I have not documented this yet - I will send you the steps tomorrow.
Regards,
Nithya
On 30 July 2018 at 20:23, Rusty Bower <rusty@xxxxxxxxxxxxxx> wrote:
That would be awesome. Where can I find these?RustySent from my iPhoneHi Rusty,Sorry for the delay getting back to you. I had a quick look at the rebalance logs - it looks like the estimates are based on the time taken to rebalance the smaller files.We do have a scripting option where we can use virtual xattrs to trigger file migration from a mount point. That would speed things up.Regards,NithyaOn 28 July 2018 at 07:11, Rusty Bower <rusty@xxxxxxxxxxxxxx> wrote:Just wanted to ping this to see if you guys had any thoughts, or other scripts I can run for this stuff. It's still predicting another 90 days to rebalance this, and performance is basically garbage while it rebalances.RustyOn Mon, Jul 23, 2018 at 10:19 AM, Rusty Bower <rusty@xxxxxxxxxxxxxx> wrote:datanode03 is the newest brickthe bricks had gotten pretty full, which I think might be part of the issue:- datanode01 /dev/sda1 51T 48T 3.3T 94% /mnt/data- datanode02 /dev/sda1 51T 48T 3.4T 94% /mnt/data- datanode03 /dev/md0 128T 4.6T 123T 4% /mnt/dataeach of the bricks are on a completely separate disk from the OSI'll shoot you the log files offline :)Thanks!RustyOn Mon, Jul 23, 2018 at 3:12 AM, Nithya Balachandran <nbalacha@xxxxxxxxxx> wrote:Hi Rusty,Sorry I took so long to get back to you.Which is the newly added brick? I see datanode02 has not picked up any files for migration which is odd.How full are the individual bricks (df -h ) output.Is each of your bricks in a separate partition?Can you send me the rebalance logs from all 3 nodes (offline if you prefer)?We can try using scripts to speed up the rebalance if you prefer.Regards,NithyaOn 16 July 2018 at 22:06, Rusty Bower <rusty@xxxxxxxxxxxxxx> wrote:Thanks for the reply Nithya.1. glusterfs 4.1.12. Volume Name: dataType: DistributeVolume ID: 294d95ce-0ff3-4df9-bd8c-a52fc50442ba Status: StartedSnapshot Count: 0Number of Bricks: 3Transport-type: tcpBricks:Brick1: datanode01:/mnt/data/bricks/data Brick2: datanode02:/mnt/data/bricks/data Brick3: datanode03:/mnt/data/bricks/data Options Reconfigured:performance.readdir-ahead: on3.Node Rebalanced-files size scanned failures skipped status run time in h:m:s--------- ----------- ----------- ----------- ----------- ----------- ------------ --------------localhost 36822 11.3GB 50715 0 0 in progress 26:46:17datanode02 0 0Bytes 2852 0 0 in progress 26:46:16datanode03 3128 513.7MB 11442 0 3128 in progress 26:46:17Estimated time left for rebalance to complete : > 2 months. Please try again later.volume rebalance: data: success4. Directory structure is basically an rsync backup of some old systems as well as all of my personal media. I can elaborate more, but it's a pretty standard filesystem.5. In some folders there might be up to like 12-15 levels of directories (especially the backups)6. I'm honestly not sure, I can try to scrounge this number up7. My guess would be > 100k8. Most files are pretty large (media files), but there's a lot of small files (metadata and configuration files) as wellI've also appended a (moderately sanitized) snippet of the rebalance log (let me know if you need more)[2018-07-16 17:37:59.979003] I [MSGID: 0] [dht-rebalance.c:1799:dht_migrate_file] 0-data-dht: destination for file - /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/2040036.img.xm l is changed to - data-client-2 [2018-07-16 17:38:00.004262] I [MSGID: 109022] [dht-rebalance.c:2274:dht_migrate_file] 0-data-dht: