[Gluster-users] Rebalance taking > 2 months
Nithya Balachandran
nbalacha at redhat.com
Mon Jul 23 08:12:15 UTC 2018
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,
Nithya
On 16 July 2018 at 22:06, Rusty Bower <rusty at rustybower.com> wrote:
> Thanks for the reply Nithya.
>
> 1. glusterfs 4.1.1
>
> 2. Volume Name: data
> Type: Distribute
> Volume ID: 294d95ce-0ff3-4df9-bd8c-a52fc50442ba
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 3
> Transport-type: tcp
> Bricks:
> Brick1: datanode01:/mnt/data/bricks/data
> Brick2: datanode02:/mnt/data/bricks/data
> Brick3: datanode03:/mnt/data/bricks/data
> Options Reconfigured:
> performance.readdir-ahead: on
>
> 3.
> Node Rebalanced-files size
> scanned failures skipped status run time in
> h:m:s
> --------- ----------- -----------
> ----------- ----------- ----------- ------------
> --------------
> localhost 36822 11.3GB
> 50715 0 0 in progress 26:46:17
> datanode02 0 0Bytes
> 2852 0 0 in progress 26:46:16
> datanode03 3128 513.7MB
> 11442 0 3128 in progress 26:46:17
> Estimated time left for rebalance to complete : > 2 months. Please try
> again later.
> volume rebalance: data: success
>
> 4. 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 up
>
> 7. My guess would be > 100k
>
> 8. Most files are pretty large (media files), but there's a lot of small
> files (metadata and configuration files) as well
>
> I'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/
> exists/wz/wz/Npc.wz/2040036.img.xml 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/
> exists/wz/wz/Npc.wz/2112002.img.xml 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/exists/wz/wz/Npc.wz/9201002.img.xml:
> 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/
> exists/wz/wz/Npc.wz/2040036.img.xml 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/exists/wz/wz/Npc.wz/9110012.img.xml:
> 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/
> exists/wz/wz/Npc.wz/9201002.img.xml 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/exists/wz/wz/Npc.wz/2050000.img.xml:
> 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/
> exists/wz/wz/Npc.wz/9110012.img.xml 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/exists/wz/wz/Npc.wz/9201055.img.xml:
> 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/
> exists/wz/wz/Npc.wz/2050000.img.xml 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 at redhat.com>
> wrote:
>
>> If possible, please send the rebalance logs as well.
>>
>>
>> On 16 July 2018 at 10:14, Nithya Balachandran <nbalacha at redhat.com>
>> wrote:
>>
>>> Hi Rusty,
>>>
>>> We need the following information:
>>>
>>> 1. The exact gluster version you are running
>>> 2. gluster volume info <volname>
>>> 3. gluster rebalance status
>>> 4. Information on the directory structure and file locations on your
>>> volume.
>>> 5. How many levels of directories
>>> 6. How many files and directories in each level
>>> 7. How many directories and files in total (a rough estimate)
>>> 8. 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,
>>> Nithya
>>>
>>>
>>> On 16 July 2018 at 06:13, Rusty Bower <rusty at rustybower.com> 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.
>>>>
>>>> Thanks
>>>> Rusty
>>>>
>>>> _______________________________________________
>>>> Gluster-users mailing list
>>>> Gluster-users at gluster.org
>>>> https://lists.gluster.org/mailman/listinfo/gluster-users
>>>>
>>>
>>>
>>
>
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