Commit Graph

13 Commits

Author SHA1 Message Date
Dominik Csapak c1feb447e8 tape: changer: sg_pt: fix typo
ok, since its a private struct

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
2021-07-21 17:02:16 +02:00
Dominik Csapak 62a0e190cb tape: changer: sg_pt: add SCSI_VOLUME_TAG_LEN const
so that we do have less 'magic' constants without description

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
2021-07-21 17:01:37 +02:00
Dominik Csapak 6c053ffc89 tape: changer: sg_pt: make extra scsi request for dvcid
some libraries cannot handle a request with volume tags and DVCID set at
the same time.

So we make 2 separate requests and merge them, since we want to keep
the vendor/model/serial data.

to not overcomplicate the code, add another special type to ElementType

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
2021-07-16 08:46:06 +02:00
Dietmar Maurer 9ee4c23833 tape: changer: sg_pt: always retry until timeout 2021-07-13 10:39:28 +02:00
Dominik Csapak 0ed40b19c7 tape: changer: sg_pt: query element types separately
Some changers do not like the DVCID bit when querying non-drives,
this includes when querying 'all' elements.

To circumvent this, we query each type by itself (like mtx does it),
and only add the DVCID bit for drives (Data Transfer Elements).

Reported by a user in the forum:
https://forum.proxmox.com/threads/ibm-3584-ts3500-support.92291/

and limit to 1000 elements per request.
(Because some changers limit that request with the options we set)

instead of checking if the data len was equal to the allocation_len
for getting more data, we count the returned elements and compare
that with the number we requested

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Signed-off-by: Dietmar Maurer <dietmar@proxmox.com>
2021-07-12 18:19:26 +02:00
Dominik Csapak 71e83e1b1f tape/changer/sg_pt_changer: read whole descriptor size for each entry
Some changer seem to append more data than we expect, but correctly
annotates that size in the subheader.

For each descriptor entry, read as much as the size given in the
subheader (or until the end of the reader), else our position in
the reader is wrong for the next entry, and we will parse
incorrect data.

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
2021-04-21 14:07:41 +02:00
Dietmar Maurer cf1e117fc7 sgutils2: use enum for ScsiError
This avoids string allocation when we return SenseInfo.
2021-03-27 15:57:48 +01:00
Thomas Lamprecht d1d74c4367 typo fixes all over the place
found and semi-manually replaced by using:
 codespell -L mut -L crate -i 3 -w

Mostly in comments, but also email notification and two occurrences
of misspelled  'reserved' struct member, which where not used and
cargo build did not complain about the change, soo ...

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
2021-03-10 16:39:57 +01:00
Dominik Csapak 4be4736603 tape/changer: refactor marking of import/export slots from config
we did this for 'mtx', but missed it for the sg_pt_changer code
refactor it into the MtxStatus strut, and call it from both
code paths

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
2021-01-28 15:10:55 +01:00
Dominik Csapak 2da7aca8e8 tape/changer: add vendor/model to DriveStatus
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
2021-01-28 15:10:31 +01:00
Dietmar Maurer 16b4d78400 tape: rename retry_command to execute_scsi_command, make retry a flag 2021-01-27 09:34:24 +01:00
Dietmar Maurer ec8d9c6b80 tape: repeat changer scsi command until successful 2021-01-27 08:59:10 +01:00
Dietmar Maurer 697c41c584 tape: add/use rust scsi changer implementation using libsgutil2 2021-01-25 13:14:07 +01:00