal
2017-09-01 22:27:35.611595 7f68837e5800 -1 ^[[0;31m ** ERROR: osd init failed: (22) Invalid argument^[[0m
Recovered drive is mounted on /var/lib/ceph/osd/ceph-0.
# df
Filesystem 1K-blocks Used Available Use% Mounted on
udev 10240 0 10240 0% /dev
tmpfs 1584780 9172 1575608 1% /run
/dev/sda1 15247760 9319048 5131120 65% /
tmpfs 3961940 0 3961940 0% /dev/shm
tmpfs 5120 0 5120 0% /run/lock
tmpfs 3961940 0 3961940 0% /sys/fs/cgroup
/dev/sdb1 1952559676 634913968 1317645708 33% /var/lib/ceph/osd/ceph-0
/dev/sde1 1952559676 640365952 1312193724 33% /var/lib/ceph/osd/ceph-6
/dev/sdd1 1952559676 712018768 1240540908 37% /var/lib/ceph/osd/ceph-2
/dev/sdc1 1952559676 755827440 1196732236 39% /var/lib/ceph/osd/ceph-1
/dev/sdf1 312417560 42538060 269879500 14% /var/lib/ceph/osd/ceph-7
tmpfs 792392 0 792392 0% /run/user/0
# cd /var/lib/ceph/osd/ceph-0
# ls
activate.monmap current journal_uuid magic superblock whoami
active fsid keyring ready sysvinit
ceph_fsid journal lost+found store_version type
Regards,
Hong
On Friday, September 1, 2017 2:59 PM, hjcho616 <hjcho616@xxxxxxxxx> wrote:
Found the partition, wasn't able to mount the partition right away... Did a xfs_repair on that drive.
Got bunch of messages like this.. =(
entry "100000a89fd.00000000__head_AE319A25__0" in shortform directory 845908970 references non-existent inode 605294241
junking entry "100000a89fd.00000000__head_AE319A25__0" in directory inode 845908970
Was able to mount. lost+found has lots of files there. =P Running du seems to show OK files in current directory.
Will it be safe to attach this one back to the cluster? Is there a way to specify to use this drive if the data is missing? =) Or am I being paranoid? Just plug it? =)
Regards,
Hong
On Friday, September 1, 2017 9:01 AM, hjcho616 <hjcho616@xxxxxxxxx> wrote:
Looks like it has been rescued... Only 1 error as we saw before in the smart log!
# ddrescue -f /dev/sda /dev/sdc ./rescue.log
GNU ddrescue 1.21
Press Ctrl-C to interrupt
ipos: 1508 GB, non-trimmed: 0 B, current rate: 0 B/s
opos: 1508 GB, non-scraped: 0 B, average rate: 88985 kB/s
non-tried: 0 B, errsize: 4096 B, run time: 6h 14m 40s
rescued: 2000 GB, errors: 1, remaining time: n/a
percent rescued: 99.99% time since last successful read: 39s
Finished
Still missing partition in the new drive. =P I found this util called testdisk for broken partition tables. Will try that tonight. =P
Regards,
Hong
On Wednesday, August 30, 2017 9:18 AM, Ronny Aasen <ronny+ceph-users@xxxxxxxx> wrote:
On 30.08.2017 15:32, Steve Taylor
wrote:
I'm not familiar with dd_rescue, but I've just been reading
about it. I'm not seeing any features that would be beneficial
in this scenario that aren't also available in dd. What specific
features give it "really a far better chance
of restoring a copy of your disk" than dd? I'm always interested
in learning about new recovery tools.
i see i wrote dd_rescue from old habit, but the package one should use on debian is gddrescue or also called gnu ddrecue.
this page have some details on the differences on dd vs the ddrescue variants.
http://www.toad.com/gnu/sysadmin/index.html#ddrescue
kind regards
Ronny Aasen
380 Data Drive Suite 300 | Draper | Utah | 84020
Office: 801.871.2799 |
If you are not the intended recipient of this message or received it erroneously, please notify the sender and delete it, together with any attachments, and be advised that any dissemination or copying of this message is prohibited.