completed migration of /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/2112002.img.xm l from subvolume data-client-0 to data-client-2 [2018-07-16 17:38:00.725582] I [dht-rebalance.c:4982:gf_defrag_get_estimates_based_on_size] 0-glusterfs: TIME: (size) total_processed=43108305980 tmp_cnt = 55419279917056,rate_processed= 446597.869797, elapsed = 96526.000000 [2018-07-16 17:38:00.725641] I [dht-rebalance.c:5130:gf_defrag_status_get] 0-glusterfs: TIME: Estimated total time to complete (size)= 124092127 seconds, seconds left = 123995601 [2018-07-16 17:38:00.725709] I [MSGID: 109028] [dht-rebalance.c:5210:gf_defrag_status_get] 0-glusterfs: Rebalance is in progress. Time taken is 96526.00 secs [2018-07-16 17:38:00.725738] I [MSGID: 109028] [dht-rebalance.c:5214:gf_defrag_status_get] 0-glusterfs: Files migrated: 36876, size: 12270259289, lookups: 50715, failures: 0, skipped: 0 [2018-07-16 17:38:02.769121] I [dht-rebalance.c:4982:gf_defrag_get_estimates_based_on_size] 0-glusterfs: TIME: (size) total_processed=43108305980 tmp_cnt = 55419279917056,rate_processed= 446588.616567, elapsed = 96528.000000 [2018-07-16 17:38:02.769207] I [dht-rebalance.c:5130:gf_defrag_status_get] 0-glusterfs: TIME: Estimated total time to complete (size)= 124094698 seconds, seconds left = 123998170 [2018-07-16 17:38:02.769263] I [MSGID: 109028] [dht-rebalance.c:5210:gf_defrag_status_get] 0-glusterfs: Rebalance is in progress. Time taken is 96528.00 secs [2018-07-16 17:38:02.769286] I [MSGID: 109028] [dht-rebalance.c:5214:gf_defrag_status_get] 0-glusterfs: Files migrated: 36876, size: 12270259289, lookups: 50715, failures: 0, skipped: 0 [2018-07-16 17:38:03.410469] I [dht-rebalance.c:1645:dht_migrate_file] 0-data-dht: /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/9201002.img.xm l: attempting to move from data-client-0 to data-client-2 [2018-07-16 17:38:03.416127] I [MSGID: 109022] [dht-rebalance.c:2274:dht_migrate_file] 0-data-dht: completed migration of /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/2040036.img.xm l from subvolume data-client-0 to data-client-2 [2018-07-16 17:38:04.738885] I [dht-rebalance.c:1645:dht_migrate_file] 0-data-dht: /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/9110012.img.xm l: attempting to move from data-client-0 to data-client-2 [2018-07-16 17:38:04.745722] I [MSGID: 109022] [dht-rebalance.c:2274:dht_migrate_file] 0-data-dht: completed migration of /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/9201002.img.xm l from subvolume data-client-0 to data-client-2 [2018-07-16 17:38:04.812368] I [dht-rebalance.c:4982:gf_defrag_get_estimates_based_on_size] 0-glusterfs: TIME: (size) total_processed=43108308134 tmp_cnt = 55419279917056,rate_processed= 446579.386035, elapsed = 96530.000000 [2018-07-16 17:38:04.812417] I [dht-rebalance.c:5130:gf_defrag_status_get] 0-glusterfs: TIME: Estimated total time to complete (size)= 124097263 seconds, seconds left = 124000733 [2018-07-16 17:38:04.812465] I [MSGID: 109028] [dht-rebalance.c:5210:gf_defrag_status_get] 0-glusterfs: Rebalance is in progress. Time taken is 96530.00 secs [2018-07-16 17:38:04.812489] I [MSGID: 109028] [dht-rebalance.c:5214:gf_defrag_status_get] 0-glusterfs: Files migrated: 36877, size: 12270261443, lookups: 50715, failures: 0, skipped: 0 [2018-07-16 17:38:04.992413] I [dht-rebalance.c:1645:dht_migrate_file] 0-data-dht: /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/2050000.img.xm l: attempting to move from data-client-0 to data-client-2 [2018-07-16 17:38:04.994122] I [MSGID: 109022] [dht-rebalance.c:2274:dht_migrate_file] 