[Bug 244166] zfs zvol device name length limit too low
bugzilla-noreply at freebsd.org
bugzilla-noreply at freebsd.org
Sun Feb 16 14:31:43 UTC 2020
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=244166
Bug ID: 244166
Summary: zfs zvol device name length limit too low
Product: Base System
Version: 12.1-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: bugs at FreeBSD.org
Reporter: d8zNeCFG at aon.at
Scenario:
- zfs with zvols and snapshots similar to this (903 is only one of many
vdisks):
[0]# zfs list -r -t all hal.1/1/vdisks/903
NAME USED AVAIL REFER MOUNTPOINT
hal.1/1/vdisks/903 13.1G 654G 3.82G -
hal.1/1/vdisks/903 at backup.2019-09-01.12:09:19 1.42G - 3.80G -
hal.1/1/vdisks/903 at backup.2019-10-06.20:49:19 860M - 4.24G -
hal.1/1/vdisks/903 at backup.2019-11-03.17:14:12 177M - 3.76G -
hal.1/1/vdisks/903 at backup.2019-12-01.20:34:53 700M - 3.98G -
hal.1/1/vdisks/903 at backup.2020-01-05.17:56:48 796M - 3.86G -
hal.1/1/vdisks/903 at backup.2020-01-12.18:30:46 595M - 3.81G -
hal.1/1/vdisks/903 at backup.2020-01-19.19:04:27 65.0M - 3.82G -
hal.1/1/vdisks/903 at backup.2020-01-26.22:40:22 34.7M - 3.82G -
hal.1/1/vdisks/903 at backup.2020-02-02.18:17:01 33.2M - 3.82G -
hal.1/1/vdisks/903 at backup.2020-02-09.12:12:10 33.0M - 3.82G -
[0]#
- 903 partitioned as 903a, 903b, 903d
- backup up to another zfs under the subvolume ext.1/backup/zfssr, resulting in
[0]# zfs list -r -t all ext.1/backup/zfssr/hal.1/1/vdisks/903
NAME USED AVAIL
REFER MOUNTPOINT
ext.1/backup/zfssr/hal.1/1/vdisks/903 14.8G 103G
4.93G -
ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-10-06.20:49:19 1.33G -
5.36G -
ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-11-03.17:14:12 227M -
4.75G -
ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-12-01.20:34:53 880M -
5.02G -
ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-05.17:56:48 978M -
4.78G -
ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-12.18:30:46 819M -
4.81G -
ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-19.19:04:27 91.0M -
4.93G -
ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-26.22:40:22 50.8M -
4.93G -
ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-02.18:17:01 47.9M -
4.93G -
ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-09.12:12:10 0 -
4.93G -
[0]#
Result:
- When importing ext.1, there are many errors such as
[0]# grep 'Feb 16.*g_dev_taste.*903' /var/log/messages
Feb 16 15:21:13 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-12-01.20:34:53,
error=63)
Feb 16 15:21:13 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-26.22:40:22,
error=63)
Feb 16 15:21:13 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-02.18:17:01,
error=63)
Feb 16 15:21:14 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-10-06.20:49:19,
error=63)
Feb 16 15:21:14 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-19.19:04:27,
error=63)
Feb 16 15:21:14 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-11-03.17:14:12,
error=63)
Feb 16 15:21:14 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-09.12:12:10,
error=63)
Feb 16 15:21:14 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-12.18:30:46,
error=63)
Feb 16 15:21:14 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-05.17:56:48,
error=63)
Feb 16 15:21:25 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-12-01.20:34:53a,
error=63)
Feb 16 15:21:25 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-12-01.20:34:53b,
error=63)
Feb 16 15:21:25 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-12-01.20:34:53d,
error=63)
Feb 16 15:21:25 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-26.22:40:22a,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-26.22:40:22b,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-26.22:40:22d,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-02.18:17:01a,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-02.18:17:01b,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-02.18:17:01d,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-10-06.20:49:19a,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-10-06.20:49:19b,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-10-06.20:49:19d,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-19.19:04:27a,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-19.19:04:27b,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-19.19:04:27d,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-11-03.17:14:12a,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-11-03.17:14:12b,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2019-11-03.17:14:12d,
error=63)
Feb 16 15:21:26 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-09.12:12:10a,
error=63)
Feb 16 15:21:27 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-09.12:12:10b,
error=63)
Feb 16 15:21:27 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-02-09.12:12:10d,
error=63)
Feb 16 15:21:27 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-12.18:30:46a,
error=63)
Feb 16 15:21:27 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-12.18:30:46b,
error=63)
Feb 16 15:21:27 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-12.18:30:46d,
error=63)
Feb 16 15:21:27 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-05.17:56:48a,
error=63)
Feb 16 15:21:27 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-05.17:56:48b,
error=63)
Feb 16 15:21:27 hal kernel: g_dev_taste: make_dev_p() failed
(gp->name=zvol/ext.1/backup/zfssr/hal.1/1/vdisks/903 at backup.2020-01-05.17:56:48d,
error=63)
[0]#
This seems to be caused by the path length of device files being limited to 63
characters.
Would it be possible to increase this limit, or get rid of it altogether?
-- Martin
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