On Tue, 2017-08-29 at 21:49 +0200, Willem Jan Withagen wrote:On 29-8-2017 19:12, Steve Taylor wrote:Hong, Probably your best chance at recovering any data without special, expensive, forensic procedures is to perform a dd from /dev/sdb to somewhere else large enough to hold a full disk image and attempt to repair that. You'll want to use 'conv=noerror' with your dd command since your disk is failing. Then you could either re-attach the OSD from the new source or attempt to retrieve objects from the filestore on it.Like somebody else already pointed out In problem "cases like disk, use dd_rescue. It has really a far better chance of restoring a copy of your disk --WjWI have actually done this before by creating an RBD that matches the disk size, performing the dd, running xfs_repair, and eventually adding it back to the cluster as an OSD. RBDs as OSDs is certainly a temporary arrangement for repair only, but I'm happy to report that it worked flawlessly in my case. I was able to weight the OSD to 0, offload all of its data, then remove it for a full recovery, at which point I just deleted the RBD. The possibilities afforded by Ceph inception are endless. ☺ Steve Taylor | Senior Software Engineer | StorageCraft Technology Corporation 380 Data Drive Suite 300 | Draper | Utah | 84020 Office: 801.871.2799 | If you are not the intended recipient of this message or received it erroneously, please notify the sender and delete it, together with any attachments, and be advised that any dissemination or copying of this message is prohibited. On Mon, 2017-08-28 at 23:17 +0100, Tomasz Kusmierz wrote:Rule of thumb with batteries is: - more “proper temperature” you run them at the more life you get out of them - more battery is overpowered for your application the longer it will survive. Get your self a LSI 94** controller and use it as HBA and you will be fine. but get MORE DRIVES !!!!! …_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.comOn 28 Aug 2017, at 23:10, hjcho616 <hjcho616@xxxxxxxxx> wrote: Thank you Tomasz and Ronny. I'll have to order some hdd soon and try these out. Car battery idea is nice! I may try that.. =) Do they last longer? Ones that fit the UPS original battery spec didn't last very long... part of the reason why I gave up on them.. =P My wife probably won't like the idea of car battery hanging out though ha! The OSD1 (one with mostly ok OSDs, except that smart failure) motherboard doesn't have any additional SATA connectors available. Would it be safe to add another OSD host? Regards, Hong On Monday, August 28, 2017 4:43 PM, Tomasz Kusmierz <tom.kusmierz@g mail.com> wrote: Sorry for being brutal … anyway 1. get the battery for UPS ( a car battery will do as well, I’ve moded on ups in the past with truck battery and it was working like a charm :D ) 2. get spare drives and put those in because your cluster CAN NOT get out of error due to lack of space 3. Follow advice of Ronny Aasen on hot to recover data from hard drives 4 get cooling to drives or you will loose more !On 28 Aug 2017, at 22:39, hjcho616 <hjcho616@xxxxxxxxx> wrote: Tomasz, Those machines are behind a surge protector. Doesn't appear to be a good one! I do have a UPS... but it is my fault... no battery. Power was pretty reliable for a while... and UPS was just beeping every chance it had, disrupting some sleep.. =P So running on surge protector only. I am running this in home environment. So far, HDD failures have been very rare for this environment. =) It just doesn't get loaded as much! I am not sure what to expect, seeing that "unfound" and just a feeling of possibility of maybe getting OSD back made me excited about it. =) Thanks for letting me know what should be the priority. I just lack experience and knowledge in this. =) Please do continue to guide me though this. Thank you for the decode of that smart messages! I do agree that looks like it is on its way out. I would like to know how to get good portion of it back if possible. =) I think I just set the size and min_size to 1. # ceph osd lspools 0 data,1 metadata,2 rbd, # ceph osd pool set rbd size 1 set pool 2 size to 1 # ceph osd pool set rbd min_size 1 set pool 2 min_size to 1 Seems to be doing some backfilling work. # ceph health HEALTH_ERR 22 pgs are stuck inactive for more than 300 seconds; 2 pgs backfill_toofull; 74 pgs backfill_wait; 3 pgs backfilling; 108 pgs degraded; 6 pgs down; 6 pgs inconsistent; 6 pgs peering; 7 pgs recovery_wait; 16 pgs stale; 108 pgs stuck degraded; 6 pgs stuck inactive; 16 pgs stuck stale; 130 pgs stuck unclean; 101 pgs stuck undersized; 101 pgs undersized; 1 requests are blocked32 sec; recovery 1790657/4502340 objects degraded (39.772%);recovery 641906/4502340 objects misplaced (14.257%); recovery 147/2251990 unfound (0.007%); 50 scrub errors; mds cluster is degraded; no legacy OSD present but 'sortbitwise' flag is not set Regards, Hong On Monday, August 28, 2017 4:18 PM, Tomasz Kusmierz <tom.kusmierz @gmail.com> wrote: So to decode few things about your disk: 1 Raw_Read_Error_Rate 0x002f 100 100 051 Pre-fail Always - 37 37 read erros and only one sector marked as pending - fun disk :/ 181 Program_Fail_Cnt_Total 0x0022 099 099 000 Old_age Always - 35325174 So firmware has quite few bugs, that’s nice 191 G-Sense_Error_Rate 0x0022 100 100 000 Old_age Always - 2855 disk was thrown around while operational even more nice. 194 Temperature_Celsius 0x0002 047 041 000 Old_age Always - 53 (Min/Max 15/59) if your disk passes 50 you should not consider using it, high temperatures demagnetise plate layer and you will see more errors in very near future. 197 Current_Pending_Sector 0x0032 100 100 000 Old_age Always - 1 as mentioned before :) 200 Multi_Zone_Error_Rate 0x002a 100 100 000 Old_age Always - 4222 your heads keep missing tracks … bent ? I don’t even know how to comment here. generally fun drive you’ve got there … rescue as much as you can and throw it away !!!
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