0-data-dht: completed migration of /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/9110012.img.xm l from subvolume data-client-0 to data-client-2 [2018-07-16 17:38:06.855618] I [dht-rebalance.c:4982:gf_defrag_get_estimates_based_on_size] 0-glusterfs: TIME: (size) total_processed=43108318798 tmp_cnt = 55419279917056,rate_processed= 446570.244043, elapsed = 96532.000000 [2018-07-16 17:38:06.855719] I [dht-rebalance.c:5130:gf_defrag_status_get] 0-glusterfs: TIME: Estimated total time to complete (size)= 124099804 seconds, seconds left = 124003272 [2018-07-16 17:38:06.855770] I [MSGID: 109028] [dht-rebalance.c:5210:gf_defrag_status_get] 0-glusterfs: Rebalance is in progress. Time taken is 96532.00 secs [2018-07-16 17:38:06.855793] I [MSGID: 109028] [dht-rebalance.c:5214:gf_defrag_status_get] 0-glusterfs: Files migrated: 36879, size: 12270266602, lookups: 50715, failures: 0, skipped: 0 [2018-07-16 17:38:08.511064] I [dht-rebalance.c:1645:dht_migrate_file] 0-data-dht: /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/9201055.img.xm l: attempting to move from data-client-0 to data-client-2 [2018-07-16 17:38:08.533029] I [MSGID: 109022] [dht-rebalance.c:2274:dht_migrate_file] 0-data-dht: completed migration of /this/is/a/file/path/that/exis ts/wz/wz/Npc.wz/2050000.img.xm l from subvolume data-client-0 to data-client-2 [2018-07-16 17:38:08.899708] I [dht-rebalance.c:4982:gf_defrag_get_estimates_based_on_size] 0-glusterfs: TIME: (size) total_processed=43108318798 tmp_cnt = 55419279917056,rate_processed= 446560.991961, elapsed = 96534.000000 [2018-07-16 17:38:08.899791] I [dht-rebalance.c:5130:gf_defrag_status_get] 0-glusterfs: TIME: Estimated total time to complete (size)= 124102375 seconds, seconds left = 124005841 [2018-07-16 17:38:08.899842] I [MSGID: 109028] [dht-rebalance.c:5210:gf_defrag_status_get] 0-glusterfs: Rebalance is in progress. Time taken is 96534.00 secs [2018-07-16 17:38:08.899865] I [MSGID: 109028] [dht-rebalance.c:5214:gf_defrag_status_get] 0-glusterfs: Files migrated: 36879, size: 12270266602, lookups: 50715, failures: 0, skipped: 0 On Mon, Jul 16, 2018 at 7:37 AM, Nithya Balachandran <nbalacha@xxxxxxxxxx> wrote:If possible, please send the rebalance logs as well.On 16 July 2018 at 10:14, Nithya Balachandran <nbalacha@xxxxxxxxxx> wrote:Hi Rusty,We need the following information:
- The exact gluster version you are running
- gluster volume info <volname>
- gluster rebalance status
- Information on the directory structure and file locations on your volume.
- How many levels of directories
- How many files and directories in each level
- How many directories and files in total (a rough estimate)
- Average file size
Please note that having a rebalance running in the background should not affect your volume access in any way. However I would like to know why only 6000 files have been scanned in 6 hours.Regards,NithyaOn 16 July 2018 at 06:13, Rusty Bower <rusty@xxxxxxxxxxxxxx> wrote:______________________________Hey folks,I just added a new brick to my existing gluster volume, but gluster volume rebalance data status is telling me the following: Estimated time left for rebalance to complete : > 2 months. Please try again later.I already did a fix-mapping, but this thing is absolutely crawling trying to rebalance everything (last estimate was ~40 years)Any thoughts on if this is a bug, or ways to speed this up? It's taking ~6 hours to scan 6000 files, which seems unreasonably slow.ThanksRusty_________________
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